18k Opal
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18K Opal Diamond Halo Ring
By Rose and Choc
Located in Wallingford, CT
Oval Australian opal set in diamonds
Metal: 18K Yellow Gold
Stone: Australian Opal
Stone Shape
Category
2010s American Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold
Italian 18k Opal Brown Diamonds Rose Elegant Gold Ring for Her
By Natkina
Located in Montreux, CH
Ring Rose Gold 18 K (Matching Necklace and Earrings Available)
Diamond Brown 1,08 ct
Opal
Weight 5
Category
2010s Fashion Rings
Materials
Diamond, Opal, Rose Gold
Italian Breathtaking 18k Opal Brown Diamonds Rose Gold Pendant Necklace for Her
By Natkina
Located in Montreux, CH
Necklace Rose Gold 18 K (Matching Ring and Earrings Available)
Diamond Brown 1,08 ct
Opal
Weight
Category
2010s Drop Necklaces
Materials
Diamond, Opal, Rose Gold
Italian Lever-Back 18k Opal Diamonds Brown Rose Gold Earrings for Her
By Natkina
Located in Montreux, CH
Earrings Rose Gold 18 K (Matching Ring and Necklace Available)
Diamond Brown 2,09 ct
Opal
Weight 9
Category
2010s Lever-Back Earrings
Materials
Diamond, Opal, Rose Gold
Italian Modern 18k Opal London Blue Topaz Rose Gold Ring for Her
By Natkina
Located in Montreux, CH
Ring Rose Gold 18 K
London blue topaz 4,79ct
Opal
Weight 5 grams
Different Sizes Available
With
Category
2010s Fashion Rings
Materials
Topaz, Blue Topaz, Opal, Rose Gold
Opal Diamond Onyx Earrings
Located in Bad Kissingen, DE
18 k white gold
hallmarked with fineness 18 k
opal 6,60 ct
1.21 ct diamonds
onyx
Größe approx. 25 x
Category
21st Century and Contemporary German Stud Earrings
Materials
Diamond, Onyx, Opal, 18k Gold
Gabrielle Sanchez Moonstone 18 Karat Pendant on Leather
By Gabrielle Sanchez
Located in new york, NY
50x37x10mm thick faceted moonstone teardrop 18K double seed setting pendant w/18k opal bead bail on
Category
2010s American Artisan Pendant Necklaces
Materials
Moonstone, 18k Gold
18K Art Deco Black Opal Ring
Located in Hummelstown, PA
iridescent blues, Sunkist orange and neon greens. Masterfully hand fabricated in 18K white gold, the opal is
Category
Vintage 1920s Art Deco Cocktail Rings
Materials
Black Opal, 18k Gold
18k Yellow Gold Rough Diamond Beaded Necklace With Hand-carved Amber Bee
By Angelina Fine Jewelry
Located in Amsterdam, NH
a 18k yellow gold clasp.
Handmade 18k opal and diamond earrings are also available on this site.
