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Gemstone Encyclopedia
Sunstone: The Gem of Optical Adventures and Inc...
Deep dive into sunstone inclusions: how copper, hematite, and goethite produce the gem's sparkling aventurescence. Expert guide on identification, grading, and care for this luminous feldspar gemstone.
Sunstone: The Gem of Optical Adventures and Inc...
Deep dive into sunstone inclusions: how copper, hematite, and goethite produce the gem's sparkling aventurescence. Expert guide on identification, grading, and care for this luminous feldspar gemstone.
Unique Star Effects in Star Ruby: The Science o...
Learn how star ruby's star effect (asterism) is created by oriented rutile inclusions in corundum. Expert guide on crystal structure, geological formation, identification, and value of natural star rubies.
Unique Star Effects in Star Ruby: The Science o...
Learn how star ruby's star effect (asterism) is created by oriented rutile inclusions in corundum. Expert guide on crystal structure, geological formation, identification, and value of natural star rubies.
The Allure of Sunstone: A Gemologist’s Guide to...
Explore the unique optical phenomenon of aventurescence in sunstone. Learn about its copper platelets, crystal structure, differences from labradorite and moonstone, and expert tips for identification and care.
The Allure of Sunstone: A Gemologist’s Guide to...
Explore the unique optical phenomenon of aventurescence in sunstone. Learn about its copper platelets, crystal structure, differences from labradorite and moonstone, and expert tips for identification and care.
The Science of Alexandrite: Crystal Structure, ...
Dive into the science of alexandrite: its orthorhombic crystal system, Mohs 8.5 hardness, 1.746-1.755 RI, geological formation in pegmatites, and the chromium-triggered color change. Expert gemology insights.
The Science of Alexandrite: Crystal Structure, ...
Dive into the science of alexandrite: its orthorhombic crystal system, Mohs 8.5 hardness, 1.746-1.755 RI, geological formation in pegmatites, and the chromium-triggered color change. Expert gemology insights.
Pietersite: The Tempest Stone – Identification ...
Discover how to identify genuine pietersite and spot fakes or treatments. Expert guide on color patterns, chatoyancy, lab tests, and buying tips for the rare 'Tempest Stone'.
Pietersite: The Tempest Stone – Identification ...
Discover how to identify genuine pietersite and spot fakes or treatments. Expert guide on color patterns, chatoyancy, lab tests, and buying tips for the rare 'Tempest Stone'.
Pietersite: The Tempest Stone – Science, Format...
Explore the gemology of Pietersite, the storm chalcedony. Learn about its formation, fibrous inclusions, chatoyancy, hardness, refractive index, and how to identify real vs. fake stones. In-depth scientific analysis for...
Pietersite: The Tempest Stone – Science, Format...
Explore the gemology of Pietersite, the storm chalcedony. Learn about its formation, fibrous inclusions, chatoyancy, hardness, refractive index, and how to identify real vs. fake stones. In-depth scientific analysis for...