18 Carat Opal
21
to
347
1,361
936
1,745
728
696
250
206
170
152
127
97
57
55
53
51
46
41
38
35
32
17
16
14
13
9
6
5
4
4
2
2
2
2
2
1
1
1
181
66
64
39
36
Sort By
11.76 carat Ethiopian Opal Fire Opal Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. These stud earrings are hand set in 11.76 carats Ethiopian opal, 1.1 carats
Category
21st Century and Contemporary Unknown Artisan Drop Earrings
Materials
Diamond, Opal, Fire Opal, Gold, 18k Gold
Pink Opal 18 Carat Rose Gold Earrings
Located in Paris, FR
Pair of rose gold earrings set with pink opal cabochons.
Total estimated opal weight: 3 carats
Category
Early 2000s French Modern Drop Earrings
Materials
Opal, 18k Gold, Rose Gold
18 Carat Natural Fire Opal Pear, Fancy Opal, October Birthstone, Orange Gemstone
Located in New York, NY
DETAILS
Fire Opal Weight: 18.19 CT
Measurements: 23.4 x 18.1 mm
Shape: Pear
Color: Intense Orange
Category
21st Century and Contemporary American Artisan Loose Gemstones
Materials
Opal, Fire Opal
18 Karat Yellow Gold White Opal Ring '3 Carat'
Located in San Francisco, CA
This colorful opal and diamond ring features an oval opal framed by Micro prong round brilliant
Category
21st Century and Contemporary American More Rings
Materials
Opal, Yellow Gold
3.62 Carat Opal Diamond 18 Karat Rose Gold Ring
By Roshe Jewels
Located in Los Angeles, CA
3.62 Carat Oval Cut Opal Diamond Rose Gold Ring
The Oval Cut Opal in this ring weighs 3.19 carats
Category
21st Century and Contemporary American Contemporary Cluster Rings
Materials
Diamond, Pink Sapphire, Opal, 18k Gold, Rose Gold
Baroque Pearls Opal 18 Carats Yellow Gold Earrings
Located in Paris, FR
)
Total estimated weight of the opals: 0.60 carats
Weight of the earrings: 18.7 g
French work circa 1990
Category
1990s French Contemporary Drop Earrings
Materials
Opal, Pearl, Yellow Gold
3.24 Carat Opal Diamond 18 Karat Rose Gold Ring
By Roshe Jewels
Located in Los Angeles, CA
The Oval Cut Opal in this ring weighs 2.67 Carats and the measurements of the Opal are 8 mm x 12 mm
Category
21st Century and Contemporary American Contemporary Cluster Rings
Materials
Pink Sapphire, Opal, Diamond, 18k Gold, Rose Gold
2.91 Carat Opal Diamond 18 Karat Yellow Gold Ring
By Roshe Jewels
Located in Los Angeles, CA
2.91 Carat Oval Cut Opal Diamond 18 Karat Yellow Gold Ring
The Oval Cut Opal in this ring weighs
Category
21st Century and Contemporary American Modern Cocktail Rings
Materials
Pink Sapphire, Opal, Diamond, Yellow Gold, 18k Gold
Antique Edwardian Precious Opal 18 Carat Gold Ring
Located in London, GB
Our antique Edwardian Opal 18ct gold ring is elegance and sophistication. Expertly handmade in 18ct
Category
Antique Early 1900s English Edwardian Bridal Rings
Materials
Opal, Gold
8.81 Carat Opal Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite double drop earrings are set with 8.81 carats Opal
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, 18k Gold, Gold
3.82 Carat Opal Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold, 3.82 carats opal doublet and 0.60
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, Gold, 18k Gold
18 Karat Gold 5.3 Carat Opal Diamond Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This stunning ring has been crafted from 18-karat gold. It is set with 5.3 carats opal doublet and
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, Gold, 18k Gold
3.2 Carat Opal Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold, 3.2 carats opal and 0.91 carats of
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, Gold, 18k Gold
9.44 Carat Fire Opal 18 Karat Gold Diamond Ring
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. This beautiful ring is hand set in 9.44 carats fire opal and .50 carats of
Category
21st Century and Contemporary Unknown Contemporary Engagement Rings
Materials
Diamond, Opal, Fire Opal, Gold, 18k Gold
16.26 Carat Fire Opal 18 Karat Gold Diamond Necklace
By Meghna Jewels
Located in Hoffman Estate, IL
Cast from 14-karat gold, this exquisite necklace is hand set with 16.26 carats Fire Opal and 3.22
Category
21st Century and Contemporary Unknown Modern Drop Necklaces
Materials
Diamond, Opal, Fire Opal, Gold, 18k Gold
3.8 Carat Opal Diamond 18 Karat Cocktail Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold. It is hand set in 3.8 carats opal
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, White Gold
10.24 Carat Opal Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 10.24 carats Opal
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, 18k Gold, White Gold, Gold
2.42 Carat Opal Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold, 2.42 carats opal and 0.44 carat diamond
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Gold, White Gold
13.1 Carat Fire Opal 18 Karat Gold Diamond Ring
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. This beautiful ring is hand set in 13.1 carats fire opal, .22 carats
Category
21st Century and Contemporary Unknown Contemporary Wedding Rings
Materials
Fire Opal, Sapphire, Opal, Diamond, 18k Gold, Gold
Boulder Opal Ring with 18 Carat Yellow Gold
Located in Kirschweiler, DE
This Boulder Opal Ring with 18 Carat Yellow Gold is totally handmade and cut of one extraordinary
Category
2010s German Arts and Crafts Cocktail Rings
Materials
Opal, Yellow Gold, 18k Gold, Gold
18 Karat Gold 2.25 Carat Opal Diamond Ring
By Meghna Jewels
Located in Hoffman Estate, IL
carats opal and illuminated with 1.32 carats glittering diamonds.
