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Topaz Rough Gems
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69 carats Golden Topaz Facet Rough Pieces
69 carats Golden Topaz Facet Rough Pieces is available for sale at wholesale price from Skardu, Pakistan.
$ 95Add to cart -
Buy 75 Carats Swiss Blue Topaz Facet Rough
Buy 75 Carats Swiss Blue Topaz Facet Rough which is for sale at wholesale price from Brazil.
$ 135$ 145Add to cartBuy 75 Carats Swiss Blue Topaz Facet Rough
$ 135$ 145 -
152.30 carats Meaty London Blue Topaz Facet Rough
152.30 carats Meaty London Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 610Add to cart -
145 Carats Kashmir Blue Topaz Facet Rough
145 Carats Kashmir Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 580Add to cart -
181 carats Lusty London Blue Topaz Facet Rough
181 carats Lusty London Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 725Add to cart -
195 Carats Hunky London Blue Topaz Facet Rough
195 Carats Hunky London Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 780Add to cart$ 795 -
178.60 carats Robust London Blue Topaz Facet Rough
178.60 carats Robust London Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 715Add to cart -
Buy 78.3 carats Facet Rough Yellow Topaz
Buy 78.3 carats Facet Rough Yellow Topaz which is for sale at wholesale price from Nigeria.
$ 100Add to cart -
Buy 97.5 Carats Yellow Topaz Facet Rough
Buy 97.5 Carats Yellow Topaz Facet Rough which is for sale at wholesale price from Nigeria.
$ 200Add to cart -
135.85 carats Facet Rough London Blue Topaz
135.85 carats Facet Rough London Blue Topaz is available for sale at wholesale price from Brazil.
$ 545Add to cart -
166.80 carats London Blue Topaz Facet Rough
166.80 carats London Blue Topaz Facet Rough is available for sale at wholesale price from Brazil.
$ 665Add to cart -
73.60 Carats Polo Blue Topaz Facet Rough
73.60 Carats Polo Blue Topaz Facet Rough which is available for sale at wholesale price from Brazil.
$ 135Add to cart
Rough Topaz is mostly associated with blue these days; it actually comes in a wide range of attractive colors, with the sunset orange variety, Imperial Topaz, the most valuable.
Rough Topaz has been used to refer to yellowish gemstones for at least two thousand years, although early rough gemstone traders did not realize that these yellow gemstones could be a variety of different crystals. As rough gemstone traders began to get more sophisticated, they realized that these yellow gemstones may be sapphire, quartz, beryl, or what we now know as topaz.
The name topaz may have been derived from the Greek island of Topázos in the Red Sea where a yellow gemstone was mined and the Greek verb topazein meaning ‘to try to find’ but we prefer the Sanskrit word ‘Tapas’ meaning heat or fire as the source of the modern ‘topaz’ as it more captures the brilliance of the gemstone. Rough Topaz makes an ideal gemstone. It comes in a wide range of colors. Its relatively hard qualities allow for many uses.
Gemological Properties of Rough Topaz:
Chemical Formula | Al2 SiO4 (F, OH) 2 Fluor containing aluminum silicate. |
Crystal Structure | Prisms with multi-faceted ends, orthorhombic, often octagonal in cross-section. |
Color | Colorless, light to dark blue, yellow, orange, red-brown, pink-red, red, violet, light green. |
Hardness | 8 on the Mohs scale |
Refractive Index | 1.609 – 1.643 |
Density | 3.49 – 3.57 |
Cleavage | Perfect |
Transparency | Translucent to transparent |
Double Refraction or Birefringence | 0.008 to 0.016 |
Luster | Vitreous |
Fluorescence | Under long wavelength UV, white and blue shows a weak yellow or greenish glow; yellow, brown, and pink can show a robust orange-yellow glow; red shows a soft yellow-brown glow. |
Check out our Rough Topaz category for large pieces of rough that are ideal to practice faceting on. The Loose Topaz and Topaz Specimens category has some beautiful terminated examples of various colors of Topaz.