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These needle to like black inclusions of Tourmaline are quite striking within the clear
Diamonds actually form at high temperatures and pressures that occur in Earth's mantle about 100 miles below Earth's surface
Blue Tourmaline ranges in color from green to blue to yellow to green with black
” It is one of the most sought to after minerals among gem and mineral collectors
Iolite 8mm Double Heart Faceted - 15-16 Inch Size_7x10-9x14mm These needle to like blackIolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called pleochroism, which means that it can appear to be different colors as it shifts in the light. According to Norse legend, Viking explorers used thin pieces of Iolite as the worlds first polarizing lens to help them determine the exact location of the sun for navigation.
