Iolite
India, Madagascar · 4 specimens · 8.4ct avg






Iolite is known for its striking violet-blue color, which can exhibit pleochroism, showing different hues when viewed from different angles. It has a hardness of 7 to 7.5 on the Mohs scale, making it suitable for various types of jewelry, and is commonly cut into oval and cushion shapes to enhance its color.
Price History
Quality Tiers
Listings
Specimen Data
Value Drivers
In the Iolite market, larger stones tend to command higher prices, with the mean price per carat reaching $12. However, the price can vary significantly, as evidenced by the P10–P90 spread of $3 to $28 per carat.
The most desirable Iolite displays a deep, rich violet-blue color, akin to that of tanzanite. Stones that are lighter or exhibit brownish hues tend to be less valuable.
Iolite is generally valued for its clarity, with eye-clean stones fetching higher prices. While some inclusions may be tolerated, clarity significantly influences market value.
The cut of an Iolite can enhance its color and brilliance, with well-proportioned cuts like oval or cushion shapes being preferred. Poorly executed cuts can diminish the stone's appeal and value.
Market Dynamics
Iolite is primarily sourced from India, which dominates the market with eight listings, while Brazil contributes a smaller share. This concentration in origin may affect availability and pricing in the future.
Demand for Iolite is driven by its unique color and affordability compared to other gemstones, appealing to both collectors and jewelry designers. Its use in bespoke jewelry pieces is also increasing as consumers seek distinctive options.
Recent news indicates potential tariff impacts on colored gemstones, which could affect pricing and availability in the U.S. market. As the industry adjusts to these changes, collectors may see fluctuations in Iolite prices.
News
Insights
The median price per carat for Iolite is currently $8, indicating a generally accessible price point for collectors.
The top price for Iolite can reach $28 per carat, particularly for larger, high-quality stones.
India remains the leading source of Iolite, contributing significantly to the market's overall supply.
Recent tariff discussions could lead to increased costs for importing Iolite, potentially impacting future pricing.
Because it can cleave and is somewhat brittle, settings should protect exposed corners and edges in rings.
Transparent iolite may occasionally show cat's-eye effects when fibrous inclusions are present, but such stones are rare collector items.
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