#opal
Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence), common opal does not. Play-of-color is defined as "a pseudochromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light." The internal structure of precious opal causes it to diffract light, resulting in play-of-color. Depending on the conditions in which it formed, opal may be transparent, translucent or opaque and the background color may be white, black or nearly any color of the visual spectrum. Black opal is considered to be the rarest, whereas white, gray and green are the most common.

List of Pinterest Opal images & Opal pictures

List of all Pinterest Opal images and pictures. Browse Pinterest Opal ideas

Blind and deaf opal plays fetch
Blind and deaf opal plays fetch
Blind and deaf opal plays fetch
Merlinite Bracelet: Stone of Magic, Increase Intuition, Opal Bracelet, Mediumship. 10 to 12 mm, Large Merlinite, Crystal Healing, Boho, #734
Merlinite Bracelet: Stone of Magic, Increase Intuition, Opal Bracelet, Mediumship. 10 to 12 mm, Large Merlinite, Crystal Healing, Boho, #734
Merlinite Bracelet: Stone of Magic Increase Intuition Opal | Etsy
Opal necklace, Opal cloud necklace, White Opal necklace, Opal jewelry, White cotton candy cloud, fluffy cloud Silver Gold children necklace
Opal necklace, Opal cloud necklace, White Opal necklace, Opal jewelry, White cotton candy cloud, fluffy cloud Silver Gold children necklace
@western_opals on Instagram: “The pink tones in this opal are out of this world! 💗🔥 #canteraopal #mexicanopal #pink #crystals”
@western_opals on Instagram: “The pink tones in this opal are out of this world! 💗🔥 #canteraopal #mexicanopal #pink #crystals”
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Hello everyone! Finally, the time to reveal our newest shiny precious stone is here. Today I'd like to share with you my rendition of the wonderful Dragon's Breath Fire Opal, suggested by se...
Hello everyone! Finally, the time to reveal our newest shiny precious stone is here. Today I'd like to share with you my rendition of the wonderful Dragon's Breath Fire Opal, suggested by se...
Fire Opal Crescent Moon Ring
Fire Opal Crescent Moon Ring
Blue Fire Opal Moon Ring – TerraSoleil
40 Popular Beautiful Jewelrys You Have to Try 51 Beautiful Jewerly Ideas for Women #jewerlydesigns The post 40 Popular Beautiful Jewelrys You Have to Try appeared first on Jewelry Diy.
40 Popular Beautiful Jewelrys You Have to Try 51 Beautiful Jewerly Ideas for Women #jewerlydesigns The post 40 Popular Beautiful Jewelrys You Have to Try appeared first on Jewelry Diy.
E A R T H S | E N E R G Y on Instagram: “Beautiful Opals 😯🔮😍🌈 Follow 👉 @earths.energy . credit @amarisland . . . . . . . . .  #bohemiandecor #interior_design #bohemianchic…”
E A R T H S | E N E R G Y on Instagram: “Beautiful Opals 😯🔮😍🌈 Follow 👉 @earths.energy . credit @amarisland . . . . . . . . . #bohemiandecor #interior_design #bohemianchic…”
14kt Gold Opal and Sapphire Fleur de Coeur Ring
14kt Gold Opal and Sapphire Fleur de Coeur Ring
14kt Gold Opal and Sapphire Fleur de Coeur Ring
Opal Eternity Band, Rose Gold Opal Ring, Eternity Wedding Band, Thin Opal Wedding Ring, 2mm Opal Ban
Opal Eternity Band, Rose Gold Opal Ring, Eternity Wedding Band, Thin Opal Wedding Ring, 2mm Opal Ban
Opal Eternity Band, Rose Gold Opal Ring, Eternity Wedding Band, Thin Opal Wedding Ring, 2mm Opal Ban
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Geology: Fire Opal
Geology: Fire Opal
People say this fire opal looks like a Dinosaur egg 🐉🥚. SEE MORE >
Details about 1.01 Carat Australian Black Opal Engagement Ring 37 Diamonds 18K Yellow Gold
