Rough Gemstones

Gandhara Gemstones is one of the well-known sources for supplying rough gemstones from all over the world, we often travel directly to the mines to find the best stones and have friendly ties with mine owners in countries such as Pakistan, Afghanistan, South Africa, Thailand, and Cambodia. We also secure stones from trusted suppliers worldwide. We take pride in displaying our finest rough gemstones collection for enthusiasts around the world, that is why Gandhara Gemstones has dedicated a section for rough gemstones. Please take a look at all we have to offer in this section!

Deep Purplish Red Garnet Facet Rough Parcel
Deep Purplish Red Garnet Facet Rough Parcel Deep Purplish Red Garnet Facet Rough Parcel, available for sale at wholesale price, natural high quality, 65 carats, purplish red rough garnet gemstone from Tanzania. Product Information: Rough Gemstone Deep Purplish Red Garnet...
$286.00 $280.00
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Clean Rhodolite Garnet Faceting Rough
Clean Rhodolite Garnet Faceting Rough Clean Rhodolite Garnet Faceting Rough, available for sale at wholesale price, natural high quality, 56.4 carats rough rhodolite garnet gemstone from Tanzania. Product Information: Rough Gemstone Clean Rhodolite Garnet Faceting Rough Weight 56.4 carats Average...
$246.00
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Stunning Deep Carmine Garnet Facet Rough Parcel
Stunning Deep Carmine Garnet Facet Rough Parcel Stunning Deep Carmine Garnet Facet Rough Parcel, available for sale at wholesale price, natural high-quality 57.50 carats rough garnet gemstone from Tanzania. Product Information: Rough Gemstone Stunning Deep Carmine Garnet Facet Rough Parcel...
$253.00
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Purplish Red Rhodolite Garnet Facet Rough
Purplish Red Rhodolite Garnet Facet Rough Purplish Red Rhodolite Garnet Facet Rough, available for sale at wholesale price, natural high-quality, 56 carats rough Rhodolite garnet gemstone from Tanzania. Product Information: Rough Gemstone Purplish Red Rhodolite Garnet Facet Rough Weight 56...
$246.00
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Deep Carmine Garnet Facet Rough Parcel
Deep Carmine Garnet Facet Rough Parcel Deep Carmine Garnet Facet Rough Parcel, available for sale at wholesale price, natural high-quality, 70.50 carats rough garnet gemstone from Tanzania. Product Information: Rough Gemstone Deep Carmine Garnet Facet Rough Parcel Weight 70.50 carats...
$310.00
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Milano Red Rhodolite Garnet Facet Rough
Milano Red Rhodolite Garnet Facet Rough Milano Red Rhodolite Garnet Facet Rough, available for sale at wholesale price, natural high-quality rough garnet gemstone from Tanzania. Product Information: Rough Gemstone Milano Red Rhodolite Garnet Facet Rough Weight 63.75 carats Average Weight...
$280.00
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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
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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
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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
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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
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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
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6.05 Carats Orange Brown Mali Garnet Facet Rough
Orange Brown Mali Garnet Facet Rough, available for sale at wholesale price, natural high-quality rough gemstone, garnet facet rough from Mali. Product Information: Rough Gemstone Orange Brown Mali Garnet Facet Rough Weight 6.05 carats Dimensions 11 x 8 x 7.8...
$90.00
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Preformed Bolivianite Facet Rough Trio
Preformed Bolivianite Facet Rough Trio, available for sale at wholesale price, natural high-quality, preformed bolivianite gemstones trio from Bolivia. Product Information: Rough Gemstone Preformed Bolivianite Facet Rough Trio Weight 78.25 carats Average Weight 26.03 carats Biggest Piece 27.90 carats Smallest...
$155.00 $140.00
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Facet Rough Neon Blue Apatite Lot
Neon Blue Apatite Facet Rough Parcel, available for sale at wholesale price, natural high-quality rough gemstone, eye clean, rough apatite from Brazil. Product Information: Rough Gemstone Facet Rough Neon Blue Apatite Lot Weight 55 carats Average Weight 3.05 carats Biggest...
$110.00
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5.05 Carats Facet Rough Grossular Mali Garnet
Facet Rough Grossular Mali Garnet, available for sale at wholesale price, natural high-quality rough gemstone, eye clean, rough grossular garnet from Mali. Product Information: Rough Gemstone Facet Rough Grossular Mali Garnet Weight 5.05 carats Dimensions 9 x 8 x 7.5...
