Rough Gemstones

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 their 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 lamplight than under 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 habits 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 compositions, 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 the 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 pass 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, produce 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:

Size of rough gems:

Everyone has their own thoughts about the rough gem size. Facet rough gemstone 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 the 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 the 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.

Buy Rough Gemstones at best price

Embark on a journey to acquire the most exquisite Rough Gemstones at unbeatable prices, courtesy of Gandhara Gems. Our commitment to offering premium quality Rough Gemstones at competitive rates sets us apart as your ultimate destination for uncut treasures of nature.

Why Choose Gandhara Gems for Rough Gemstones:

1. Competitive Pricing: We believe that appreciating the raw, uncut beauty of Rough Gemstones should be accessible to all. At Gandhara Gems, you'll find our prices to be not only competitive but also reflective of the true value of these natural wonders.

2. Diverse Selection: Our curated collection spans a diverse spectrum of Rough Gemstones, showcasing a wide array of colors, textures, and sizes. Whether you seek the earthy charm of uncut crystals or the vibrant allure of unprocessed gemstones, we have something to captivate every connoisseur.

3. Ethical Sourcing: We prioritize ethical sourcing practices, ensuring that every Rough Gemstone in our inventory is obtained responsibly and sustainably. Your purchase supports responsible mining and trade practices.

4. Collector's Paradise: For avid collectors and enthusiasts, our Rough Gemstones collection is a true treasure trove. Each specimen tells a unique geological story and offers a rare glimpse into the unrefined beauty of nature.

5. Artistic Freedom: Rough Gemstones are a canvas for creativity. Whether you're a jewelry designer, lapidary artist, or simply an admirer of uncut gems, our Rough Gemstones provide the raw materials for your artistic expression.

6. Expert Guidance: Our team of gemstone experts is ready to assist you at every step. Whether you're new to Rough Gemstones or a seasoned collector, we provide expert guidance to help you make informed choices.

7. Transparent Transactions: Transparency is at the core of our business. When you shop with Gandhara Gems, you can trust that the price you see is the price you pay, with no hidden fees or surprises.

Unearth the uncut beauty of Rough Gemstones with Gandhara Gems and experience the allure of nature's raw elegance. Whether you're looking to add unprocessed gemstones to your collection or embark on a creative journey, our Rough Gemstones offer endless possibilities. Start your adventure today and discover the unrefined beauty that lies within these remarkable treasures of the Earth. Visit Gandhara Gems and make Rough Gemstones a part of your unique story.