Distinguishing Diamonds: Educating Your Eyes
Distinguishing diamonds from their lookalikes requires educated eyes. Learn what visual features to look for and the properties of many popular…
Distinguishing diamonds from their lookalikes requires educated eyes. Learn what visual features to look for and the properties of many popular…
Rare and difficult to cut, anhydrite is seldom faceted. However, this material can be carved into beautiful objects. “Angelite”,蓝灰色……
Learn how to determine a gem’s optic character with a refractometer and identify optical effects you may encounter during gem identification…
2月16日, 2022 TUCSON — After a cancellation in 2021, the Tucson Gem Show returned to Arizona from February 10-13, 2022. ,提出了…
更广为人知的是稀有夹杂物 绿宝石, parisite crystals are usually small and seldom faceted.