Gemstones auctions
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural Diamond 0.29 ct, Clarity Si1, Gross price: approx. 13,000 PLN Net price: $2,800 USD Gross price: $3,444 USD Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
Natural diamond.The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code.Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society.The diamond can serve as an inves...
0.15 ct Natural Diamond P1 The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish ...
Natural Fancy Color Diamond, 0.37 ct, Si1. Gross price: $5,043 USD Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond ...
Natural Diamond 0.32 ct, Clarity Si2, Gross price: approx. 15,000 PLN Net price: $3,750 USD Gross price: $4,623 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
Natural Brilliant-Cut Diamond, as much as 2.32 ct, IGI Certificate Natural diamond. The diamond comes with an IGI (International Gemological Institute) certificate. IGI is the world’s largest independent gemological institution, specializing in the certification of diamonds, gemstones, and jewelry. The diamond can serve as an investment or be set in a ring, which will significantly increase ...
A 0.23 ct natural, colored diamond with a clarity grade of P1. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a renowned expert on colored gemstones, a highly regarded diamond appraiser, and serves as S...
Natural Diamond 0.28 ct, Clarity Si1, Gross price: approx. 12,500 PLN Net price: $2,700 USD Gross price: $3,321 USD Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
Natural Diamond 0.25 ct, Very High Clarity (VVS1). Gross price: approx. 15,300 PLN Net price: $3,300 USD Gross price: $4,059 USD Natural diamond with a fancy color (valued higher than colorless diamonds) The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expe...
Natural Diamond 0.65 ct P3, gross price: approx. 6,500 PLN Diamond Type: 100% Natural Certificate: Diamond Sky, Jan Karaszkiewicz (Secretary of the Polish Gemmological Society) The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gems...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural Diamond 0.28 ct, Very High Clarity (VVS1). Gross price: approx. 13,500 PLN Net price: $2,900 USD Gross price: $3,567 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regar...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural spinel.The spinel comes with a certificate from an appraiser of the Polish Gemmological Society—Diamond Sky + Catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. Spinel specifications: Weight: 0.95 CT Shape: round fancy Color: light purp...
Natural Diamond 0.28 ct, Clarity Si1, Gross price: approx. 12,500 PLN Net price: $2,700 USD Gross price: $3,321 USD Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
A 0.27 ct natural diamond with a clarity grade of P1. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secre...
Natural Fancy Color Diamond 0.32 CT P1 Gross Price: $3,444 USD Natural diamond. The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of ...
Natural diamond.The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code.Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society.The diamond can serve as an inves...
Natural Fancy Color Diamond, 0.31 ct, P1 Gross price: approx. 11,000 PLN Net price: $2,350 USD Gross price: $2,891 USD Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished exp...
NATURAL DIAMOND 0.51 ct P2 gross price: $2,214 USD Diamond Type: 100% Natural. Certificate: Diamond Sky, Jan Karaszkiewicz (Secretary of the Polish Gemmological Society) The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky has been operating on the Polish market for 30 years; plus a catalog photo with a QR code. Jan Karaszkiewicz is a distingui...
Natural spinel, 0.81 ct The spinel comes with a certificate from an appraiser of the Polish Gemmological Society—Diamond Sky, a company that has been operating on the Polish market for 30 years + Catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Societ...
Natural Spinel 1.00 ct The spinel comes with a certificate from an appraiser of the Polish Gemmological Society—Diamond Sky, a company that has been operating on the Polish market for 30 years + Catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society...
Natural Diamond 0.29 ct, Clarity Si1, Gross price: approx. 13,000 PLN Net price: 2,800 USD Gross price: $3,444 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond ap...
Natural Diamond 0.30 ct, Clarity P1, Gross price: approx. 10,200 PLN Net price: 2,200 USD Gross price: $2,706 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond app...
Natural Diamond 0.35 ct, Clarity P1, Gross price: approx. 11,500 PLN Net price: $2,500 USD Gross price: $3,075 USD Natural fancy-colored diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond apprais...
0.25 Fancy Color Natural Diamond, Si1 Net price: $1,860 USD Gross price: $2,288 USD Natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a renowned expert on colored gemstones, a highly regar...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural Diamond 0.18 CT P1 GROSS PRICE: $947 USD The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones and a highly regarded diamond appraiser; he serves as Secretary General of the Polish Gemmological Society and is a member of HRD A...
Natural Fancy Color Diamond 0.30 CT P1 Gross Appraised Value: $3,247 USD The diamond comes with a certificate from an appraiser and secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish ...
Natural Fancy Color Diamond, 0.29 ct, P2; Gross Price: $1,538 USD Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
Natural Diamond 0.26 ct, Clarity Si2, Gross price: approx. 10,700 PLN Net price: $2,300 USD Gross price: $2,829 USD Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond a...
Natural Diamond 0.26 ct, Clarity P1, Gross price: approx. 10,700 PLN Net price: $2,300 USD Gross price: $2,829 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond ap...
