For the gal who likes to stand out, try a gem of a different color - two different colors, in fact! This emerald shaped ametrine is here to blend into your blithesome looks with ease. Swirls of diamonds accompany the center stone on the 14K yellow gold shank.
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All weights pertaining to gemstones, including diamonds, are minimum weights. Additionally, please note that many gemstones are treated to enhance their beauty. View Gemstone Enhancements and Special Care Requirements for important information.
By far the most common color of gold used in jewelry, yellow gold is gold in its natural shade. Yellow gold is usually alloyed with copper and silver to increase the strength of the metal. How yellow the metal is depends upon the content of gold. A 14-karat piece of jewelry will have a brighter yellow hue than a 10-karat piece. Likewise, an 18-karat piece of jewelry will have a deeper yellow than 14-karat gold, and so on.
Gold's softness and malleability make it a wonderful metal to work with when creating virtually any design in jewelry. But this softness can be a drawback as well. To make it stronger and more durable, gold is usually alloyed, or mixed, with other metals such as copper or silver. The higher a metal's percentage of gold content, the softer and more yellow the jewelry piece. The karat weight system used to measure gold in a piece is the same for all hues, including white and yellow gold.
The word “carat” is Arabic, meaning “bean seed.” This is because historically seeds were used to measure weights of gold and precious stones. In the United States, “karat” with a “k” is used to measure gold's purity, while “carat” with a “c” is used in measuring a gemstone's size. The karat mark of gold represents the percentage of pure gold to alloy.
In order to determine the karat weight of a specific item, simply look for the quality mark. Jewelry items will bear the stamp of their karatage based upon the United States or European system of marking. The United States system designates pieces by their karats—24K, 18K, 14K, 10K, etc. The European system designates pieces by their percentage of gold content. For instance, 10K gold is marked “417,” denoting 41.7% gold; 14K is marked “585,” denoting 58.5% gold; and 18K is marked “750,” denoting 75% gold; etc.
Ametrine is a variety of quartz that exhibits the best aspects of both purple amethyst and yellow citrine within the same crystal. These bicolor yellow and purple quartz gemstones have a hardness of 7.0 on the Mohs Scale and are ideally suited for a variety of jewelry uses.
Ametrine is most typically faceted in a rectangular shape with a 50/50 pairing of amethyst and citrine. When cut into emerald and pear shapes, the color distinction is most notable. Sometimes a checkerboard pattern of facets is added to the top to increase light reflection. Ametrine can also be cut to blend the two colors so that the resulting stone is a mix of yellow, purple and peach tones throughout the stone. When ametrine is fashioned as the less-common brilliant round shape, its colors reflect and blend together to create the peach-like color.
Ametrine is especially popular among artistic cutters and carvers who can play with the colors, creating landscapes in the stone. Amethyst's purple and citrine's yellow are opposite each other on the color wheel. They are called complementary colors, meaning that they enhance each other, and are considered by artists to be excellent colors to use together. Because its beauty lies in the coexistence of the two colors, ametrine is usually recovered in larger sizes; over five carats is most popular, which allows for the appreciation of the pronounced color contrast.
The Anahi Mine in Bolivia is the major world producer of ametrine. The mine first became famous in the seventeenth century when a Spanish conquistador received it as a dowry upon marrying a princess from the Ayoreos tribe, named Anahi. Ametrine was introduced to Europe through the conquistador's gifts to the Spanish queen. The stone is relatively inexpensive, considering that it comes from only a few mines in the world, including Bolivia and Brazil. Several suppliers have indicated that the ametrine mines have run out, and therefore quality material is now very difficult to obtain.
As a newcomer, ametrine does not yet have folklore or historical significance attached to it, as do amethyst and citrine. Some sources believe, however, that the best aspects of amethyst and citrine lore should be attributed to ametrine since it is a combination of both gems.