Radiant Blue Topaz Heart, Blue Gemstones, Heart Gemstone, Blue Topaz, Sky Blue Topaz, 7 x 7mm, 1.60 ct
Ravishing Sky blue topaz heart, illustrious pendant or ring gemstone measuring 7 x 7 mm, weighing 1.60 cts. The gemstone you see here , as usual, is the gem you are purchasing. My prices are lower than many popular jewelry and gemstone suppliers, as well you are sure to be getting the stone pictured. 100% guaranteed.
Returns are accepted After you have messaged me and arranged proper method of mailing return. You have 5 days from receipt to inspect them, if not to your satisfaction, you then message me for a return authorization, thus insuring I am aware the gem is again in transit and I can follow the tracking number. Gems over 100.00 USD must be insured both ways.
Size: 7x 7 mm
Shape: Heart Facet
Colour: Fair Sky Blue
Specific Gravity: 3.4 - 3.5+
Refractive Index: 1.61 - 1.64
Chemical Composition: Al2SiO4(F,OH)3, Aluminum Silicate Fluoride Hydroxide
Crystal Structure: Orthorhombic
Some clear topaz crystals from Brazilian pegmatites can reach boulder size and weigh hundreds of pounds. Crystals of this size may be seen in museum collections. The Topaz of Aurangzeb, observed by Jean Baptiste Tavernier weighed 157.75 carats. The American Golden Topaz, a more recent gem, weighed a massive 22,892.5 carats.
Pure topaz is colorless and transparent but is usually tinted by impurities; typical topaz is wine red, yellow, pale gray, reddish-orange, or blue brown. It can also be made white, pale green, blue, gold, pink (rare), reddish-yellow or opaque to transparent/translucent.
Orange topaz, also known as precious topaz, is the traditional November birthstone, the symbol of friendship, and the state gemstone of the US state of Utah.
Imperial topaz is yellow, pink (rare, if natural) or pink-orange. Brazilian Imperial Topaz can often have a bright yellow to deep golden brown hue, sometimes even violet. Many brown or pale topazes are treated to make them bright yellow, gold, pink or violet colored. Some imperial topaz stones can fade on exposure to sunlight for an extended period of time.
Yellow topaz in stepped kite-shaped cut
Blue topaz is the state gemstone of the US state of Texas. Naturally occurring blue topaz is quite rare. Typically, colorless, gray or pale yellow and blue material is heat treated and irradiated to produce a more desired darker blue.
Mystic topaz is colorless topaz which has been artificially coated giving it the desired rainbow effect.
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