Poldervaartite has a hardness of 5-6 on the Mohs scale and a specific gravity of 3
also called "white topaz" which is often utilized as a substitute for diamond
The radiation exposure that creates Smoky Quartz can come from naturally occurring sources such as uranium and other radioactive elements in the earth's crust
5 to 4 on the Mohs hardness scale
Moon Shape: The moonstone in this pendant is shaped like a crescent moon
Labradorite Sphere 40mm Congo Poldervaartite has a hardness ofThese spheres are perfect to add to your collection. They have a gorgeous blue flash when the light hits it. Measures 40mm. Labradorite is a plagioclase feldspar with a triclinic crystal structure. It is treasured for its remarkable play of color (labradorescence), which shows vivid flashes of green, blue, gold, orange, red, and sometimes violet. It is from Canada, Madagascar, and the US. It has a hardness score of 6 6. 5. Legend has it that the