Category
2010s Dutch Artisan Beaded Necklaces
Materials
Amber, Diamond, 18k Gold
Natural Australian 7.43ct Boulder Opal and Diamond Cocktail Ring 18k Yellow Gold
By Opal Minded
Located in Sydney, AU
)
Setting length: 67.37mm
Metal: 18K Yellow Gold
This opal ring arrives in a gun-metal aluminium box
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, Black Opal, Diamond, Gold, 18k Gold, Yellow Gold
Natural Australian 10.97ct Black Opal and Diamonds Cocktail Ring 18K Yellow Gold
By Opal Minded
Located in Sydney, AU
: 22.72mm
Setting width: 15.92mm
Metal:
18K Yellow Gold
This opal ring arrives in a gun-metal aluminium
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, Black Opal, Gold, 18k Gold, Yellow Gold
Opal Diamond 18 K Pendant Clip
Located in Bad Kissingen, DE
18 k yellow gold
hallmarked 750
6,84 ct opal
0,90 ct diamonds
weight 9,6 gram
size 40 x 20 mm
Category
21st Century and Contemporary German Pendant Necklaces
Materials
18k Gold
Convertible Necklace Faced Opal Malaquite Natural Pearls Tourmaline 18 k Gold
By Giulia Colussi
Located in Milan, IT
Convertible Necklace Faced Opal Malaquite Natural Pearls Tourmaline 18 k Gold gr
You can ware this
Category
2010s Italian Artisan Chain Necklaces
Materials
Malachite, Opal, Natural Pearl, Tourmaline, 18k Gold
Natural Untreated Australian 8.72ct Boulder Opal Earrings in 18 K Yellow Gold
By Renata Bernard
Located in Sydney, AU
width: 12.11mm
Opal thickness: 4.39mm
Metal: 18K yellow gold
These opal earrings arrive in a gun
Category
2010s Australian Contemporary Dangle Earrings
Materials
Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.61 in W 0.48 in
Bochic “Capri” Opal & Ruby Cocktail Ring Set In 18 K Gold & Silver
Located in New York, NY
Bochic “Capri” Opal & Ruby Cocktail Ring Set In 18 K Gold & Silver
White Natural Opal, Pear Shape
Category
21st Century and Contemporary Thai Belle Époque Cocktail Rings
Materials
Opal, Ruby, Gold, Gold Plate, Silver
Opal Studs 18K Gold Earrings Natural Australian Opal
Located in Berlin, DE
18K yellow gold stud earrings with bright Black Opal
gemstone origin - Australia
gem size is 5 x 7
Category
2010s Artisan Stud Earrings
Materials
Opal, 18k Gold, Yellow Gold
French 1960s 8.08 Carats Purple Jelly Opal 18 K Rose Gold Retro Cocktail Ring
Located in Poitiers, FR
Ring in 18 karat rose gold, eagle head hallmark.
An incredible vintage ring, its airy setting is
Category
Vintage 1960s French Retro Solitaire Rings
Materials
Opal, Gold, 18k Gold, Rose Gold
18k Gold Opal Diamond Brooch
Located in Montreal, QC
18k yellow gold , opal gemstone and 15 genuine diamond brooch. Unmarked, tested 18k, 40mm long x
Category
Vintage 1950s Unknown Brooches
Materials
Diamond, Opal, 18k Gold
5.47ct Black Opal & 18K Gold Necklace
Located in MAIN BEACH, QLD
Opal Type: Black Opal
Opal Weight: 5.47ct
Opal Origin: Lightning Ridge, NSW, Australia
Metals: 18K
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Black Opal, Opal, 18k Gold
Opal Diamond 18K Drop Earrings
Located in North Hollywood, CA
These beautiful Opal Diamond drop earrings are made in 18K Yellow Gold. There are 3 Opals per
Category
Early 2000s English Modern Drop Earrings
Materials
Diamond, Opal, 18k Gold
18k Gold Short Necklace with Opal Beads Australian Boulder Opal Pendant
By Angelina Fine Jewelry
Located in Amsterdam, NH
A lovely and intriguing necklace with a mesmerising natural Australian black opal pendant strung on
Category
2010s Dutch Artisan Beaded Necklaces
Materials
Opal, Black Opal, 18k Gold
Free Shipping
W 0.43 in L 16.54 in
Black Opal Gold Ring 18K Australian genuine opal precious wedding anniversary
By Alexey Gabilo
Located in Berlin, DE
18K yellow gold ring with natural Black Opal
Opal origin - Australia
weight of the opal - 1.5 carat
Category
2010s German Artisan Solitaire Rings
Materials
Opal, Black Opal, Gold, 18k Gold, Yellow Gold
Jelly Opal Diamond Drop Earrings 18K
Located in North Hollywood, CA
These beautiful Jelly Opals are special. These Jelly Opal Drop earrings are 4.5cm long with a pear
Category
Vintage 1960s English Modernist Drop Earrings
Materials
Diamond, Opal, 18k Gold
Oval Opal Pendant 18k Yellow Gold
Located in Honolulu, HI
Item Specifications:
Metal: 18K Yellow Gold
Style: Opal Pendant
Total Weight: 2.3 Grams
Category
21st Century and Contemporary Unknown Modern Pendant Necklaces
