Kunzite is a mineral with a hardness of 6 out of 10 on the Mohs scale of mineral hardness [?]. These Monoclinicly structured gems are made of lithium aluminum silicate, their full chemical compound being LiAl(Si2O6).

Kunzite is the pinkish lilac variety of the spodumene. These crystals or stones have a light pink hue because they constrain, traces manganese. Kunzite was first discovered in California in the early 20th century, and is known for its pleochroism. Its been noted that prolonged exposure to uv or solar lighting will diminish this stones color.

This stone is generally sought after for its properties as a crystal, its lack of hardness makes it not very suitable as a gemstone as its facet faces will not hold.

Why does Kunzite fade in sunlight?

Kunzite's pink to lilac color is photosensitive and can fade with exposure to sunlight or heat. This sensitivity requires careful storage away from light and heat sources. Some faded stones can regain color if stored in darkness.

What makes Afghan Kunzite so valuable?

Afghan kunzite is prized for its intense pink-purple color and exceptional clarity. These specimens often show stronger color saturation than Brazilian material and can achieve larger sizes while maintaining fine color.

Why are large Kunzites relatively affordable?

Unlike many gems, kunzite commonly forms in large crystals. However, fine color in larger stones is still valuable. The challenge is finding stones that maintain strong color without excessive lightness in larger sizes.

How important is cutting direction?

Kunzite shows strong pleochroism, appearing different colors when viewed from different directions. Proper cutting orientation is crucial to show the strongest pink color face-up. Poorly oriented stones may appear nearly colorless.

Are Cat's Eye Kunzites real?

Cat's eye kunzite exists but is extremely rare. The chatoyancy effect must compete with the stone's natural high brilliance. These specimens are highly valued by collectors, especially if showing strong color.

Why do some pieces show color zoning?

Natural color zoning is common in kunzite, with some areas showing stronger color than others. While even color is preferred, distinctive zoning patterns can be valuable to collectors if aesthetically pleasing.

How should Kunzite jewelry be worn?

Due to its perfect cleavage and moderate hardness (6.5-7), kunzite requires careful wearing. Best suited for occasional wear pieces like pendants and earrings. Rings should be protective settings and worn with care.

The specific gravity [?] for Kunzite is 3.18, its refractive index [?] is 1.66-1.68, and its double refraction [?] is 0.016.

History

Kunzite was named after George Frederick Kunz, an American mineralogist and gemologist who first described the gemstone in 1902.

Industrial Usages

Kunzite is used mainly in necklaces. Its relative softness and cleavage make it less suitable for industrial applications.