Cat's Eye Chrysoberyl and Diamond Ring
A cat's eye chrysoberyl and diamond ring, the oval-shaped cat's eye cabochon weighing 6.33 carats, of yellowish green hue, set within a cluster or round brilliant and tapered baguette-cut diamonds, diamonds approximately 0.80 carat total, mounted in platinum, ring size L . Accompanied by report from the Gem Studies Laboratory (GSL), Australia, stating that the cat's eye chrysoberyl is natural. Report number AA53803, dated 10 September 2014
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- Cabochon Cut in Jewellery - A cabochon cut is a type of gemstone cutting where the stone is cut and polished in a convex shape with a flat bottom and a domed top, with no facets. This type of cut is typically used for opaque or translucent stones that have natural patterns or inclusions that are best displayed in this type of cut. Examples of stones that are often cut as cabochons include turquoise, opal, and moonstone.
- Chrysoberyl - Chrysoberyl is a mineral species that includes two common varieties: ordinary chrysoberyl and cat's eye chrysoberyl (also known as cymophane). The mineral is typically yellowish-green in color, but can also be brown, gray, or nearly colorless. It is often used as a gemstone, with the cat's eye variety being particularly prized for its chatoyancy (a reflective effect that resembles the slit eye of a cat). Chrysoberyl is relatively hard and durable, making it suitable for use in jewellery.
- Carat - A carat (abbreviated "ct") is a unit of measurement used to describe the weight of a diamond or other gemstone, and separately is a unit of measurement used to describe the weight of precious metals such as gold,.
For gemstones, one carat is equal to 0.2 grams or 200 milligrams. The weight of a diamond is one of the Four Cs (along with cut, colour, and clarity) that are used to determine a diamond's value.
It is important to note that a diamond's weight does not necessarily correspond to its size. A diamond's cut, which affects how well it reflects light, can make a diamond of a lower weight appear larger than a diamond of a higher weight. Additionally, the carat is not the only factor to determine the value of a diamond, other factors such as clarity, colour and cut are important too.
In the gold industry, the purity of gold is measured in carats (abbreviated "ct"), with 24 karats being pure gold and lower carat numbers indicating a lower purity level. So, for example, 18 carat gold is 18/24 or 75% pure gold, and 12 carat gold is 12/24 or 50% pure gold.
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