Materials
Opal, Yellow Gold, 18k Gold
18k Rose Gold Peruvian Opal Necklace
Located in Greenville, SC
An 18k rose gold pendant featuring one oval cabochon Peruvian Opal, weighing 16.64 carats on a
Category
2010s American Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Rose Gold
Fire Opal 18k Gold Diamond Unicorn Ring
By Kristin Hanson
Located in Rhinebeck, NY
Fire Opal 18k Gold Diamond Unicorn Ring. Handcrafted designer ring in 18k yellow gold with 11.06ct
Category
21st Century and Contemporary North American Modern Cocktail Rings
Materials
Diamond, Opal, Fire Opal, 18k Gold
Large Opal Diamond Ring 18K 6.75
Located in North Hollywood, CA
This Opal Ring is huge it measures 35mm x 30mm and has beautiful matrix of Blue, Pink, and Yellow
Category
Vintage 1960s American Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold
18K 1.76ct Opal and Emerald Ring
Located in Big Bend, WI
18K yellow gold ring featuring a 1.76 carat opal with emeralds. The opal has lively play of color
Category
21st Century and Contemporary Cocktail Rings
Materials
Emerald, Opal, Gold, 18k Gold, Yellow Gold
Opal and Pink Sapphire 18K Ring
Located in Naples, FL
Indulge in the captivating allure of our Opal and Pink Sapphire Ring, a true testament to timeless
Category
Late 20th Century Unknown Fashion Rings
Materials
Pink Sapphire, Opal, 18k Gold, Yellow Gold
18k Gold Opal and Peridot Drop Earrings
By Angelina Fine Jewelry
Located in Amsterdam, NH
A lovely handmade and one-of-a-kind pair of asymmetrical 18k gold earrings with boulder opals and
Category
2010s European Artisan Drop Earrings
Materials
Opal, Peridot, 18k Gold
Australian 6.52ct Crystal Opal & 18K Gold Ring
Located in MAIN BEACH, QLD
As blue as a tropical ocean and as magical as the aurora borealis, this amazing dark crystal opal
Category
21st Century and Contemporary Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold
Australian 10.70ct Light Opal & 18K Gold Necklace
Located in MAIN BEACH, QLD
choker is included with solid 18K gold and Platinum cables.
SPECIFICATIONS
Opal Type: Light Opal
Opal
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Opal, 18k Gold
Black Opal Necklace 18k gold with silver
Located in The Hague, ZH
Gold with silver necklace set with opal - 43 cm
Detailed description
The necklace is 43 cm long
Category
2010s Dutch Modern Choker Necklaces
Materials
Black Opal, 18k Gold, Silver
5.82ct Black Boulder Opal, Diamond & 18K Gold Necklace
Located in MAIN BEACH, QLD
What an amazing black boulder opal we have here. Bright reds, greens and blues in this bespoke
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold
Opal Necklace, 18K Yellow Gold Pendant, 9.7gr
Located in Laguna Beach, CA
Ethiopian opal pendant necklace.
The pendant setting is stamped 18k and weighs 8.8 grams gross
Category
20th Century Pendant Necklaces
Materials
Opal, 18k Gold, Yellow Gold
Dimos 18k Gold Fire Opal and Diamonds Necklace
Located in Athens, GR
them with all 3 colors of gold. Set in 18 karats yellow gold to be carrying and soft around the opals
Category
2010s Greek Neoclassical Pendant Necklaces
Materials
Diamond, Opal, Fire Opal, 18k Gold
Free Shipping
H 1.575 in W 0.787 in D 0.197 in L 19.685 in
Australian Opal and 18K Gold Cocktail Ring
Located in Watford, GB
Australian Opal Cocktail Ring
Lighting Ridge Solid Opal 2.40 Cts surrounded by white diamonds and
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold
Opal and diamonds ring in 18k gold
Located in PARIS, FR
Stones: 1 opal of 1.60 cts and 14 diamonds 8X8: 0.36ct
Material: 18k gold
Dimensions: 1.3cm x 1.1cm
Category
Vintage 1970s Fashion Rings
Materials
Diamond, Opal, 18k Gold
18K Gold Opal Alexander The Great Coin Pendant
Located in Arcadia, CA
18-karat yellow gold
Decorate with white diamonds 0.175ct and Opal
Ancient, authentic Alexander The
Category
2010s Pendant Necklaces
Materials
Opal, 18k Gold
Black Opal Pin Brooch 18K Yellow Gold Hand Made
Located in Dearborn, MI
Genuine Black Opal 18K Yellow Gold Pin Brooch Hand Made
Features a Fiery 12 x 11.7mm Black Opal
Category
2010s Brooches
Materials
Opal, Black Opal, 18k Gold, Yellow Gold
Precious White Opal & Boulder Opal "Heartbreak" Earrings in 18K Gold w Diamonds
By Eytan Brandes
Located in Sherman Oaks, CA
grams
Butterfly backs in 18 karat gold are included.
