Lapis Lazuli Description
Lapis lazuli is a rock, which means it’s an aggregate of several minerals. This ancient gem contains three minerals in varying amounts: lazurite, calcite, and pyrite. Sometimes, it also contains one or more of the following: diopside, amphibole, feldspar, and mica.

橄榄石品质要素

图森实习班
在美丽而富有历史意义的环境中提升技能。实习班在位于亚利桑那州图森市中心的 Alfie Norville Gem and Mineral Museum(阿尔菲·诺维尔宝石和矿物博物馆)开设。

Turquoise Description
Turquoise might lack the sparkle and clarity of transparent colored gemstones like ruby, emerald, and sapphire, but its multi-layered history and soul-satisfying color make it a desirable gem. Its color can range from dull greens to grass greens to a bright, medium-toned, sky blue

Opal Quality Factors
Individual opals are as diverse as snowflakes or fingerprints and can vary widely in appearance and quality. Learn about the factors that make opals so desirable!



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