Gem and Mineral Information

Gem and Mineral Information:  

Anniversary Gifts
Anisotropism
Birefringence
Birthstones
Chemistry
Clarity
Cleavage
Color
Country of Origin
Crystallography
Crystal Habit (shapes)
Density
Diamagnetic Gems
Dimorphous
Dispersion
Enhancements
Fluorescent Gems
Fracture
 

Hardness
Luminescence
Luster
Magnetic Gems
Metallic Gems
Mineral Classifications
Mineral Groups
Optical Illusion
Paramagnetic Gems
Periodic Table
Photochromic Gems
Piezoelectric Gems
Pleochroism
Poisonous Gems
Polymorphous
Pseudomorph
Pyroelectric Gems
Radioactive Gems
 

Rare Earth Elements (REE) Gems
Refractive Index
Shapes of Gemstones
Specific Gravity (Density)
Strunz Classifications
Tenacity (toughness)
Tenebrescent Gems
Transparency
Triboluminescent Gems
Trimorphous
Twinning
Unit Conversion (mm)
Unusual Gem Categories
USA Gemstones
US State Gemstones
Water Soluble Gems
Zodiac Gemstones