NOTE: One of the boulder opals has a hairline
Category
2010s American Contemporary Dangle Earrings
Materials
Diamond, Opal, Black Opal, Gold, 18k Gold, Yellow Gold
Free Shipping
W 0.43 in D 0.12 in L 1.77 in
Satin Finish Semi Black Opal & Fire Opal Halo Diamond Ring 18K Yellow Gold
Located in Suwanee, GA
Satin Finish Semi Black Opal & Fire Opal Halo Diamond Ring 18K Yellow Gold.
Design Idea:
I have a
Category
2010s American Arts and Crafts Engagement Rings
Materials
Diamond, Opal, Black Opal, Fire Opal, 18k Gold, Yellow Gold
18K White Gold Opal & Diamond Ring, 2.7g
Located in Laguna Beach, CA
Ladies Ethiopian opal and diamond ring in 18k white gold setting.
Stamped 18k, 2.66, .128 and
Category
20th Century More Rings
Materials
Diamond, Opal, 18k Gold, White Gold
Australian 61.79 Crat Boulder Opal & 18k Gold Necklace
Located in MAIN BEACH, QLD
.
SPECIFICATIONS
Opal Type: Black Boulder Opal
Opal Weight: 61.79ct
Opal Origin: Winton, QLD, Australia
Metals: 18K
Category
2010s Australian Pendant Necklaces
Materials
Opal, 18k Gold
18K Yellow Gold Antique Sapphire & Opal Ring
Located in Media, PA
This is a marvelous opal and sapphire dome style ring with beautiful sapphires and opals. The
Category
Late 20th Century Cocktail Rings
Materials
Opal, Sapphire, 18k Gold, Yellow Gold
Doublet Opal & Ethiopian Opal Dangle Earring With Emerald & Diamonds In 18k Gold
By Artisan NYC
Located in New York, NY
18KT:11.209g,
Diamond:0.93ct,
Emerald:1.27ct,
Opal:2.69ct,
Opal:9.57ct,
Size: 32X15 MM"
Category
21st Century and Contemporary Indian Artisan Dangle Earrings
Materials
Diamond, Emerald, Opal, 18k Gold
Free Shipping
W 0.6 in L 1.26 in
1.53ct Solid Australian Opal Ring 18K Gold R6722
Located in Osprey, FL
♥ Solid Australian Opal Ring 18K Gold
♥ The face of the ring measures 14.8mm in width (East West
Category
2010s American Engagement Rings
Materials
Opal, 18k Gold
Australian 2.20ct Black Opal, Diamond & 18K Gold Necklace
Located in MAIN BEACH, QLD
set in solid 18K yellow gold, it makes the opal pop with all its colourful glory. The cable chain is
Category
21st Century and Contemporary Australian Art Deco Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold
Australian 8.01ct Boulder Opal, Emerald & 18K Gold Brooch
Located in MAIN BEACH, QLD
from solid 18K gold with gorgeous blue-green boulder opal back and green emeralds for eyes. A timeless
Category
Late 20th Century Australian Brooches
Materials
Opal, Emerald, Black Opal, Diamond, 18k Gold
Opal and 18K Gold Hoop Earrings Rhodium Plated
Located in Bangkok, Thailand
A pair of 18k Gold hoop earrings set with round cabochon Opal. This beautiful statement earrings
Category
21st Century and Contemporary Modern Hoop Earrings
Materials
Opal, 18k Gold, Rhodium
Australian 1.84ct Black Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
A beautiful flagstone pattern solid Australian Black Opal set in solid 18K gold and accented with
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold
16.92 Carat Australian Boulder Opal & 18k Gold Earrings
Located in MAIN BEACH, QLD
: 16.92 ct
Setting: 18K solid Gold
THE GRYFFIN OPAL DIFFERENCE
By investing in solid Australian opal
Category
2010s Australian Dangle Earrings
Materials
Opal, 18k Gold
16.47 Carat Australian Boulder Opal & 18k Gold Earrings
Located in MAIN BEACH, QLD
18K solid gold as they deserve no less.