The ring is a size 7 and may be
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Gold, White Gold
3.30 Carat Trilliant Cabochon Opal and Diamond 18 Carat Gold Cocktail Ring
Located in London, GB
weight of 0.69ct, all mounted in 18 carat yellow gold. Hallmarked and stamped 750, O3.30 D0.69. UK finger
Category
2010s British Modern Cocktail Rings
Materials
Opal, Diamond, Yellow Gold, 18k Gold, Gold
36.15 Carat Boulder Opal 18 Karat White Gold Necklace
Located in Houston, TX
This unique pendant was custom made in house and features a 36.15 carat Boulder opal set in 18
Category
21st Century and Contemporary American Pendant Necklaces
Materials
Opal, Gold, 18k Gold, White Gold
Vintage Opal 4.60 Carats Diamonds 18 Carats Yellow Gold Brooch/ Pendant
Located in Paris, FR
.
Brooch size : 61 x 43 mm ( 2,402 x 1,693 inch)
Total weight: 38.5 g
Mounted in 18 carats yellow gold
Category
Vintage 1980s Italian Retro Brooches
Materials
Diamond, Opal, 18k Gold, Yellow Gold
11.16 Carats Fire Opal Garnet Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This exquisite ring is handcrafted in 18-karat gold. It is set in 11.16 carats fire opal, garnet
Category
21st Century and Contemporary Modern Cocktail Rings
Materials
Diamond, Garnet, Opal, Fire Opal, Gold, 18k Gold
Vintage Opal and 18 Carat Gold Five-Stone Ring
Located in Chipping Campden, GB
The opals in this ring are gorgeous and throw some great colours. They are set flush within the
Category
Vintage 1960s British More Rings
Materials
Opal, Gold
3.5 Carat Opal Diamond 18 Karat Fireworks Cocktail Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold, 3.5 carats opal and 0.67 carat diamond
Category
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold
18 Karat White Gold White Opal Ring '2 2/3 Carat'
Located in San Francisco, CA
This colorful opal and diamond ring features an oval opal framed by Micro prong round brilliant
Category
21st Century and Contemporary American More Rings
Materials
Opal, White Gold
18 Karat White Gold White Opal Ring '3 1/4 Carat'
Located in San Francisco, CA
This colorful opal and diamond ring features an oval opal framed by Micro prong round brilliant
Category
21st Century and Contemporary American More Rings
Materials
Opal, White Gold
8.1 Carat Fire Opal 18 Karat Gold Diamond Stud Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. These stunning one of a kind stud earrings are hand set in 8.1 carats fire
Category
21st Century and Contemporary Unknown Contemporary Stud Earrings
Materials
Diamond, Opal, Fire Opal, Gold, 18k Gold
18 Karat Yellow Gold 3.71 Carat Opal Solitaire Ring
By Gems Paradise
Located in Jaipur, IN
18 Karat Yellow Gold 3.71 Carat Opal Solitaire Ring
This statement Opal Ring draws its inspiration
Category
2010s Indian Modern Solitaire Rings
Materials
Opal, 18k Gold, Yellow Gold
Fire Opal Cabochon Diamonds 18 Carat Yellow Gold Ring
Located in Paris, FR
.
