"Fire Opal" is a term used for colorful, transparent to translucent opal that has a bright fire-like background color of yellow, orange or red. It may or may not exhibit "play-of-color." The color of fire opal can be as vivid as seen in the three stones shown here.

Faceted Fire Opal: These three stones show the color range of "fire opal," a name given to specimens of opal with a fiery background color. The orange and yellow stones have a sleepy translucence, while the red stone is semitranslucent, almost opaque.

Aug 13, 2019 · Synthetic opal is a man-made material that has the same chemical composition, physical properties and appearance of natural opal.

Aug 10, 2017 · "Fire opal" is a term used for a colorful, translucent to transparent opal with a background color that is a fire-like hue of yellow to orange to red. A piece of yellow faceted Nevada fire opal is shown on this page.

These are now producing beautiful precious opal, fire opal, and black opal with spectacular play-of-color in a variety of patterns and body colors. Ethiopian opals are not only beautiful, but they generally cost less than similar-quality opal from Australia.

Apr 3, 2019 · A spectrum of common opal colors: Pink opal from Peru; yellow and orangy opal from Australia and Nevada; green opal from Peru and Kenya; Blue opal from Oregon and Peru; purple opal from Mexico. The common opals above have been used to make beautiful beads, cabochons and tumbled stones.

The dark bodycolor often makes the fire of black opal more obvious. This contrast of fire color to bodycolor makes black opals very desirable and sell for high prices. One of the specimens shown on this page is a solid black opal with a strong blue face-up color play.

Fire Opal: A faceted orange fire opal from Oregon. This stone weighs 1.17 carats and is 9mm x 7mm in size. Fire opal in a range of colors from yellow through orange and red is produced from several mines on the eastern side of the Oregon Cascades.

What is a Pinfire Opal? "Pinfire opal" is a name used for opal that has pinpoints of fire throughout the stone. In the accompanying image, the white opal on the left is a pinfire opal cut from material mined at Coober Pedy, Australia. The black opal on the right is a pinfire opal from the Constellation Mine in Spencer, Idaho.

Play-of-Color in Opal: White light enters an opal, interacts with the tiny silica spheres that make up its internal structure, is diffracted into its component colors, and exits the opal in a flash of spectral colors.