SPECIFICATIONS
Opal Type: natural solid Australian Boulder
Category
2010s Australian Dangle Earrings
Materials
Opal, 18k Gold
Australian 2.04ct Black Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
Metals: 18K solid Gold
Ring Size: Resized to fit you perfectly.
THE GRYFFIN OPAL DIFFERENCE
By investing
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold
Theodoros Earrings 18k Gold Opal Multicolored Gemstones
Located in Beverly Hills, CA
wearable, the earrings are a great addition to your jewelry collection.
Made of 18 karat blackened gold
Category
2010s Greek Dangle Earrings
Materials
Multi-gemstone, Opal, Gold, 18k Gold
Australian 2.63ct Black Opal, Diamond, 18k Gold Ring
Located in MAIN BEACH, QLD
The deep blues shimmer in this Australian Black Opal like glowing flashes of an evening ocean. The
Category
21st Century and Contemporary Australian Engagement Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, White Gold
Opal and Diamond Ring 18k Yellow Gold
Located in Honolulu, HI
Item Specifications:
Metal: 18K Yellow Gold
Style: Opal and Diamond Ring
Total Weight: 4.4
Category
Late 20th Century Unknown Modern Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Australian Opal Sparkling Cocktail Diamond 18K Gold Ring
Located in Scottsdale, AZ
Elevate your jewelry collection with our exquisite Sparkling Australian Opal Diamond Ring. Crafted
Category
Vintage 1970s Fashion Rings
Materials
Diamond, Opal, 18k Gold
Australian Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
A classic beauty from a bygone era. This magnificent black opal with its deep mysterious blues
Category
Late 20th Century Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
18k Gold Australian Boulder Opal and Peridot Pendant
By Angelina Fine Jewelry
Located in Amsterdam, NH
A stylish and intriguing 18k gold pendant with a natural Australian boulder opal and a brilliant
Category
2010s Dutch Artisan Pendant Necklaces
Materials
Opal, Peridot, 18k Gold
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18k Opal For Sale on 1stDibs
On 1stDibs, you can find the most appropriate 18k opal for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Yellow Gold. Find an antique version now, or shop for 1457 vintage or 2397 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a 18k opal from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Finding an appealing 18k opal — no matter the origin — is easy, but Meghna Jewels, Renata Bernard and Laura Dalben each produced a popular version that is worth a look. See these pages for a cabochon iteration of this accessory, while there are also oval cut cut and round cut cut versions available here, too. Most of our 18k opal for sale are for women, but there are 892 pieces available to browse for men.
How Much is a 18k Opal?
The price for a 18k opal starts at $199 and tops out at $385,000 with these rings, on average, selling for $4,801.
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Sterling Opal Diamond Pendant
Peruvian Opal Jewelry
Art Deco Jewellery Opal Pendant
Diamond Brooch Gia Certified
22k Gold Australia
Ethiopian Opal Pendant
Dark Blue Opal
Boulder Opal Cocktail Rings
Australian Black Opal From Lightning Ridge
Black Opal Pendants In Yellow Gold
Oval Opal And Diamonds 18k Gold Necklace
10ct Opal