Unavailable|$65,700
Australian 23.00ct Boulder Opal, Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
The chain pictured is supplied with the pendant (can be supplied with a different chain or without one, if required). SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 23.00...
Diamond, Opal, 18k Gold, Platinum
Unavailable|$339,900
Australian Boulder Opal, Pink Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 54.76ct Opal Origin: Winton, QLD, Australia Diamonds: 0.635ct D IF - F VVS Metals: 18K Solid Gold, Platinum
Pink Diamond, Opal, 18k Gold, Platinum
Unavailable|$104,000
Australian 8.24ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Just supply your size with your order and we will customise this especially for you in no time at all. SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 8.24ct Opal Origin: ...
Diamond, Opal, 18k Gold, Platinum
Studio Greytak 'Boulder Opal Earrings on Copper' Amethyst, Citrine, & Peridot
By Studio Greytak
Located in Missoula, MT
MATERIALS Boulder Opal Amethyst Citrine Peridot Copper Silver
Amethyst, Citrine, Opal, Peridot, Silver, Copper
Unavailable|$15,300
Natural Untreated Australian 4.34ct Boulder Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
"Today, Tomorrow, Always" presents a stunning and exquisite Australian opal gemstone. It carries a precious 4.34ct boulder opal hailing ethically from our Jundah-Opalville opal mines...
Opal, Black Opal, 18k Gold, Yellow Gold
Unavailable|$33,800
Natural Untreated Australian 20.69ct Boulder Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
The "Opal Nights" ring sparkles and shines, alternating between dark and mysterious and then light and playful hues. This beautiful 20.69ct boulder opal is elaborately decorated with...
Opal, Black Opal, 18k Gold, Yellow Gold
Unavailable|$84,000
Australian 6.35ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Just supply your size with your order and we will customise this especially for you in no time at all. SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 6.35ct Opal Origin: ...
Diamond, Opal, 18k Gold, Platinum
Unavailable|$33,000
Australian 6.95ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Set in solid 18K gold and accentuated with brilliant white diamonds set in platinum to bring out their luminance. SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 6.95ct Op...
Diamond, Opal, 18k Gold, Platinum
Unavailable|$59,000
6.66 Carat Boulder Opal, Diamond, 18K Gold & Platinum Collier Necklace
Located in MAIN BEACH, QLD
A technique that is only known by one European master goldsmith. The opal in this piece is a pinfire/palette flash patterned black boulder opal for the outback of Queensland, Austra...
Diamond, Opal, 18k Gold, Platinum
Unavailable|$31,900
Australian 9.18ct Boulder Opal, Diamond, 18K Gold and Platinum Ring
Located in MAIN BEACH, QLD
A stunning multi-patterned Black Boulder Opal, encrusted pavé set brilliant white diamonds, 18K solid gold and platinum 950.
Diamond, Opal, 18k Gold, Platinum
Australian 7.27ct Boulder Opal & 18k Gold Earrings with Detachable Diamond Studs
Located in MAIN BEACH, QLD
SPECIFICATIONS Opal Type: Black Boulder Opal Opal Weight: 7.27ct Diamonds: 0.40ct D IF - F VVS Metals: 18K solid Gold THE GRYFFIN OPAL DIFFERENCE By investing in solid Australian op...
Diamond, Opal, 18k Gold
Australian Natural Solid 2.59ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
A unique design displaying a stunning black boulder opal and high jewellery grade diamonds.
Opal, 18k Gold, Yellow Gold, Platinum
Unavailable|$12,247
Australian Bolder Opal Diamond Necklace 14 Karat Yellow Gold
Located in Barnsley, GB
Major opal fields in this area include Quilpie and Winton in central and west Queensland I Australian Boulder opals are the second most valuable type of opal (following black opal).
Diamond, Opal, Yellow Gold
Boulder Black Opal Diamond Two Tone Gold Slide Pendant
Located in South Pasadena, CA
Boulder black opal diamond two-tone gold slide pendant.
