BARADAK GEM GUIDE
Price of Iolite per carat
BARADAK separates lot acquisition, dealer market and public retail asking. Valuation depends on variety, origin, treatment, quality, weight and cut.
Analyze this gemstoneMohs7–7.5
MineralCordierite
RI1.542–1.551
SG2.61
What drives value
vivid violet-blue colorproper orientationclaritycut
Buyer intelligence
The best stones show vivid violet-to-blue. Strong pleochroism means cutting orientation is critical; grayish material is more commercial.
Care
Generally wearable; protect from hard impacts. Warm soapy water is a conservative cleaning method.
BARADAK uses summarized gemological information and links to technical sources; commercial ranges do not replace a laboratory report or formal appraisal.
GIA Gem Encyclopedia →