Gemstone Search

Search gemstones by optical and physical properties

Please wait...
Optical Properties
Refractive Index:   to  
Birefringence:   to  
Optical Character:
Isotropic
Uniaxial
 Biaxial
Optical Sign:
+
 -
Transparency:
Transparent
Translucent
 Opaque
Lustre:
Adamantine
Subadamantine
Vitreous
Waxy
Silky
Resinous
 Pearly
Greasy
Dull
Metallic
Submetallic
Physical Properties
Specific Gravity:   to  
Hardness:   to  
Colour
Colour:
Chelsea Filter:
Fluorescence
Long Wave UV:
Short Wave UV:
Phosphorescence:
Triboluminescence:
Thermoluminescence:
Other Properties
Crystal System:
Isometric
Hexagonal
Trigonal
Tetragonal
Orthorhombic
 Monoclinic
Triclinic
Icosahedral
Amorphous
Inclusions:
Gemdat.org Gemstone Search
Use the options to the left to search for gemstones based on properties.

The form will update automatically as you select options.

Once you have a list of matches you can continue to refine the list with the options on the left. Move your mouse over a photo thumbnail to bring up the details about the photo.

 
Copyright © Jolyon & Katya Ralph 1993-2025. Site Map. Photographs are copyright of the individuals who submitted them. For more information please contact the . Gemdat.org is an online information resource dedicated to providing free gemmological information to all.