Fine Jewels And Jadeite December 2020
拍品 2878:
Centering upon a marquise-cut alexandrite weighing 2.99 carats, embellished by the oval-cut diamond surround and scalloped by pavé-set brilliant-cut diamonds, extending to the diamond-set reverse and bifurcated half-hoop, mounted in platinum, diamonds weighing approximately 3.70 carats in total, ring size 6¼
Accompanied by a report from the Gübelin Gem Lab, stating that the 2.99 carat natural alexandrite shows color-change in different lights: from bluish-green in daylight to purple in incandescent light, originates from Brazil and has no indications of treatment, report no. 20021063, dated 20th February 2020
Alexandrite undoubtedly stands out as one of the rarer and intriguing gemstones on the gemological scale. The first-ever recorded alexandrite was excavated in the Ural Mountains, Russia during the early 1830s. While the Russian material holds the historic significance, the more recent discovered deposits in Minas Gerais, Brazil is not to be undermined. Most of the fine alexandrites with distinct color changing property and high clarity in today’s market come from Brazil. The finest alexandrites are habitually refer to as “emerald by day, ruby by night” due to its unique optical phenomenon to display greenish blue color in daylight and warm red shade in candlelight. To further contribute to its rarity, gem quality alexandrites are scarcely found in only a few localities in the world with inconsistent supply, while some mines are believed to be nearly or completely depleted.
2.99克拉馬眼形切磨天然變色巴西亞力山大戒指，配以小鑽，鑲鉑金，鑽石共重約3.70克拉，戒指 尺寸 6¼，附Gübelin證書
US$48,000 – 73,000