Dimensions : 10.10 x 19.47 x 5.49 mm (0.397 x 0.766 x 0.216 inch)
Estimated weight of the opal : 3 carats
Category
Early 2000s French Contemporary Band Rings
Materials
Diamond, Fire Opal, Yellow Gold
Edwardian Opal and 18 Carat Gold Five-Stone Ring
Located in Chipping Campden, GB
The opals in this ring are gorgeous and throw some great colours. They are set upon a simple
Category
Antique Early 1900s British Edwardian More Rings
Materials
Opal, Gold
2.73 Carat Diamond Baguette Opal 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these beautiful earrings are set with 3.3 carats of Opal doublets
Category
21st Century and Contemporary Unknown Modern Dangle Earrings
Materials
Diamond, Opal, 18k Gold, Gold
3.92 Carat Opal Emerald 18 Karat Gold Diamond Ring
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. This beautiful ring is hand set in 3.92 carats opal, .77 carats emerald and
Category
21st Century and Contemporary Unknown Contemporary Engagement Rings
Materials
Diamond, Emerald, Opal, Gold, 18k Gold
22.57 Carat Opal Emerald Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 22.57 carats Opal
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Emerald, Opal, 18k Gold, Gold
Opal 7.47 Carat Diamonds 18 Karat Yellow Gold Ring
By Mousson Atelier
Located in Bangkok, TH
Opal 7.47 Carat Diamonds 18 Karat Yellow Gold Ring
Opals, unlike many other stones, are almost
Category
21st Century and Contemporary Thai Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Rough Opal Diamonds 18 Carats Yellow Gold Rocaille Ring
By Les Pierres de Julie
Located in Paris, FR
brilliant-cut diamonds and one baguette-cut diamond.
18-carat frosted yellow gold, 750 / 1000th (eagle's
Category
2010s Contemporary Fashion Rings
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Vintage Opal and Diamond 18 Carat Gold Cocktail Ring
Located in Chipping Campden, GB
The opal is pale in colour and has lots of flashes of red and all other colours within it. The
Category
Vintage 1970s British Three-Stone Rings
Materials
Diamond, Opal, Gold, 18k Gold
18 Karat Gold 2.35 Carat Opal Diamond Stud Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
These stunning 2.35 carats Opal diamond stud earrings are handmade in 18-karat white gold. It is
Category
21st Century and Contemporary Unknown Contemporary Stud Earrings
Materials
Diamond, Opal, 18k Gold, White Gold
13.95 Carat Opal Emerald Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Cast from 18-karat gold, these exquisite drop earrings are set with 13.95 carats Opal doublet, .78
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Emerald, Opal, Gold, 18k Gold
10.9 Carat Opal 18 Karat White Gold Diamond Necklace
By Meghna Jewels
Located in Hoffman Estate, IL
Cast from 18-karat gold, this exquisite necklace is handset with 10.9 carats of opal doublets, 4.1
Category
21st Century and Contemporary Unknown Contemporary Drop Necklaces
Materials
Diamond, Opal, Sapphire, Gold, 18k Gold, White Gold
8.0 Carat Opal Multi Sapphire 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 8.0 carats Opal doublet
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Sapphire, 18k Gold, Gold
2.75 Carat Opal Diamond 18 Karat Gold Stud Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
These stunning 2.75 carats Opal doublet diamond stud earrings are handmade in 18-karat gold and set
Category
21st Century and Contemporary Unknown Contemporary Dangle Earrings
Materials
Diamond, Opal, 18k Gold, Gold
1960s 7.32 Carat Opal Diamond 18 Carat Rose Gold Retro Ring
Located in Poitiers, FR
golden threads that come together to form the base.
