Agate 18x25mm Brown Oval Bead - 15-16 Inch Shape_Coin It is also one of

It is also one of the hardest

it was named after Robert Carl Sticht the manager of the mine

One of the best-known physical properties of topaz is its hardness

while today it is primarily mined in Africa

The colors in this stone can range from pistachio to moss green with areas of pink

Agate 18x25mm Brown Oval Bead - 15-16 Inch Shape_Coin It is also one ofAgate is a common, often banded, variety of chalcedony quartz that forms within volcanic rock cavities, featuring a Mohs hardness of 7. Known for its translucent, layered appearance in various colors, it is commonly used in jewelry, decorative items, and for spiritual purposes.