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Neon pink Mahenge spinel in oval cut 6.06 ct, Tanzania photo

Neon pink Mahenge spinel in oval cut 6.06 ct, Tanzania

Pair of untreated rubies in pear cut 5.03 carats from Mozambique photo

Pair of untreated rubies in pear cut 5.03 carats from Mozambique

Lavender purple spinel in heart shape 4.41 ct, Tanzania photo

Lavender purple spinel in heart shape 4.41 ct, Tanzania

Unheated padparadscha sapphire from Sri Lanka in oval cut 4.63 carats photo

Unheated padparadscha sapphire from Sri Lanka in oval cut 4.63 carats

Neon red Mahenge spinel 4.03 ct, Lotus photo

Neon red Mahenge spinel 4.03 ct, Lotus

Pair of vibrant pink Mahenge spinels in cushion cut 4.12 carats, Tanzania photo

Pair of vibrant pink Mahenge spinels in cushion cut 4.12 carats, Tanzania

Cornflower blue sapphire 2.11 ct in oval cut, Sri Lanka photo

Cornflower blue sapphire 2.11 ct in oval cut, Sri Lanka

Pair of vivid red-orange rubellites in cushion cut 9.53 carats, Africa photo

Pair of vivid red-orange rubellites in cushion cut 9.53 carats, Africa

Aquamarine from Africa, radiant cut, 6.29 carats photo

Aquamarine from Africa, radiant cut, 6.29 carats

Vivid orange Fanta color octagon cut sapphire 11.46 ct, Sri Lanka photo

Vivid orange Fanta color octagon cut sapphire 11.46 ct, Sri Lanka

Rare alexandrite in oval cut with strong color change effect 4.05 ct, Sri Lanka photo

Rare alexandrite in oval cut with strong color change effect 4.05 ct, Sri Lanka

Dark gray cushion-cut spinel 2.37 carats, Burma photo

Dark gray cushion-cut spinel 2.37 carats, Burma

Yellow sapphire in oval cut 2.25 ct from Madagascar photo

Yellow sapphire in oval cut 2.25 ct from Madagascar

Cobalt blue spinel 1.47 ct in octagon cut from Tanzania photo

Cobalt blue spinel 1.47 ct in octagon cut from Tanzania

Royal Blue pear cut sapphire 5.31 carats, Sri Lanka photo

Royal Blue pear cut sapphire 5.31 carats, Sri Lanka

Golden yellow radiant-cut sapphire 4.35 ct, Sri Lanka photo

Golden yellow radiant-cut sapphire 4.35 ct, Sri Lanka

Cornflower blue sapphire 3.50 carats in cushion cut, Sri Lanka photo

Cornflower blue sapphire 3.50 carats in cushion cut, Sri Lanka

Cornflower blue sapphire in oval cut 11.54 ct, Sri Lanka photo

Cornflower blue sapphire in oval cut 11.54 ct, Sri Lanka