Opal is one of the most amazing gems, famous for its unique play of colors and the variety it offers. Opals have fascinated civilizations for centuries, with each type reflecting different hues and patterns, making it one of the most sought-after gems in the world.
Types of Opal Gemstones
Type of Opal | Origin | Colors |
Black Opal | Australia | Blue, Green, Red |
White Opal | Australia | White, Milky |
Fire Opal | Mexico | Orange, Red |
Boulder Opal | Australia | Blue, Green, Red |
Crystal Opal | Ethiopia, Australia | Colorless, with vibrant play of color |
Ethiopian Opal | Ethiopia | White, Yellow, Orange |
Common Opal | Worldwide | White, Green, Pink |
Types and Origins of Opal Gemstones
Black Opals

Black opal is renowned for their dramatic dark color. They were first found in the early 1900s and are mostly on Lightning Ridge, Australia. From deep blue to bright green and fiery red are their colors. Because these play of colors are unique and vibrant, these opals are the rarest and most valuable of all kinds.
White opals

The white opals come from Andamooka and Coober Pedy, Australia where they were discovered in 1915. Black opals are more prized than these opals, which have a soft milky look and see less of a play of colors. Because they have gentle shades and decent prices they are very popular for the jewelry.
Fire Opal

Mostly found in Mexico, Fire opals have been appreciated for thousands of years. According to the Aztecs, these stones held the sun’s energy. They get their name from the warm colours ranging from yellow, through orange to red. Fire opals are cut with facets instead of cabochons; unlike other opals they can be transparent or translucent.
Boulder Opal

Although boulder opals were first discovered as late as the 19th century in Queensland, Australia. Because ironstone is such a special variety of these opals, they are unique and have a unique, rugged charm. Their black opal like colors were immediately popular upon their discovery in the 1870s, and became an important discovery in the gemstone market.
Crystal opals

One of the most beautiful opal types made from clear body and vivid colors, crystal opals. From Ethiopia and Australia including Welo and Coober Pedy, these opals are especially well known for their transparency with brilliant flashes of color. They were discovered fairly recently and are very much sought by collectors and jewelers.
Ethiopian Opal

In the 1990s Ethiopian opals were made famous when large deposits were found in areas such as Welo and Shewa. The colours in these opals are very rich and very vivid in clear or translucent stones. They too are stable and therefore a desirable option for jewelry.
Common opals

Common opals lack a play of color; only precious opals display a play of color. In any case, these opals are used in jewelry the worldwide, and have been for centuries now. They have a smooth, waxy surface in soft colors (white, pink, green).
History and Significance of Opals
Opals have a rich history spanning thousands of years. The name “opal” is said to come from the Sanskrit word “Upala”, which means “precious stone”, and later from the Greek term “Opallios”, which means “to see a change of color”. Opals were highly valued by ancient civilizations such as the Romans, who considered them a symbol of purity and hope.
The history of opal mining dates back to prehistoric times, with evidence of the use of opal found in ancient artifacts. However, it was not until the discovery of large opal deposits in Australia in the late 19th and early 20th centuries that opal gained popularity. Australia is still the largest producer of opal in the world, with about 95% of the world’s opal supply coming from the country.
Opals are valued not only for their beauty, but also for the mystical properties attributed to them. In the middle Ages, opals were believed to bring good luck and were often associated with eyes because of their iridescent appearance. Some cultures considered the opal a symbol of loyalty and security, while others believed it could ward off evil spirits.
Why Opals Are Valuable
Opals are unique among gemstones because of their ability to refract light, resulting in a fascinating play of colors. This optical phenomenon, known as “color play”, occurs when light passes through spheres of silica in the opal, creating flashes of color on the surface of the stone. The value of the opal is determined by its body color, color scheme and general appearance.
The most valuable opal are those with a dark body (such as black opal), which provide a wonderful contrast to the vivid colors displayed. In addition, the pattern, luster and color distribution in the stone also significantly affect its value. Opal with a bright and uniform play of colors and a pleasing pattern are highly sought after by collectors and jewelry enthusiasts.