Search Gemstone Knowledge
Gemstone Science
How Crystal Chemistry Controls Color in Gadolin...
How dopant ions, site geometry, and crystal-field splitting control color in gadolinium gallium garnet, a synthetic garnet used as a diamond simulant.
How Crystal Chemistry Controls Color in Gadolin...
How dopant ions, site geometry, and crystal-field splitting control color in gadolinium gallium garnet, a synthetic garnet used as a diamond simulant.
Why Mother of Pearl Is Not a Crystal: The Brick...
Why mother of pearl is a layered biogenic composite, not a crystal. Explore nacre's aragonite architecture, structural color, toughness, and analytical limits.
Why Mother of Pearl Is Not a Crystal: The Brick...
Why mother of pearl is a layered biogenic composite, not a crystal. Explore nacre's aragonite architecture, structural color, toughness, and analytical limits.
Chalcedony, Flame Fusion, and Flux Growth: When...
Explore why flame fusion, flux growth, and hydrothermal synthesis yield single crystals, not the microcrystalline aggregate that defines chalcedony. Understand the structural distinction between quartz and chalcedony.
Chalcedony, Flame Fusion, and Flux Growth: When...
Explore why flame fusion, flux growth, and hydrothermal synthesis yield single crystals, not the microcrystalline aggregate that defines chalcedony. Understand the structural distinction between quartz and chalcedony.
Reading Growth Zoning in Turquoise: What Field ...
How growth zoning in turquoise is interpreted across field texture, microscopic aggregate patterns, and laboratory analysis, and why these scales can disagree.
Reading Growth Zoning in Turquoise: What Field ...
How growth zoning in turquoise is interpreted across field texture, microscopic aggregate patterns, and laboratory analysis, and why these scales can disagree.
Why Two Laboratories Can Identify the Same Suns...
Sunstone identification can differ between labs due to feldspar solid solution, copper inclusion variability, treatment detection limits, and reference collection differences. Learn how gemologists interpret conflicting evidence.
Why Two Laboratories Can Identify the Same Suns...
Sunstone identification can differ between labs due to feldspar solid solution, copper inclusion variability, treatment detection limits, and reference collection differences. Learn how gemologists interpret conflicting evidence.
Chrysocolla Durability: Why Hardness and Toughn...
Why chrysocolla can be soft yet crack-resistant: hardness, toughness, cleavage, porosity, silicification, and dehydration in a hydrous copper silicate.
Chrysocolla Durability: Why Hardness and Toughn...
Why chrysocolla can be soft yet crack-resistant: hardness, toughness, cleavage, porosity, silicification, and dehydration in a hydrous copper silicate.