Pictures of Opal - Black, Fire, Boulder, Blue and Pink - Geology.com
WEBColor. Commonly having a bodycolor of white, yellow, gray, black, or brown; however, the bodycolor of opal can be any color. Some of the most beautiful common opals are red, orange, pink, green,or blue. The play-of-color of precious opal displays spectral colors of red, orange, yellow, green, blue, and violet. Streak.
Common Opal Can Be Pink, Blue, Green, Yellow, Purple, Orange
WEBApr 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.
Precious Opal and Play-of-Color - Geology.com
WEBPlay-of-color is the familiar flash of bright colorful light that a person sees when viewing opal. Black opal, white opal, crystal opal, boulder opal, and matrix opal are all varieties of "precious opal".
Fire Opal - Pictures and Definition of Fire Opal - Geology.com
WEBFaceted 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.
Birthstones by Month: Chart and Photos - Geology.com
WEBEmerald (May), opal (October), peridot (August), and zircon (December) are all prone to breakage. Moonstone (June), topaz (November), and tanzanite (December) all have perfect cleavage and will break easily. Pearl (June), opal (October), and turquoise (December) all have a low hardness and are easily scratched.
Ethiopian Opals - Precious, Fire and Common Opal - Geology.com
WEBThese 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.
Synthetic Opal - Also Known as Lab-Created Opal - Geology.com
WEBAug 13, 2019 · Synthetic Opal Color Samples: A sample card displaying a collection of synthetic opal cabochons of various colors. This collection clearly illustrates the abilities of a synthetic opal manufacturer.
Opalite vs. Opal: What is the difference? - Geology.com
WEBAn experienced gemologist or a gem identification laboratory can tell the difference between common opal, imitation opal, and synthetic opal (a man-made material that has the same chemical composition and physical properties as natural opal).
Tiger's-Eye Gemstones | Tiger Eye Beads, Jewelry, Tumbled Stones
WEBMost tiger's-eye used as a gemstone is brown in color. A similar material with a gray-blue color is known as "hawk's-eye." Red, blue, and green tiger's-eye are often sold as finished stones. These colored stones are usually treated with heat or dye.
Black Opal or Dark Opal - Pictures of Black Opal or Dark Opal
WEBWhat is Black Opal? "Black opal" is a term used for opal that has a dark bodycolor, often black or dark gray. The term is also used for opal that has a dark blue or dark green bodycolor. The dark bodycolor often makes the fire of black opal more obvious.