Topaz 4mm Round A-Grade - 15-16 Inch ROUND Opals are hydrated amorphous forms

Opals are hydrated amorphous forms of silica

according to the Mohs hardness scale

Rhyolite or Tuff

the only region in the world where the stone is found

believed to have a special significance to those in romantic relationships

Topaz 4mm Round A-Grade - 15-16 Inch ROUND Opals are hydrated amorphous formsTopaz obtains much of its popularity from its beautiful colors and its status as a birthstone. Natural topaz colors include rare and valuable yellow, orange, pink, red, purple, and blue. One of the best known physical properties of topaz is its hardness. It has a hardness of 8 on the Mohs hardness scale, making it the hardest silicate mineral. It also serves as the Mohs hardness scale index mineral for a hardness of 8.