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Por Revisado por Andreas Zabczyk

The Fire Opal of Mexico

The Fire Opal of Mexico is a stunning and vibrant gemstone known for its fiery hues, ranging from bright oranges to deep reds. Renowned for its exceptional clarity and brilliance, the Mexican fire opal is considered one of the most striking varieties of opal in the world. This unique gem is primarily found in the volcanic regions of Mexico, where it forms in areas rich with natural deposits. Unlike other opals, which are known for their play-of-color, fire opals are most celebrated for their vivid, translucent to transparent colors that can often resemble flames. Explore our range of loose Mexican fire opal for sale.

Natural Mexican Fire Opal from GemSelect
Natural Mexican Fire Opal from GemSelect

All of the opals have a variety of gemstone characteristics which are, let us say, less than ideal. These include softness, a tendency to dehydrate and crack, physical weakness and sensitivity to heat and chemicals. They are the most delicate gemstones that are commonly worn. But despite these shortcomings, they continue to be very popular because of their unique color.

The traditional precious opal, with its unique play of color, has been valued since ancient Roman times. During the Middle Ages, precious opal was regarded as especially lucky because it displayed the colors of many different gemstones. Not every culture has had the same view, however. A well-known Russian superstition associates precious opal with the evil eye.

Buy Orange Fire Opal from GemSelectRecently there has been a growing interest in one of the lesser known opals, the so-called Mexican fire opal. This is an opal known not for its play of color, but for its vivid body color, which can be white to yellow, orange or red.

Yellow Fire Opal from MexicoLike all opals, Mexican fire opal stone is amorphous hydrous silicon dioxide. "Amorphous" indicates that opal has no definite crystal structure; "hydrous" means that it contains water; typically between 3 and 10 percent. Therefore, opal is considered to be a kind of hardened jelly. Fire opal has some unusual characteristics that are not shared by other opal varieties.

Opal is typically opaque and is usually cut en cabochon. Fire opal, also known as Mexican opal, is the only kind of opal that can be transparent to translucent, and higher-grade material is often faceted. People seeing these gems for the first time are often surprised to find out that they are opals.

Buy yellow Fire Opal at GemSelectThe color range of Mexican fire opal stone can be quite wide, and some pieces display various colors in a single stone. Brilliant sunny yellow is highly regarded, but more saturated orange and orange-red colors are especially valuable. Feel free to browse through our comprehensive collection of fire opal for sale.

Fire opal is associated particularly with Mexico and is mined in the Mexican states of Queretaro, Hidalgo, Guerrero, Michoacan, Julisio, Chihuahua and San Luis Potosi. The most important mines in Queretaro were discovered in 1835 and are still producing today. Small quantities of fire opal can also be found in Oregon, USA and British Columbia, Canada.

Natural Orange Fire OpalA small new deposit of fire opal has recently been found in the northeastern area of Brazil. This area produces a golden variety of fire opal that can resemble hessonite garnet or hyacinth zircon. It also produces the more traditional colors of red, orange and yellow.

Since fire opal has a high water content, it should be protected from heat and prolonged exposure to direct light, which could dry it out. Lapidaries cure fire opal by drying it before cutting to reduce instability, so that it is not overly delicate. However, due to its relative softness (5.5 to 6.5 on the Mohs scale), it is best suited for pendants, earrings and brooches, rather than rings.

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