Tourmaline is the name of a large group of boron silicate minerals. These minerals share a common crystal structure and similar physical properties. However, they vary tremendously in chemical composition. The wide range of compositions and color zoning within crystals causes tourmaline to occur in more colors and color combinations than any other mineral group known in the world.
Tourmaline most commonly occurs as an accessory mineral in igneous and metamorphic rocks. Large, well-formed crystals of tourmaline can form in cavities and fractures during hydrothermal activity. Tourmaline is a hard and tenacious mineral. That enables it to persist during stream and beach transport as durable grains in sediments and sedimentary rocks.
These Tourmaline specimens are so cute and colorful! Each of these specimens range from shades of pink to green and blend into one another. I love how each specimen is so vibrant and instantly boosts my mood by looking at its colors. Any of these smaller, Tourmaline specimens would look beautiful to wear in jewely. Whether, you're a collector or just interested in spoiling yourself with some new and colorful specimens, these Bi-color Tourmaline pieces are for you!
Weight: about 1 gram
XS and Small Size: ~ 1/2"X1/8"X1/8"
Medium: ~ 1/2"X3/8"X1/4"