没有保留价 黄色 黄宝石 - 29.56 ct - 国际有色宝石协会（ICA GemLab） - 未处理 - 棋盘格

Beautiful natural gemstone, Perfect for collectors, Jewelry makers, or anyone looking for something special.

Species : Natural Topaz

Variety : Yellow Topaz

Shape and Cutting Style : Fancy Checkerboard Oval

Weight : 29.56 CARAT

Measurements : 20.05 x 15.90 x 12.47 mm

Color : Yellow

Treatment : Untreated

Transparency : Transparent

Characteristics : Topaz naturally spans colorless, brown, yellow, pink, and more rarely red or violet; blue topaz is often produced by irradiation and heat treatments. Fluorine and aluminum form its fundamental structure, granting a Mohs hardness of 8 with perfect basal cleavage. Fine-quality transparent stones can display remarkable brilliance when skillfully cut. Pink and red topaz varieties are particularly prized for their rarity. One of the ‘big gems’ historically, topaz endures as a versatile choice for any jewelry style.

Comments : Topaz is commonly heated to improve or change the color. Color authenticity is currently undeterminable.

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