Diamond, Opal, Cultured Pearl, Black Opal, Gold, 18k Gold, White Gold, Y...
3.0 Carat Boulder Black Opal Arts and Crafts Ring
Located in Lexington, KY
3.0 carat Boulder Black Opal set in Arts & Crafts ring in 14K yellow gold Exceptional shoulders with leaf design!
Opal, 14k Gold, Yellow Gold
Sold|$11,475
7.23 Carat Black Opal Diamond Gold Cocktail Ring
Located in San Francisco, CA
18Kt Rose Gold ring features a 7.23-ct Oval shape Boulder Black Opal with blue & green Play of Color.
Brown Diamond, Opal, White Diamond, 18k Gold, Gold
Sold|$1,116 / set
Collection Boulder opal pendants with silver
Located in Delft, NL
Collection Boulder opal pendants with silver Nine small boulder Opal pendants with silver eyelets. Two round shapes, two triangular, of which the smaller one has a small chip. An el...
Opal
Boulder Opal Necklace Black Opal Beaded 22 Karat Gold 18 Karat Gold
By Jennifer Kalled
Located in Wolfeboro, NH
Boulder opal necklace on black opal beads & 18k gold beads.
Opal, 18k Gold, 22k Gold
GIA Certified Natural Black Boulder Opal Necklace 18 Karat
Located in New York, NY
Boulder Blues GIA Certified 21.02 x 19.09mm Natural Non treated Black Opal.
Opal, 14k Gold, Yellow Gold
Black Opal Beads Boulder Opal Pendant 22 Karat Gold 18 Karat Gold
By Jennifer Kalled
Located in Wolfeboro, NH
Boulder opals and black opals are not only beautiful, but each boulder opal is truly one of a kind.
Opal, 14k Gold, 18k Gold, 22k Gold
Black Opal Beaded Necklace with Boulder Opal in 22k Gold & 18k Gold
By Jennifer Kalled
Located in Wolfeboro, NH
Black opal & boulder opal necklace with 18k gold spacers.
Lapis Lazuli, Opal, 14k Gold, 18k Gold, 22k Gold
Natural 1.60ct Australian Black Boulder Opal 9k Yellow Gold Oval Signet Ring
By Gems and Jewels UK
Located in Birmingham, GB
Natural Australian Black Boulder Opal 9k Yellow Gold Signet Ring. A stunning 1.60 carat natural black opal with a beautiful blue and purple play of colour and an excellent oval cabo...
Opal, Black Opal, Gold, 9k Gold, Yellow Gold
11.88 Carat Australian Boulder Opal Diamond Platinum Pendant
Located in Beverly Hills, CA
A large and impressive, beautiful Australian opal! Having all the same traits and beauty of black opal but at a fraction of the price, this 11.88 carat boulder opal is a gem.
Diamond, Opal, Black Opal, Platinum
Boulder Opal Ivy Black Gold Ring Bright Blue Opalscent Gemstone Kingfisher Bird
By Alexey Gabilo
Located in Berlin, DE
Make memories last with this incredible custom-made natural boulder opal ring. Ivy ring with Blue Boulder Opal in black 14k gold opal origin - Australia opal measurements - 0.59 х...
Opal, Gold, 14k Gold
14.51 Carat Australian Boulder Opal Diamond Platinum Pendant
Located in Beverly Hills, CA
A true gem opal from Australia, this fine boulder opal rivals the best black opals at a fraction of the price.
Diamond, Opal, Platinum
Michael Kneebone Turquoise Zircon Boulder Opal Amazonite Dangle Earrings
By Michael Kneebone
Located in Austin, TX
Complimenting the turquoise are brilliant cut blue zircons (Myanmar), Boulder Opals (Boulder opal is one of the most valuable varieties of opal, second only to Australia's black opal.
