Tremolite - Tanzania These impact zones were officially

These impact zones were officially discovered in 1576 but their presence was already well known by the original inhabitants of the area

commercial-grade citrine is often amethyst that has been heated to extreme temperatures

Hematite is said to absorb and dispel negativity while stimulating concentration and focus

or just want a beautiful specimen to show off

of ammonites has gained popularity over the years

Tremolite - Tanzania These impact zones were officiallyTremolite is part of a group of silicate minerals that forms in sediments rich in dolomite and quartz. Pure tremolite is a creamy white but will change to a green color depending on the content of iron present. Nephrite jade is actually just a green variety of tremolite. Unfortunately, the fibrous form of this mineral has been classified as one of the six recognized forms of asbestos. At high environmental temperatures, this mineral will convert to