Gem Minning Process
Our Process
MINING

Gemstone Mining is awfully sophisticated and deadly process that requires enormous input of precious resources such as time, workforce, equipments and expertise etc. There are different techniques for recovering the gemstone from the earth. In order to achieve optimistic results, the primary requirement of this procedure is to recognize the gemstone deposits. Gem production in Sri Lanka dates back to around 500 B.C. There are five gem producing areas in Sri Lanka. The customary areas extend from Avissawella, to Balangoda to Embilipitiya. The important mining centers such as Eheliyagoda, Ratnapura, Pelmedulla and Kahawatte are in the above mentioned areas.

The following are some of the mining processes practiced worldwide.

Surface Mining

Hydraulic Mining, River Panning, Open Pit Mining, Strip Mining, Mountaintop Removal Mining, Quarrying Underground Mining

Borehole Mining, Drift Mining, Shaft Mining, Slope Mining, Hard Rock Mining,

CUTTING

Every gemstone has a certain cut that it is renowned for. Today innovative exhilarating designs can be created for high-end gemstones giving them an exclusive style. When a gemstone is preferred to be used in jewelry, it is cut depending on the size and shape of the rough, as well as the desired piece of jewelry to be made. There are several techniques available to work with gemstones. Specifically, sawing, grinding, sanding, lapping, polishing, grilling, and tumbling.

Universal Gemstone Cuts

Round Brilliant Cut

This is the gem cut that focus on outstanding radiance. It is the most distinctive cut in diamond engagement rings today. The shape resembles that of a cone and offers maximized light return through the top of the diamond. This is the reason why diamonds cut in this way are so expensive compared to the other cuts on the market.

Marquise Cut

An elongated royal shape cut that maximizes the carat weight of a gemstone. The figure materialized in the 18th century, but many correlate it with jewelry styles from the 1970s. Marquise cuts may illustrate more color and inclusions than other brilliant cuts. Fancy shapes like Ovals, Marquises, Hearts, and Pears will have bow ties of varying degrees, and it is best to shun excessively deep or shallow stones.

Cabochon Cut

A technique of cutting gemstones with a convex, rounded surface that is polished but unaffected. Opaque, asteriated, iridescent, opalescent, or chatoyant stones are typically cut en cabochon. The back of a normal cabochon-cut stone is flat, but it may be hollowed to lighten the colour. Garnet, jasper, bloodstone, moonstone, cat's-eye, and star ruby and sapphire are among the gemstones generally completed in this manner. Using this cut makes scratches less apparent.

Pear Cut

Pear cuts are acknowledged for their luminosity and enduring stylishness. The pear-like shape of this cut creates a slimming effect on the fingers when worn. Pear cuts usually appear bigger from the 'face up' position than other shapes of the similar carat weight.

Princess Cut

The second most popular cut shape for diamonds, next to a round brilliant (since its creation in the 1960s). The face-up shape of the princess cut is square or rectangular and the profile or side-on shape is comparable to that of an inverted pyramid with four beveled sides. Generally a gemstone of this cut is a bit cheaper than a round brilliant of the same carat. This is since approximately 80% of the raw diamond is used instead of the 50% for round brilliants.

Heart Cut

Considered as the most gorgeous looking of the gemstone cuts. The expertise required to produce a gemstone with this form is amazing. Majority of the gemstones with this cut are awfully expensive because of the skill requirements as well as the rarity of stones that can be appropriately designed into a heart shape.

COLOR

The color of any material is due to the nature of light itself. When light strikes a material, majority of the light is engrossed. The part that is reflected reaches the eye as the perceived color

The difference in color is based on the atomic structure of the stone. Although the different stones formally have the same chemical composition, they are not exactly the same. Every now and then an atom is replaced by a completely different atom. These so-called impurities are sufficient to absorb certain colors and leave the other colors unaltered.

Some gemstone treatments make use of these impurities to change the color of the gem.

TREATMENT

The treatment and enhancement of gemstones has survived for many decades. Gemstones are frequently treated to augment the color or clarity of the stone. Depending on the kind and extent of treatment, they can influence the value of the stone. Some gemstone treatments are enduring, but others are not. Heat treatments can go whichever way, because they generate permanent color changes in some gems -- momentary changes in others.

  • Heat and radiation is frequently used to alter or improve gemstone colors.
  • Diffusion is used to intensify a gem's color. Diffusion only intensifies a gemstone's outer layers.
  • Oil and waxes augment gemstone colors by filling-in fine surface cracks, blending them away momentarily.
  • Fracture filling coats gems with a clear or colored epoxy resin or another substance. The treatment fills-in cracks, which improves the appearance of the gemstone.
  • Laser drilling removes inclusions, improving lucidity.