Medina natural beryllium necklace limited edition 1 of 1300 pieces, Gemporia certificate of authenticity. Proof mark and placement: On the inside of the ring TGGC 925 Gemstones: Natural beryl 100 beryl weighing 44,000 ct, size4x4 mm 50 beryl weighing 187,000 ct, size8x8 mm Extras: Certificate of Authenticity Condition: new NOTE: Item may vary slightly in color due to light exposure of the stone.