Gemstone Treament Guide

Gemstone Treament Guide

Gemstones are often treated to enhance their appearance or durability. This practice has been used for centuries, and today, many gemstones that are sold on the market have undergone some form of treatment. Common treatments include synthetic, heated, color enhanced, dyed, plated, assembled and stabilised. It is important for buyers to be aware of any treatments a gemstone has undergone. For the benefit of your customers and your company, we strongly recommend that you understand the processing and disclose it to your customers.

Natural: Natural stones are found in the earth and not treated or are not currently known to be treated.

Heated: Heating is used to improve the color of a gemstone. Heating can be used to lighten or deepen the color of a gemstone, or to remove unwanted colors. For example, almost all black onyx on the market is heated and dyed. Most red tiger’s eye stone in the market is heated from brown tiger’s eye stone. Carnelian is naturally orange or reddish in color, but can be heated to deepen its color and make it more vibrant and consistent. Heating can also be used to remove unwanted colors or inclusions from the stone, resulting in a more polished and attractive gemstone.

Synthetic: A synthetic gemstone is a man-made gemstone that is designed to have the same physical and chemical properties as a natural gemstone. Synthetic gemstones are created in a laboratory using advanced technology, and are often made to mimic the appearance of rare and valuable natural gemstones. Synthetic gemstones are often used as an alternative to natural gemstones, as they are more affordable and can be made in large quantities.

Dyed: Dying is used to change the color of a gemstone or add new color. This is often done with porous gemstones to create a desired color such as jade, pearl and agate which may have naturally dull or uneven coloring. For example, jade can be dyed to create a range of colors, from deep black to vibrant pink.

Assembled: Assembled gemstones refer to stones that have been created by combining two or more smaller pieces of stone material and other material. This is done to create a larger, beautiful and more valuable piece of gemstone that can be used in jewelry or other decorative items. The treatment of assembled gemstones will depend on the materials used and the desired outcome. In some cases, the pieces may be glued together, while in others they may be fused using heat or pressure. The finished piece may then be polished and cut to create a desired shape and size. For example, Magnesite and Shell Assembled Beads.

Coating: Coating is a treatment that is used to change the color or appearance of a gemstone, or to make it more durable. Coating is typically done using a clear, transparent material, such as plastic or resin, which is applied to the surface of the gemstone. For example, a clear coat of resin can be applied to a gemstone to improve its shine and luster, or to protect it from scratches or damage.

Bleached: Bleaching uses chemicals to lighten or remove unwanted colors from a gemstone. This is typically done using a strong acid, such as hydrochloric acid, which is applied to the surface of the gemstone. Bleaching is often used on gemstones that have naturally dark or dull colors, such as pearls or shells. By bleaching the gemstone, it can be made to appear more vibrant and lustrous. Bleaching can also be used to remove unwanted colors or inclusions from a gemstone, such as brown or gray tones in a diamond. Bleaching is a permanent treatment.

Color Enhanced: This means that such gems are generally enhanced. Since many treatments are difficult or impractical to prove explicitly. Color enhancement is a treatment that is used to improve the color of a gemstone. This can be done using a variety of methods, such as heating, dying, or stablising.

Stabilised: Stabilization is a treatment that is used to improve the durability of a gemstone. This is typically done using a clear, transparent material, such as plastic or resin, which is applied to the surface of the gemstone. The material is then cured or hardened, forming a protective layer over the gemstone.
Stabilization is often used on gemstones that are naturally porous or brittle, such as turquoise or kyanite. By stabilizing the gemstone, it can be made more durable and less susceptible to damage from scratches or impact.

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