Fluorite Faceting Information
Faceting Information such as reviews, guide, tips and tricks. Choose what best fits the criteria for Fluorite gemstones together with helpful details.
Fluorite Faceting Information
Color: Colorless, yellow, green, blue, pink, purple, red and orange
Moh's Hardness: 4
Refractive Index: 1.434
Critical Angle: 44.37°
Specific Gravity: 3.18
Cleavage: Perfect in 4 directions
Fracture: Even to conchoidal, brittle
Dispersion: .007
Heat Sensitivity: High, in my experience
Birefringence (double refraction): None
Crystal Structure: Isometric
Treatments: Generally none, sometimes can be irradiated.
What I prefer to polishing with: Flourite is not something I cut, recommended polishes are wax lap with Alumina or tin oxide or chrome oxide Ultralap. Orient the table about 10 degrees off the crystal face to reduce cleavage problems.
Jeff's Comments: Cuts pretty easily, and can be a tough to polish. Watch the heat when dopping… Typically has silk and cleavage problems
Design Notes: About any designs will work well.
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
Related Articles
Bytownite Faceting Information
Emerald Facet / Faceting Information
Opal Faceting Information
Kunzite (Spodumene) Faceting Information
Latest Articles
Precision Faceting a Story Gemstone: Choosing Rough
32 Green Gemstones (How Many Do You Know?)
A Guide to Antique Georgian Jewelry
Hambergite Value, Price, and Jewelry Information
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!