Details about 1.01 Carat Australian Black Opal Engagement Ring 37 Diamonds 18K Yellow Gold
Size 6.25. Free Gift Bag/Box with every order! Every Opal piece is Unique. You won't find two exactly identical opal gems because of their unrepeatable play-of-color. Being worn frequently can help opal to acquire the necessary humidity from the air as well as from the skin. | eBay! #designerjewelry
Starburst Opal Ring
Starburst Opal Ring
Starburst Opal Ring
Planet earrings pointed with OPAL, Space opal earrings, Saturn opal Gemstone earrings
Planet earrings pointed with OPAL, Space opal earrings, Saturn opal Gemstone earrings
Planet earrings pointed with OPAL, Space opal earrings, Saturn opal Gemstone earrings
Opal resin imitation rings for women wedding band engagement birthstone boho promise resin jewelry unique bands ring rainbow
Opal resin imitation rings for women wedding band engagement birthstone boho promise resin jewelry unique bands ring rainbow
Opal ring ocean wedding summer rings mermaid for women beach sea iridescent holographic eco resin statement
White Opal Bracelet, Tiny Opal Dot Bracelet, simple dainty coin/circle silver bracelet, minimalist horizontal bar bracelet, opal jewelry
White Opal Bracelet, Tiny Opal Dot Bracelet, simple dainty coin/circle silver bracelet, minimalist horizontal bar bracelet, opal jewelry
I know that this isn't a chocked but it's a cute bracelet #jewelrybracelets
Virant opal rose gold ring
Virant opal rose gold ring
Virant opal rose gold ring #jewelry #rings
Fire Opal Heart Rings - Just $29.95 USD! ★★★★★ (5/5)
Fire Opal Heart Rings - Just $29.95 USD! ★★★★★ (5/5)
Unique Opal Ring, Custom Uncut Opal Engagement Ring, Lotus Flower Ring in Rose Gold, Raw Rough Fire Opal Jewelry for Women, Birthstone Rings
Unique Opal Ring, Custom Uncut Opal Engagement Ring, Lotus Flower Ring in Rose Gold, Raw Rough Fire Opal Jewelry for Women, Birthstone Rings
Unique Opal Ring Custom Uncut Opal Engagement Ring Lotus | Etsy
Ten opals of the world poster a4 size
Ten opals of the world poster a4 size
TEN OPALS OF THE WORLD POSTER A4 SIZE opals of the world , opal posters
Details about Simple Marquise Cut Australian Solid Opal Ring 925 Sterling Silver Rainbow Color
Details about Simple Marquise Cut Australian Solid Opal Ring 925 Sterling Silver Rainbow Color
Oval Australian Rainbow Doublet Black Opal Engagement Ring 18k Yellow Gold with Beautiful Play-of-Color. Size 6.5. Free Gift Box with Every Opal Order! Natural Australian Doublet Opal, 0.78 ct. Every Opal piece is Unique. | eBay!
#Opal – Famous for its internal glowing color, which takes on myriad hues and shades, rather like smoldering flames in a block of ice. #EyeCandy #OpalRock #OpalJewelry ✨
#Opal – Famous for its internal glowing color, which takes on myriad hues and shades, rather like smoldering flames in a block of ice. #EyeCandy #OpalRock #OpalJewelry ✨
Introduction to the Different Types of Australian Opal
Introduction to the Different Types of Australian Opal
Did you know that 90% of the worlds Opal is found in Australia? You also might not realise that depending on which Opal mine you are at you will find very different types of Australian Opal. You can find black Opal in New South Wales, white Opal in Queensland and boulder and matrix Opal in South Australia and Queensland.
A lovely Boulder Opal split....Bill Kasso                                                                                                                                                                                 More
A lovely Boulder Opal split....Bill Kasso More