Gemologist Guide to Identifying Actinolite
Actinolite is a green-to-black gemstone thatโs generally translucent and sometimes displays the โcat’s eyeโ effect. It has a fibrous amphibole composition similar to Tremolite and often forms glassy, flattened crystal prisms. These crystals are relatively common worldwide but gem-quality stones are actually somewhat rare. If you’re just starting out collecting rocks and minerals then you […]
Gemologist Guide to Identifying Amber
Amber is not a mineral or a rock, it’s classified as an organic gemstone. Itโs considered organic because it is fossilized resin from now-extinct species of coniferous trees that once flourished over thirty million years ago. You’ll want to remember the age range of 30 – 50 million years because there is another organic gemstone […]