UNMOUNTED EMERALD 1.57克拉天然「哥倫比亞」祖母綠 Certificate: GRS, emerald, 1.57ct, natural, pastel green, Colombian, insignificant (GRS2022-069068, 22 June 20...

GROUP OF UNMOUNTED MULTICOLOURED SPINELS Multicoloured spinels: 79pcs, approx. 31.48cts, from 0.26 to 0.55ct Footnotes: NO RESERVE 不設底價 Lot to b...

UNMOUNTED COLOURCHANGE COBALT BLUE SPINEL 3.58克拉天然未經加熱處理變色鈷藍色尖晶石 Certificates: GIA, spinel, 3.58cts, natural, blue changing to violet, unheated (5...

UNMOUNTED COBALT BLUE SPINEL 2.24克拉天然未經加熱處理鈷藍色尖晶石 Certificates: GIA, cobalt spinel, 2.24cts, natural, blue, unheated (6491731011, 27 June 2024) Ze...

UNMOUNTED COLOURCHANGE COBALT SPINEL 3.80克拉天然「坦桑尼亞」未經處理變色鈷藍紫色尖晶石 Certificate: Bellerophon, cobalt spinel, 3.803cts, natural, Tanzanian Mahenge, co...

UNMOUNTED COLOURCHANGE SAPPHIRE 5.07克拉天然「馬達加斯加」未經加熱處理橙棕色變色剛玉 Certificates: Bellerophon, sapphire, 5.068cts, natural, orangy brown, Madagascan (Il...

UNMOUNTED PINK-PURPLE SAPPHIRE 3.26天然未經加熱處理粉紅紫色剛玉 Certificate: GIA, sapphire, 3.26cts, pink-purple, unheated (7498731017, 1 July 2024) For further...