$105.00
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5.85 Carats Mali Garnet Facet Rough
Mali Garnet Facet Rough, available for sale at wholesale price, natural high-quality rough gemstone, eye clean, rough garnet from Mali. Product Information: Rough Gemstone Mali Garnet Facet Rough Weight 5.85 carats Dimensions 11 x 8 x 8 mm Clarity Eye...
$120.00
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79 Carats Facet Grade Rough Fluorite Lot
79 Carats Facet Grade Rough Fluorite Lot, available for sale at wholesale price, natural high-quality, eye to loupe clean clarity, rough fluorite from Madagascar. Product Information: Rough Gemstone Facet Grade Rough Fluorite Lot Weight 79 carats Average Size 13.16 carats...
$115.00
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85 Carats Preformed Ametrine Facet Rough Gemstone
Preformed Ametrine Facet Rough Gemstone, available for sale at wholesale price, natural high-quality 85 carats rough ametrine gemstones from Bolivia. Product Information: Rough Gemstone Preformed Ametrine Facet Rough Gemstone Weight 85 carats Average Weight 28.33 carats Biggest Piece 33.55 carats...
$155.00
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6.25 carats Orange Grossular Garnet Facet Rough
Orange Grossular Garnet Facet Rough, available for sale, natural high-quality rough gemstone, eye clean, 6.25 carats rough garnet from Mali. Product Information: Rough Gemstone Orange Grossular Garnet Facet Rough Weight 6.25 carats Dimensions 11 x 8 x 7 mm Clarity...
$125.00
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59 carats Greenish Yellow Peridot Facet Rough Parcel
59 carats Greenish Yellow Peridot Facet Rough Parcel, available for sale, natural high-quality, slightly included to eye clean, rough peridot from Pakistan. Product Information: Gemstone Name Greenish Yellow Peridot Facet Rough Parcel Weight 59 carats Average Weight 4.53 carats Biggest...
$175.00
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Facet Rough Neon Blue Apatite Parcel
Facet Rough Neon Blue Apatite Parcel, available for sale at wholesale price, natural high-quality 50 carats rough apatite from Brazil. Product Information: Rough Gemstone Facet Rough Neon Blue Apatite Parcel Weight 50 carats Average Weight 3. 125 carats Biggest Piece...
$100.00
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71.55 Carats Beautiful Fluorite Facet Rough Lot
71.55 Carats Beautiful Fluorite Facet Rough Lot, available for sale, natural high-quality, eye to loupe clean clarity, 71.55 carats rough fluorite from Madagascar. Product Information: Rough Gemstone Beautiful Fluorite Facet Rough Lot Weight 71.55 carats Average Size 7.15 carats Biggest...
$105.00
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78 Carats Facet Rough Preformed Ametrine Pieces
78 Carats Facet Rough Preformed Ametrine Pieces, available for sale at wholesale price, natural high-quality 78 carats rough ametrine gemstones from Bolivia. Product Information: Rough Gemstone Facet Rough Preformed Ametrine Pieces Weight 78 carats Average Weight 26 carats Biggest Piece...
$145.00 $140.00
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79.40 carats Facet Rough Preformed Ametrine Trio
79.40 carats Facet Rough Preformed Ametrine Trio, available for sale at wholesale price, natural high-quality rough ametrine gemstones from Bolivia. Product Information: Rough Gemstone Facet Rough Preformed Ametrine Trio Weight 79.40 carats Average Weight 26.46 carats Biggest Piece 28.50 carats...
