Rough Topaz
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.
Facet Rough Brown Topaz Pieces
Facet Rough Brown Topaz Pieces Facet Rough Brown Topaz Pieces, available for sale, natural high-quality rough gemstones, eye clean, 197.20 carats rough topaz from Madagascar. Product Information: Gemstone Type Facet Rough Brown Topaz Pieces Weight 197.20 carats Average Weight 65.74...
$145.00
Light Brown Topaz Facet Rough Parcel
Light Brown Topaz Facet Rough Parcel Light Brown Topaz Facet Rough Parcel, available for sale, natural high-quality rough gemstones, eye clean, 306 carats rough topaz from Madagascar. Product Information: Gemstone Type Light Brown Topaz Facet Rough Parcel Weight 306 carats...
$225.00
Facet Rough Light Brown Topaz Parcel
Facet Rough Light Brown Topaz Parcel Facet Rough Light Brown Topaz Parcel, available for sale, natural high-quality rough gemstones, eye clean, 166 carats rough topaz from Madagascar. Product Information: Gemstone Type Facet Rough Light Brown Topaz Parcel Weight 166 carats...
$145.00
$120.00
Light Blue Topaz Facet Rough Parcel
Light Blue Topaz Facet Rough Parcel Light Blue Topaz Facet Rough Parcel, available for sale at wholesale price, natural high-quality rough gemstones, eye clean, 193.85 carats rough topaz from Madagascar. Product Information: Gemstone Type Light Blue Topaz Facet Rough Parcel...
$155.00
$140.00
200.50 Carats Facet Rough Light Blue Topaz
Facet Rough Light Blue Topaz, available for sale, natural high-quality rough gemstones, eye clean, 200.50 carats rough topaz from Madagascar. Product Information: Gemstone Type Facet Rough Light Blue Topaz Weight 200.50 carats Average Weight 25 carats Clarity SI to Eye...
$145.00
112.55 Carats Facet Grade Rough Swiss Blue Topaz
112.55 Carats Facet Grade Rough Swiss Blue Topaz, available for sale, natural high-quality loupe clean rough topaz gemstone from Brazil. Product Information: Gemstone Type Facet Grade Rough Swiss Blue Topaz Weight 112.55 carats Dimensions 30 x 22 x 18 mm...
$180.00
Brazilian Swiss Blue Topaz Facet Rough
Brazilian Swiss Blue Topaz Facet Rough, available for sale, natural high-quality loupe clean rough topaz, 89.40 carats topaz gemstone from Brazil. Product Information: Gemstone Type Brazilian Swiss Blue Topaz Facet Rough Weight 89.40 carats Dimensions 22 x 20 x 17...
$145.00
Sky Blue Topaz Facet Rough Gemstone
Sky Blue Topaz Facet Rough Gemstone, available for sale, natural high quality, rough topaz gemstone from Brazil. Product Information: Gemstone Type Sky Blue Topaz Facet Rough Gemstone Weight 83.40 carats Dimensions 30 x 20 x 14 mm Clarity Eye to...
$135.00
135.85 Carats Facet Rough Electric Swiss Blue Topaz Duo
135.85 Carats Facet Rough Electric Swiss Blue Topaz Duo is for sale at wholesale price from Brazil. Product Information: Gemstone Type Facet Rough Electric Swiss Blue Topaz Duo Weight 135.85 carats Average Weight 67.92 carats Biggest Piece 87.60 carats Smallest...
$225.00
$215.00
94 Carats Natural Rough Electric Swiss Blue Topaz
94 Carats Natural Rough Electric Swiss Blue Topaz is for sale at wholesale price from Brazil. Product Information: Gemstone Type Natural Rough Electric Swiss Blue Topaz Weight 94 carats Dimensions 30 x 25 x 14 mm Clarity Eye to Loupe...