Natural Diamond 0.24 ct, Very High Clarity (VVS1). Gross price: approx. 13,000 PLN Net price: $2,800 USD Gross price: $3,444 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regar...
Natural Diamond 0.21 ct, Very Very Slightly Included (VVS) Clarity. Gross price: approx. 6,500 PLN
301 EUR
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural diamond, 0.26 ct, Si1. Gross price: $2,829 USD Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a renowned expert on colored gemstones, a highly regarded diamond appraiser, and se...
Natural diamond.The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code.Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society.The diamond can serve as an inves...
Natural diamond. The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. The diamond can serve as an in...
NATURAL Spinel 0.84 ct The spinel comes with a Certificate from an Appraiser of the Polish Gemmological Society—Diamond Sky—plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. Spinel specifications: Weight: 0.84 CT Dimensions: 6.07 x 5....
0.11 ct Si2 Natural Diamond The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky has been operating on the Polish market for 30 years, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. A d...
Natural diamond 0.22 ct P1 Gross price: $1,353 USD Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a leading expert on colored gemstones, a highly regarded diamond appraiser, and serves ...
Natural Diamond 0.25 ct, Clarity Si2, Gross price: approx. 6,500 PLN Net price: $1,400 USD Gross price: $1,722 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond ap...
Natural Diamond 0.25 ct, Clarity P1, Gross price: approx. 5,700 PLN Net price: $1,200 USD Gross price: $1,476 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, an...
Natural Diamond 0.26 ct, Clarity P1, Gross price: approx. 7,300 PLN Net price: 1,550 USD Gross price: $1,907 Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraise...
0.21 ct Fancy Color natural diamond, clarity P1 Gross price: $1,329 USD The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. Th...
Diamond Type: 100% Natural Certificate: Diamond Sky, Jan Karaszkiewicz (Secretary of the Polish Gemmological Society) The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones and a highly regarded diamond appraiser; he serves as...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural diamond. The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. The diamond can serve as an in...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
A 0.30 ct natural diamond with Si2 clarity. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary Gener...
Natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. The diamond can serve as an investment or be set in a ring, which w...
Diamond Type: 100% Natural. Certificate: Diamond Sky, Jan Karaszkiewicz (Secretary of the Polish Gemmological Society) The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky has been operating on the Polish market for 30 years, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded...
Natural diamond. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society; Diamond Sky, a company that has been operating on the Polish market for 30 years, provides a catalog photo along with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmologic...
Natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky has been in business for 30 years + a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. The diamond can serve as an investmen...
0.22 ct Si1 natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society; Diamond Sky has been operating on the Polish market for 30 years + a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. A diam...
Natural Diamond 0.22 CT Si2 Gross Price: $1,845 USD Natural diamond. The diamond comes with a certificate from an appraiser and the Secretary of the Polish Gemmological Society, Diamond Sky, Jan Karaszkiewicz, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish ...
Natural Diamond 0.25 ct, Clarity P1, Gross price: approx. 7,000 PLN Net price: $1,500 USD Gross price: $1,845 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond app...
Natural Diamond 0.27 ct, Clarity P1, Gross price: approx. 7,500 PLN Net price: $1,600 USD Gross price: $1,968 USD Fluorescence: strong yellow (highly lustrous) Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on co...
Natural Diamond 0.34 ct, Clarity P1, Gross price: approx. 6,400 PLN Natural Diamond 0.34 ct, Clarity P1, Gross price: approx. 6,400 PLN Net price: $1,360 USD Gross price: $1,673 USD Natural diamond with a fancy color. The diamond comes with a Certificate from an Appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a dist...
0.24 ct natural Fancy Color diamond, VVS clarity (the highest grade after IF—completely free of any flaws). The VVS (Very, Very Slightly Included) clarity grade means that the diamond has microscopic internal inclusions that are extremely difficult to detect even for a specialist under 10x magnification, and completely invisible to the naked eye. Gross price: $3,272 USD Natural diamond with ...
Natural Diamond 0.36 ct, Clarity P1, Gross price: approx. 16,000 PLN Net price: $3,400 USD Gross price: $4,182 USD Natural diamond with a fancy color. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond ap...
Natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society. The diamond can serve as an investment or be set in a ring, which will significantly increase its value. Diamond specifications: Weight: 0.20 CT Clarity: P1 Dimensions: 3.18 x 3.18 x 2.01 mm Shape: cushion Color: intense fancy brown-yellow Prices for fancy-color diamonds show a strong, l...
Natural diamond. The diamond comes with a certificate from an appraiser of the Polish Gemmological Society, issued by Diamond Sky, plus a catalog photo with a QR code. Jan Karaszkiewicz is a distinguished expert on colored gemstones, a highly regarded diamond appraiser, and serves as Secretary General of the Polish Gemmological Society. The diamond can serve as an investment or be set in a rin...