Total weight of the opal: 7.32 carat
Total diamond
Category
Vintage 1960s French Retro Cocktail Rings
Materials
White Diamond, Opal, Diamond, 18k Gold, Rose Gold, Gold
11.2 Carat Opal Emerald Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 karat gold. These stud earrings are hand set in 11.2 carats opal doublet, .84 carats
Category
21st Century and Contemporary Unknown Contemporary Drop Earrings
Materials
Diamond, Emerald, Opal, Gold, 18k Gold
41.2 Carat Malachite Opal Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these stunning earrings are set with 41.2 carats malachite, 1.0
Category
21st Century and Contemporary Unknown Modern Drop Earrings
Materials
Diamond, Malachite, Opal, 18k Gold, Gold
8.32 Carat Opal Emerald Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 8.32 carats Opal, .74
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Emerald, 18k Gold, Rose Gold, Gold
7.2 Carat Opal Sapphire Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 7.2 carats Opal, .68
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Sapphire, 18k Gold, White Gold, Gold
Antique Opal and 18 Carat Gold Five-Stone Ring
Located in Chipping Campden, GB
The opals in this ring are gorgeous and throw some great colours. They are set upon the 9ct gold
Category
Vintage 1920s British Art Deco More Rings
Materials
Opal, Gold
4.90 Carat Mexican Fire Opal Diamond 18 Karat Yellow Gold Cocktail Ring
By DGI
Located in Los Angeles, CA
are SI-F. The total carat weight of the ring is 4.90 Carats. The Fire Opal has its origins from Mexico
Category
21st Century and Contemporary American Victorian Cocktail Rings
Materials
Fire Opal, Opal, Diamond, 18k Gold, Yellow Gold
Crispy Sparkling Opal Necklace with 18 Carat Rose Gold
Located in Kirschweiler, DE
This Exceptional Crispy Sparkling Opal Necklace with 18 Carat Rose Gold is totally handmade
Category
21st Century and Contemporary German Arts and Crafts Beaded Necklaces
Materials
Opal, Gold, 18k Gold, Rose Gold
25.18 Carat Opal Emerald Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 25.18 carats Opal, 2.2
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Emerald, Sapphire, 18k Gold, White Gold, Gold
4.35 Carat Opal Diamond 18 Karat Gold Stud Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these stunning stud earrings are set with 4.35 carats Opal doublets
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Blue Sapphire, 18k Gold, White Gold, Gold
4.82 Carat Opal, Emerald and Diamond 18 Karat Yellow Gold Ring
By DGI
Located in Los Angeles, CA
This stunning ring has an Opal that weighs 3.11 Carats with Emeralds that weigh 1.42 Carats and
Category
2010s American Contemporary Cocktail Rings
Materials
Opal, Emerald, Diamond, 18k Gold, Yellow Gold
15.52 Carat Fire Opal 7.01 Carat Zircon 18 Carat Gold Necklace by Georg Spreng
By Georg Spreng
Located in Berlin, DE
provided the gemstones.
The sparkling luscious orange of the 15.52 carat fire opal drop is complemented
Category
2010s European Modern Pendant Necklaces
Materials
Zircon, Fire Opal, 18k Gold, Gold
18.23 Carat Opal Tanzanite Diamond 18 Karat Gold Earrings
By Meghna Jewels
Located in Hoffman Estate, IL
Handcrafted from 18-karat gold, these exquisite drop earrings are set with 18.23 carats Opal, 2.81
Category
21st Century and Contemporary Contemporary Drop Earrings
Materials
Diamond, Opal, Tanzanite, 18k Gold, White Gold, Gold
12.98 Carat Opal Diamond 18 Karat Gold Pendant Necklace
By Meghna Jewels
Located in Hoffman Estate, IL
Cast in 18 Karat gold, this beautiful pendant features 12.98 carats of opal & .16 carats of
Category
21st Century and Contemporary Unknown Artisan Chain Necklaces
Materials
Diamond, Opal, Blue Sapphire, Gold, 18k Gold, Yellow Gold
Vintage Opal and Diamond 18 Carat Gold Cluster Ring
Located in Chipping Campden, GB
Sat at the centre of a sparkling halo of diamonds is a gorgeous opal. The opal has wonderful hues
Category
Vintage 1970s British Cluster Rings
Materials
Diamond, Opal, Gold, 18k Gold, Platinum
8.20 Carat Pave Diamond and Fire Opal 18 Karat Leaves Pendant Brooch
Located in Chevy Chase, MD
carats. There are six tumbled prong set Fire Opals that are a beautiful tiger orange tone. The piece
Category
Late 20th Century Pendant Necklaces
Materials
Diamond, Opal, Fire Opal, 18k Gold, White Gold, Yellow Gold
- 1
- ...
Get Updated with New Arrivals
Save "18 Carat Opal", and we’ll notify you when there are new listings in this category.
18 Carat Opal For Sale on 1stDibs
On 1stDibs, you can find the most appropriate 18 carat opal for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from gold, 18k gold and yellow gold — can elevate any look. Our collection of these items for sale includes 1279 vintage editions and 1805 modern creations to choose from as well. If you’re looking for a 18 carat 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. A 18 carat opal from Meghna Jewels, Syna Jewels and LB Exclusive — each of whom created a beautiful version of this treasured accessory — is worth considering. A 18 carat opal can be a stylish choice for most occasions, but opal rings, from our inventory of 2131, can add a particularly distinctive touch to your look, day or night. 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. There aren’t many items for men if you’re seeking a 18 carat opal, as most of the options available are for women and unisex.
How Much is a 18 Carat Opal?
The price for a 18 carat opal starts at $137 and tops out at $516,000 with these rings, on average, selling for $3,701.