Amazonite, Opal, Turquoise, Zircon, 18k Gold
Michael Kneebone Turquoise Zircon Boulder Opal Amazonite Dangle Earrings
By Michael Kneebone
Located in Austin, TX
Complimenting the turquoise are brilliant cut blue zircons (Myanmar), Boulder Opals (Boulder opal is one of the most valuable varieties of opal, second only to Australia's black opal.
Amazonite, Opal, Turquoise, Zircon, 18k Gold
Boulder Opal Necklace Black Jade Pearl Peridot Blue Zircon 22k 18k 14k Kalled
By Jennifer Kalled
Located in Wolfeboro, NH
Thus, the name for this piece "Hanging in the Balance" The boulder opal is very jumpy with greens, aquas, lavenders.
Jade, Opal, Natural Pearl, Peridot, Zircon, 14k Gold, 18k Gold, 22k Gold
Amazing Rainbow Color Boulder Opal Diamond Engagement Ring 18K Yellow Gold
Located in Suwanee, GA
Amazing Rainbow Color Australian Boulder Opal Diamond Engagement Ring 18K Yellow Gold. Free Domestic USPS First Class Shipping! Free Gift Bag or Box with every order! Opal—the qu...
Diamond, Opal, Black Opal, Yellow Gold
4.87 Carat Natural Australian Boulder Opal and Diamond Ring Made in Platinum
Located in Tokyo, JP
A beautiful ring featuring a 4.87 Carat, Natural, Australian Boulder Opal and 0.13 Carats of Diamond Accents set in Platinum. The Opal displays very good play of color! Opals are kno...
Diamond, Opal, Black Opal, Platinum
Estate Boulder Opal Ring with Diamonds in 18k Yellow Gold
Located in La Jolla, CA
Estate Boulder Opal Ring with Diamonds in 18k Yellow Gold Boulder Opal Ring features one Pear shaped Boulder Opal with color play of Blue, Green, and flashes of Orange accented wit...
Diamond, Opal, 18k Gold, Yellow Gold
14k Large 7.70ct Genuine Natural Black Opal Pendant with Tanzanite '#3350'
Located in Big Bend, WI
It features a large oval black boulder opal that weighs 7.70 carats, and a round tanzanite that weighs .81 carats.
Tanzanite, Black Opal
MODERNIST Studs Earrings In 14Kt Yellow Gold With Australian Opals And Black Jet
Located in Miami, FL
They are mounted with a gorgeous pair of natural boulder opals and two carved black jets stones. The earrings are fitted at the reverse with gold posts for pierced ears and butterfly...
Opal, Gold, Yellow Gold, 14k Gold
Boulder Black Opal Diamond White Gold Necklace
Located in South Pasadena, CA
Free form boulder black opal diamond and white gold necklace.
White Diamond, Opal, Diamond, 18k Gold, White Gold
Boulder Black Opal Diamond Platinum Cocktail Ring
Located in South Pasadena, CA
That is what it is all about, from our good taste to yours. Cheers! Boulder black opal diamond and platinum cocktail ring circa 1990.
Diamond, Opal, Black Opal, Platinum
Exceptional Boulder Black Opal 18K Yellow Gold Signet Ring
Located in Vilnius, Vilniaus apskr.
It features an oval shape natural boulder black opal which shows flashes of blue and green.
Opal, Black Opal, Yellow Gold
Tiffany & Co. Semi Black Boulder Opal Diamond Yellow Gold Pendant
By Tiffany & Co.
Located in South Pasadena, CA
Tiffany & Co semi-black boulder opal diamond and yellow gold pendant circa 1980.
Diamond, Opal, 18k Gold, Yellow Gold
Australian Black Boulder Opal & Diamond Dangle Earrings in 18 Karat Yellow Gold
Located in Sherman Oaks, CA
Each earring features a fiery dark Australian black opal boulder opal framed in a hand-finished 18 karat yellow gold nugget set off with a small (0.015 carat) but good quality natur...
