Raw Green Kyanite Value Guide

These raw Green Kyanite specimens from Brazil are highly collectible due to their rare sea-green coloration, which is caused by trace amounts of chromium. Unlike the more common blue variety, these bladed crystal structures represent a unique polymorphic aluminosilicate sought after by both mineralogists and metaphysical collectors.

What Is Raw Green Kyanite Worth?

The typical price range for Raw Green Kyanite is $15 - $20 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• The intensity and saturation of the chromium-driven green color significantly impacts the $15-$20 price point.
• The structural integrity and length of the bladed crystals, as kyanite is prone to splintering.
• The overall size and weight of the raw specimen sourced from Brazilian deposits.
• The presence of minimal matrix or secondary mineral inclusions that might obscure the kyanite blades.

How to Identify Raw Green Kyanite?

• Look for the characteristic long, bladed crystal habit typical of aluminum silicate minerals.
• Verify the distinct sea-green hue, which differentiates it from the standard blue or black kyanite varieties.
• Check for the mineral's unique anisotropic hardness, being significantly softer along the length of the crystal than across it.
• Examine the specimen for a pearly to vitreous luster on the cleavage faces.

History of Raw Green Kyanite

Kyanite is a polymorphic aluminosilicate mineral. While the blue variety is most common, the green variety is rarer and typically colored by trace amounts of chromium. It has been used historically in industrial ceramics and high-temperature electrical insulators before becoming popular in the metaphysical and gemstone markets.