Lemon Quartz 14mm Faceted Star - 15-16 Inch Hole Size_1.7mm Kyanite is also extremely useful

Kyanite is also extremely useful in industrial applications due to its high heat resistance

The blue colors are photosensitive and may fade when exposed to excessive light or heat

Amethyst is a beautiful purple stone

but can also appear silver

Lemon Quartz 14mm Faceted Star - 15-16 Inch Hole Size_1.7mm Kyanite is also extremely usefulLemon Quartz is a trade name for color enhanced yellow quartz. Gamma ray irradiation, followed by a mild heat treatment gives it the bright yellow color. **Please note that no there is no residual radiation in the stones after processing, and the Nuclear Regulatory Commission has stated that they are safe to handle and wear.** Yellow quartz is rhought to enhance clarity, happiness, and balance.