Diamond, White Diamond, Opal, Black Opal, 18k Gold, Yellow Gold, Gold
Freeform Boulder Opal Shepherd's Hook Dangle Earrings in Yellow Gold
By Eytan Brandes
Located in Sherman Oaks, CA
Two fiery blue and green Australian boulder opals seem to drip from strands of gold to create a pair of beautiful earrings by Eytan Brandes. Each opal is roughly triangular in shape...
Opal, Black Opal, Gold, 14k Gold, Yellow Gold
Australian Boulder Opal Pendant on 18 Karat Gold Cable Chain
By Eytan Brandes
Located in Sherman Oaks, CA
Simple but completely unique, this roughly rectangular boulder opal flashes blue and green, plus tiny hints of lilac.
Opal, Black Opal, Gold, 18k Gold, Yellow Gold
Handcrafted One-of-a-kind 18kt Gold and Precious Black Boulder Opal Earrings
By Angelina Fine Jewelry
Located in Amsterdam, NH
A quietly understated pair of earrings with precious black opals suspended from a 18k gold coral branch motif. Gem quality black opals are hard to find in matching pairs, and a pair...
Opal, Gold, 18k Gold
Michael Kneebone Turquoise Zircon Boulder Opal Amazonite Dangle Earrings
By Michael Kneebone
Located in Austin, TX
Complimenting the turquoise are brilliant cut blue zircons (Myanmar), Boulder Opals (Boulder opal is one of the most valuable varieties of opal, second only to Australia's black opal.
Amazonite, Opal, Turquoise, Zircon, 18k Gold
Boulder Opal Pendant Necklace with Diamond Accent in Rose Gold
By Eytan Brandes
Located in Sherman Oaks, CA
Eytan Brandes made this 14 karat rose gold pendant to show off a great little boulder opal he bought from an Australian dealer several years ago. With a great range of colors, all...
Diamond, White Diamond, Opal, Black Opal, Gold, 14k Gold, Rose Gold
2.31 Carat Boulder Opal and Diamond Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
NOTE *Boulder opals are the second most valuable type of opal (following black opal).
Diamond, Opal, 18k Gold, Yellow Gold
Vintage Boulder Opal, 1.52 Carat Sapphire and 1.28 Carat Diamond Pendant
Located in Jesmond, Newcastle Upon Tyne
NOTE *Boulder opals are the second most valuable type of opal (following black opal).
Diamond, Opal, Sapphire, 18k Gold, Yellow Gold
Sold|$1,600
Black Opal 18 Karat Pendant, 20th Century
Located in Toronto, ON
Fine Black Opal Pendant custom 18K mount. The abstract free form black boulder opal, gauging approximately 25.00 x 20.05 x 3.30 mm, free shape undulating surface, broad ribbon flash,...
Opal, 18k Gold
Black Opal Doublet and Diamond Ring on Wide 18 Karat Multi-Strand Band
Located in Sherman Oaks, CA
Eytan Brandes designed, sculpted, set and finished this one-of-a-kind 18 karat gold ring specifically for its centerpiece -- a vivid green and blue Australian black opal boulder doub...
Opal, 18k Gold, Yellow Gold
Australian Boulder Opal 13mm Round Beaded Stretch Bracelet
Located in Tucson, AZ
Dazzling natural Australian Boulder opal 13mm stretch bracelet made with natural boulder opal beads. Handcrafted in the USA by Rocat Designs. The Boulder opal beads are stunning with...
Opal
Black Australian Boulder Opal East West 14 Karat Gold Signet Ring
Located in Crownsville, MD
Lovely modern Australian black boulder opal east west signet ring in 14K yellow gold.
Opal, Gold, 14k Gold
Sold|$3,410 / set
Australian 1.91ct Boulder Opals Earrings in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
“Maybe Forever” presents multicoloured Winton boulder opals (1.91ct) with deep contrasting colours set in buttery 18K yellow gold. Precious and perfect, this is a piece to be cherish...