$145.00
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Rough Gemstones

Gandhara Gemstones is one of the well-known sources for supplying rough gemstones from all over the world, we often travel directly to the mines to find the best stones and have friendly ties with mine owners in countries such as Pakistan, Afghanistan, South Africa, Thailand, and Cambodia. We also secure stones from trusted suppliers worldwide. We take pride in displaying our finest rough gemstones collection for enthusiasts around the world, that is why Gandhara Gemstones has dedicated a section for rough gemstones. Please take a look at all we have to offer in this section! Gemstones A gem is a precious or semiprecious stone that has been cut, polished, or otherwise modified to be used as personal insignia or as decoration. Rough Gemstones / Raw Gemstones A gemstone in its natural form that has not yet been polished or cut just like they were made by mother nature. They are referred to as raw gems but the most formal name is rough gemstones. Rough Gemstones Evaluation Good Color, Good Shape, Good Size and Good Clarity are normal desirable traits in rough gemstones. Color of Rough Gemstones: The eye will automatically find the most expensive stones because of its exquisite color. Color is the key in any gemstone that is colored around 60% or more, so look at color carefully, in various kinds of lights. Gemstones will most likely look different under lamp light than sunlight. The color distribution of rough gemstones Rough gemstones and minerals usually display uneven color distribution that can be caused by different aspects, such as: Color zoning Sectoral color distribution Irradiation Factor Color zoning of rough gemstones Chemical and physical changes in the environment during crystal growth can cause variations of color. The most common cause is variation in the chromophore elements that causes the more or less intense color in different growth zones of the same crystal. In some rough gemstones, color zoning corresponds to different saturation of the same color. Color zones can be easily seen by the naked eye or visible only under the microscope, color zoning can be wide or narrow. They can be uniformly formed in all directions or have very different thicknesses depending on crystallographic orientation, as a result of unequal growth velocity on different crystal faces. Commonly the uneven color distribution deeply affects crystal value or quality factors and cutters try to avoid color zoning visible from the crown. However, for some gems i.e tourmaline, color zoning can become very profitable when two or more different colors are clearly visible. The sectoral color distribution of rough gems During the initial stages of crystal formation, the growth sector can be described as a pyramid with the base corresponding to the crystal face and the apex in the center of the crystal. However, in most circumstances, the shapes of growth sectors are more complicated, due to changes in crystal habit Different growing levels in crystal structure have different capacities to consolidate impurities As a result, growth sectors formed by crystals usually have slightly different chemical composition, which will also cause variations of physical properties i.e color, refractive indexes The sectorial color distribution is a common phenomenon in many gems It is also responsible for a special gem variety such as ametrine, where same quartz amethyst and citrine coloration is observed in different growth sectors Curiously, synthetic ametrine has color zoning as a mechanism for the formation of two different colors within the same crystal Irradiation Factor of gemstones Irradiation is also one of the most traditional treatments for gemstones, applied to a wide variety of gems to produce or intensify their color Natural irradiation in many instances causes non-homogeneous coloration because certain parts of the crystal may stay in closer vicinity to the source of irradiation Such are the cases of green sports on some diamond crystal or black halos around uranium and thorium minerals included inside quartz crystals Various types of ionizing radiation can provoke the creation of optically active centers in minerals changing their color Radioactive decay in mineral deposits is the reason for naturally occurring blue topaz, green diamonds, smoky quartzes, etc. The penetration potential of different types of radiation is very dynamic i.e Gamma rays and neutrons passes effortlessly through large crystals and provide homogeneous color distribution Beta rays only penetrate to a very small depth in minerals when they are used for diamond treatment, produced color concentrates in a very thin layer close to the surface, usually on the pavilion Lastly, alpha rays have very low penetration power and are not suitable for gem treatment The shape of faceting rough gemstones: Generally, you want a faceting rough gemstone that’s “rounded” or "blocky" Flat or twisted shapes rough gemstones with deep pits or valleys will yield very poorly Here’s an example of a badly-shaped facet rough: //pic Size of rough gems: Everyone has there own thoughts about the rough gem size. Facet rough gemstones traders will often say you’ll get a 1-carat gemstone from a 2-carat rough gemstone. Moreover, some cutters will claim such feats regularly, but any cutter who keeps records of actual weights knows the truth. The industry standard for commercial rough cutting is a 20% yield meaning 80% loss of weight is normal Keeping this in mind you won’t go too wrong. If you want a 1-carat gemstone, then buy a facet rough stone of at least 5 carats. This is fundamental in understanding what to expect from your faceting rough gemstone. Clarity of Rough Gemstones: You want a stone that’s flawless and “clean” of any inclusions. Flaws are cracks or open cleavages or other things that compromise not only the appearance of gemstone but also its structure. A flaw breaching the surface of a stone is very bad because it hampers light at the surface as well as internally. A perfectly clean gemstone is difficult to find and is not necessarily the target. The aim is overall presentation and beauty of a gemstone, in general, flaws and inclusions are things we like to avoid in the purchase or to remove in the cutting.

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