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Tourmaline Indigolite blue natural crystal 6.1g, Nigeria
Tourmaline Indigolit natural blue crystal, suitable for jewelers and collectors. Indigolite is a popular stone for jewelry making due to its beautiful colors. Nigeria is one of the major sources of tourmalines, including rare blue indigolites. These stones often have very vivid and rich colors that can include dark shades of blue that resemble the color of indigo. Nigerian tourmalines are popular for their clarity and quality, making them highly sought after gems for collectors and jewelers alike.
Weight: 6.1 g
Dimension: 1.83 x 1.48 x 1.06 cm
Color: dark blue
Country of origin: Nigeria
Location : Oyo State
You always buy the mineral shown in the photo!
Except for color and transparency, the whole group of tourmalines has the same properties.
Physical properties: Hardness 7–7.5, brittle, density 2.9–3.2 g / cm³, fission imperfect according to {1011}, shell fracture, uneven.
Optical properties: Color: various, depending on the variety. There are crystals that are multicolored in the transverse or longitudinal direction. Glassy gloss, transparency: transparent, translucent, opaque (according to the variety), white scratch with a color shade according to the color of the variety.