Labradorite
Labradorite is a feldspar mineral famous for its iridescent optical phenomenon — labradorescence — where light reflects off internal twinning planes to produce brilliant blue, green, gold, and orange colors. The Oregon Sunstone is a closely related feldspar with copper inclusions that creates a golden to red schiller effect, and can be collected for free on BLM land in Lake County, Oregon.
Physical Properties
Chemical Formula
(Ca,Na)(Al,Si)₄O₈
Hardness (Mohs)
6–6.5
Color
Dark gray with iridescent blue, green, gold, orange (labradorescence)
Luster
Vitreous to pearly
Crystal System
Triclinic
Streak
White
Cleavage
Perfect in two directions
Specific Gravity
2.69–2.72
🔍 Field Identification Tips
The iridescent color flash (labradorescence) when you tilt the stone is unmistakable. Without the color play it looks like a dull gray rock. Two perfect cleavage directions at nearly right angles. Hardness 6–6.5. Distinguished from moonstone (similar play of light, but softer, milky white base color).
Varieties & Forms
📍 Where to Find Labradorite in the US
Uses & Applications
Jewelry, decorative carvings, countertops (in granite form), architectural stone.
💰 Collector Value Guide
Common tumbled: $2–$20. Quality cabochon rough: $10–$100/lb. Spectrolite (Finnish): $50–$500/piece. Oregon Sunstone: $5–$500/stone.
Find Labradorite With Our Tools
Use the We Lick Rocks app to identify specimens, find dig sites, and connect with local rockhounds.