Amethyst 6mm Round - Large Hole Beads 8-12mm a hydrous copper silicate

a hydrous copper silicate

A variety of granite sealing products are available online or through home improvement stores

Its inclusions of golden tones to rust to red are due to traces of hematite embedded in the stone

Black Spinel not only has the dark color

The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the crystal lattice of the stone

Amethyst 6mm Round - Large Hole Beads 8-12mm a hydrous copper silicateAmethyst is a beautiful purple stone, known as a Gem of Fire by ancient cultures. It has been greatly sought after throughout history and was at times valued as highly as Diamond. Today, this semi to precious variety of quartz is found in many locations around the world. The presence of Manganese within the stone produces the purple hue, and variation of the amount of iron in the stone creates a color range from reddish purple to deep violet to light