All About Gemstones | Gemology

This section of All About Gemstones is designed to provide a detailed overview on the subject of basic gemology, crystal formation, crystal growth habits, geology, and the geography associated with gemstone occurrences.

We have also included sections on gemstone grading and analysis, mining technologies, gem mine locations, and other peripheral information related to gemology and gemological evaluation.

Gemology Gem Chemistry & Properties Color in Gemstones and Minerals Refractive Index of Gemstones Mohs Hardness Scale Crystalline Structures & The Crystal System Crystal Habits - Crystal Growth Patterns Crystal Forms The Rock Cycle Mineral Classification - Gems by Mineral Class Gemstone Enhancements & Treatments Ruby Heat-Treating, Fracture-Filling, and Flux-Healing Gemology Extraction Diamond Mining Technology Diamond Geology & Kimberlites Worldwide Diamond Mines & Mining History Gemology & Gem Cutting AGS Diamond Grading Report Fancy Gem Cuts & Fantasy Cuts Patented Signature Diamond Cuts Old European Diamond Cuts Gemology & Lapidary Equipment Gemological Testing Equipment Gem Cutting Technology, Equipment & Techniques Ultrasonic Cleaners, Steam Cleaning & Polishing Cloths Gem Grading Colored Gemstone Grading Certificates & Reports AGS Diamond Grading Report Sapphire Enhancements & Synthetic Sapphire Terminology Glossary - Gemology