Opal, Black Opal, 18k Gold, Yellow Gold
Australian 7.00ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
This amazing blue-green black boulder opal is of clean, vivid colour, set in an 18K solid gold and platinum ring with high jewellery grade diamonds.
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 6.33ct Boulder Opal Pendant Necklace in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
A wonderfully crafted and sophisticated design, the "Shaila" black opal pendant is breathtaking with a bold blue-green play-of-colour. Featuring an alluring black opal (5.48ct) haili...
Opal, Black Opal, 18k Gold, Yellow Gold
Harlequin Boulder Opal, Diamond, 18K Gold & Platinum Necklace & Brooch
Located in MAIN BEACH, QLD
The Harlequin pattern black boulder opal in this setting is fit for a queen, with over 12ct of black boulder opal with the predominant colour of red, the most prized of all colours i...
Diamond, Opal, 18k Gold, Platinum
Natural Untreated Australian 2.35ct Boulder Opal Engagement Ring 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
Stunningly exquisite, this "Anna" opal engagement ring features a boulder opal (2.35ct) sourced from Koroit, Australia. Set in the classic 18K yellow gold and cradled in stunning dia...
Opal, Black Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 20.69ct Boulder Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
The "Opal Nights" ring sparkles and shines, alternating between dark and mysterious and then light and playful hues. This beautiful 20.69ct boulder opal is elaborately decorated with...
Opal, Black Opal, 18k Gold, Yellow Gold
Natural Australian 3.43 Ct Boulder Opal Pendant Necklace in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
Mysterious and ravishing is the wearer of the 'Sonata' opal pendant set in graceful 18K gold and is ethically sourced from Jundah-Opalville, Opal Minded's own mines. The piece featur...
Diamond, Opal, Black Opal, Yellow Gold
GIA Certified 6.52 Carat Natural Boulder Fire Opal with Matrix Platinum Ring
Located in LA, CA
Platinum 10.44gm Natural Boulder Black Fire opal with matrix 6.52ct Natural Diamonds 0.12ct VVS Clarity EF Color GIA #2215138443
White Diamond, Fire Opal, Platinum
Opals were discovered in 400 BC, and since then five types have been found throughout the world. Before you start shopping for mysteriously beautiful vintage opal rings and other opal jewelry, learn about the different varieties of the gem — and find out which historical figure was reportedly willing to trade his kingdom for a single stone.
Here is a little riddle for you: the month of October has two birthstones, but only one of them encompasses the colors of other birthstones. If you guessed opal, you’re right! (The other gemstone associated with the month of October is tourmaline.)
Opals are such unusual gemstones that there are too many old-wives tales associated with them, like if you’re a blond, wearing an opal necklace will protect your locks from losing color. Opals were also very fashionable in the early 19th century, up until the publication of Sir Walter Scott’s novel Anne of Geierstein in 1829. The title heroine wears an opal and succumbs to an untimely death. However, the British monarchy, and in particular Queen Victoria, did not let this story get in their way, and they frequently gifted opals to friends and family members. October babies should disregard the noise and proudly wear their opals!
There are five types of precious opals: boulder opal, fire opal, crystal/water opal, black opal, and white/light opal. Each variety is distinguished by its color.
So, where does the name come from? The word opal is thought to originate from the Roman opalus or from the Sanskrit úpala (“precious stone”) or from the Greek opallios (“to see a color change”). So while there have been many names for the stones, opals were first discovered in 400 BC in Ethiopia. But the early reference that comes up most often in history books is from the Roman philosopher Pliny the Elder, who wrote about it in 75 AD. In his text he refers to it as opali. The Romans were big fans of opal, Mark Antony was so enamored by it that, as the story goes, he was willing to trade a portion of his kingdom for a single opal.
There's a wide variety of antique and vintage opal jewelry on 1stDibs (and you won't have to trade your kingdom for it).