Green tourmaline from Brazil
Size-
2.9cm x 2.7cm x 1.5cm
Weight-
20g
You will receive the item in the photo
Green tourmaline is also known as verdelite.
Crystal system- Trigonal (forming long slender to thick prismatic crystals,often with a distinctive rounded triangular cross-section and vertical striations.)
Mineral class- silicate mineral group,specifically classified as a cyclosilicate ( complex boron silicate containing iron,aluminium,and other trace elements)
Rock formation- Forms deep within the earth in igneous and metamorphic environments,most commonly in granite pegmatites,hydrothermal veins and metamorphic rocks like schist and marble.
Hardness- 7-7.5 on the MOHs scale