$150.00
437 Carats Light Blue Topaz Facet Rough Pieces
437 Carats Light Blue Topaz Facet Rough Pieces are for sale at wholesale price from Brazil. Product Information: Gemstone Type Light Blue Topaz Facet Rough Pieces Weight 437 carats Average Weight 87.4 carats Biggest Piece 120 carats Smallest Piece 74...
$385.00
206 carats Electric Swiss Blue Topaz Facet Rough Duo
206 carats Electric Swiss Blue Topaz Facet Rough Duo is for sale at wholesale price from Brazil. Product Information: Gemstone Type Electric Swiss Blue Topaz Facet Rough Duo Weight 206 carats Average Weight 103 carats Biggest Piece 111 carats Smallest...
$325.00
86.60 carats Facet Rough Light Yellow Topaz Pieces
86.60 carats Facet Rough Light Yellow Topaz Pieces is for sale at wholesale price from Nigeria. Product Information: Gemstone Type Facet Rough Light Yellow Topaz Pieces Weight 86.60 carats Average Weight 7.87 carats Clarity Slightly Included to Eye Clean No...
$120.00
87.50 Carats Light Yellow Topaz Facet Rough Pieces
87.50 Carats Light Yellow Topaz Facet Rough Pieces are for sale at wholesale price from Nigeria. Product Information: Gemstone Type Light Yellow Topaz Facet Rough Pieces Weight 87.50 carats Average Weight 10.93 carats Clarity Slightly Included to Eye Clean No...
$125.00
93.40 Carats Facet Rough Swiss Blue Topaz
93.40 Carats Facet Rough Swiss Blue Topaz is for sale at wholesale price from Brazil. Product Information: Gemstone Type Facet Rough Swiss Blue Topaz Weight 93.40 carats Dimensions 33 x 20 x 16 mm Clarity Eye Clean / Better No...
$165.00
Facet Grade Rough Golden Topaz
Product Information: Gemstone Type Facet Grade Rough Golden Topaz Weight 286.20 carats Dimensions 32 x 31 x 25 mm Clarity Eye Clean / Better Origin Skardu, Pakistan Treatment None Description: Topaz is a tremendous blue-colored, semi-precious gemstone from the Topaz...
$570.00
69 carats Golden Topaz Facet Rough Pieces
69 carats Golden Topaz Facet Rough Pieces is available for sale at wholesale price from Skardu, Pakistan. Product Information: Gemstone Type Golden Topaz Facet Rough Pieces Weight 69 carats Average Weight 17.52 carats Clarity Eye Clean / Better No of...
$95.00
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. Product Information: Gemstone Type Meaty London Blue Topaz Facet Rough Weight 152.30 carats Dimension 30 x 29 x 21 mm Clarity Loupe Clean...
$610.00
145 Carats Kashmir Blue Topaz Facet Rough
145 Carats Kashmir Blue Topaz Facet Rough is available for sale at wholesale price from Brazil. Product Information: Gemstone Type Kashmir Blue Topaz Facet Rough Weight 145 carats Dimension 35 x 25 x 19 mm Clarity Loupe Clean Origin Brazil...
$580.00
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. Product Information: Gemstone Type Lusty London Blue Topaz Facet Rough Weight 181 carats Dimension 34 x 27 x 20 mm Clarity Loupe Clean...
$725.00
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. Product Information: Gemstone Type Hunky London Blue Topaz Facet Rough Weight 195 carats Dimension 32 x 29 x 19 mm Clarity Loupe Clean...
$795.00
$780.00
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. Product Information: Gemstone Type Robust London Blue Topaz Facet Rough Weight 178.60 carats Dimension 43 x 25 x 21.5 mm Clarity Loupe Clean...
$715.00
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. Product Information: Gemstone Type Facet Rough London Blue Topaz Weight 135.85 carats Dimension 33 x 25 x 22 mm Clarity Loupe Clean Origin Brazil...
$545.00
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. Product Information: Gemstone Type London Blue Topaz Facet Rough Weight 166.80 carats Dimension 32 x 25 x 18 mm Clarity Loupe Clean Origin Brazil...
$665.00
Rough Topaz
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. |
