18k Australian Opal
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Natural Australian 10.97ct Black Opal and Diamonds Cocktail Ring 18K Yellow Gold
By Opal Minded
Located in Sydney, AU
finishing touch.
The gemstone at the centre of this opal ring is an Australian black opal from Lightning
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, Black Opal, Gold, 18k Gold, Yellow 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 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
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
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
Australian 6.52ct Crystal Opal & 18K Gold Ring
Located in MAIN BEACH, QLD
: Lightning Ridge, NSW, Australia
Metals: 18K solid Gold
Ring Size: Resized to fit you perfectly.
THE GRYFFIN
Category
21st Century and Contemporary Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k 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
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
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
Australian 5.28ct Dark Opal, Diamond & 18K Gold Necklace
Located in MAIN BEACH, QLD
piece. Set in 18K solid gold, it is an investment that will last a lifetime.
SPECIFICATIONS
Opal Type
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, 18k Gold
Australian 10.38ct Boulder Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
, Australia
Diamonds: 0.44ct D IF - F VVS
Metals: 18K Solid Gold
Total Weight: 18.20g
Ring Size: Resized to
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold
Australian 8.01ct Boulder Opal, Emerald & 18K Gold Brooch
Located in MAIN BEACH, QLD
: 50.5 x 40.1mm
Metals: 18K solid Gold
THE GRYFFIN OPAL DIFFERENCE
By investing in solid Australian
Category
Late 20th Century Australian Brooches
Materials
Opal, Emerald, Black Opal, Diamond, 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 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
Australian 0.94ct Boulder Opal, Diamond & 18K Gold Necklace
Located in MAIN BEACH, QLD
opal that would make any of the outback opal hunters envious, set in 18K solid gold and with the
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, 18k Gold
Australian 2.04ct Black Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
Opal
Opal Weight: 2.04ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds: 0.05ct D IF - F VVS
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 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
Australian 13.77ct Dark Opal, Diamond & 18K Gold Earrings
Located in MAIN BEACH, QLD
SPECIFICATIONS
Opal Type: Dark Opal
Opal Weight: 13.77ct
Diamonds: 0.08ct D IF - F VVS
Metals: 18K
Category
2010s Australian Art Deco Dangle Earrings
Materials
Diamond, Opal, 18k Gold
Australian 1.35ct Crystal Opal, Diamond, 18K Gold Ring
Located in MAIN BEACH, QLD
, Australia
Diamonds: 0.27ct D IF - F VVS
Metals: 18K solid Gold
Ring Size: Resized to fit you perfectly.
THE
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold
Australian Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
:
Opal Type: Black Opal
Opal Weight: 12.28ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds
Category
Late 20th Century Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 2.25 Carat Black Opal, Diamond & 18k Gold Earrings
Located in MAIN BEACH, QLD
Diamonds: 0.18ct D IF - F VVS
Metals: 18K solid Gold
THE GRYFFIN OPAL DIFFERENCE
By investing in solid
Category
2010s Australian Dangle Earrings
Materials
Diamond, Opal, Black Opal, 18k Gold
Free Shipping
H 1.2 in W 0.45 in D 0.13 in
Australian 3.36ct Crystal Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
Crystal Opal
Opal Weight: 3.36ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds: 0.15ct D IF - F
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold
1.44 Carat Australian Black Opal, Diamond & 18k Gold Earrings
Located in MAIN BEACH, QLD
D IF - F VVS
Metals: 18K solid Gold, Platinum
THE GRYFFIN OPAL DIFFERENCE
By investing in solid
Category
2010s Australian Clip-on Earrings
Materials
Diamond, Opal, Black Opal, Platinum, 18k Gold
Australian 4.41ct Crystal Opal, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Opal Weight: 4.41ct
Opal Origin: Lightning Ridge, NSW, Australia
Metals: 18K solid Gold, Platinum
Ring
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Platinum, 18k Gold
Australian 2.43ct Black Opal, Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
holds a freeform shaped black opal surrounded in 18K yellow gold and high jewellery grade brilliant
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 2.60ct Boulder Opal, Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
: Winton, QLD, Australia
Diamonds: 0.16ct D IF - F VVS
Metals: 18K solid Gold, Platinum
Chain: 6.5g, 48cm
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 1.54ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Australian Opal in all its glorious depths and complexity.
No matter how many times you look upon this gem
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 21.86ct Boulder Opal, Diamond, Platinum & 18K Gold Necklace
Located in MAIN BEACH, QLD
This stunning piece is a very unique solid Australian Boulder Opal. Deep mysterious blues and
Category
Late 20th Century Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 6.39ct Light Opal, Diamond & 18K Gold Ring
Located in MAIN BEACH, QLD
. This colour combination highlights the depths and brightness the Australian light opal can bring. This
Category
Late 20th Century Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, 18k Gold
Australian 16.04ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
the mysterious outback of Australia, surrounded by brilliant white diamonds in a platinum and 18K
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 3.00ct Boulder Opal, Diamond, 18K Gold & Platinum Bracelet
Located in MAIN BEACH, QLD
Opal Origin: Winton, QLD, Australia
Diamonds: 0.16ct D IF - F VVS
Metals: 18K solid Gold, Platinum
THE
Category
Late 20th Century Australian Bangles
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 3.29ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
.
SPECIFICATIONS
Opal Type: Black Opal
Opal Weight: 3.29ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Black Opal, Diamond, Opal, Platinum, 18k Gold
Australian 4.02ct Crystal Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
amazing opal and set it in this solid 18K gold ring and surround it with high jewellery grade brilliant
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, Platinum, 18k Gold
1.95 Carat Australian Crystal Opal & 18k Rose Gold Necklace
Located in MAIN BEACH, QLD
featuring a solid Australian Crystal Opal at it heart. The setting also includes a solid 18k rose gold chain
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Opal, 18k Gold, Rose Gold
Free Shipping
W 0.44 in D 0.17 in L 0.86 in
Australian 1.35ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Weight: 1.35ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds: 0.17ct D IF - F VVS
Metals: 18K
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 2.71ct Crystal Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
: 2.71ct
Opal Origin: Coober Pedy, SA, Australia
Diamonds: 0.36ct D IF - F VVS
Metals: 18K solid Gold
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Platinum
Australian 19.06ct Boulder Opal, Diamond, 18k Gold & Platinum Bracelet
Located in MAIN BEACH, QLD
Metals: 18K solid Gold, Platinum
THE GRYFFIN OPAL DIFFERENCE
By investing in solid Australian opal
Category
1990s Australian Bangles
Materials
Diamond, Opal, 18k Gold, Platinum
Australian 23.00ct Boulder Opal, Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
Australian opal in all its exquisite beauty. This boulder opal is a true heirloom gem. At 23ct
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, 18k Gold, Platinum
Australian 1.45ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
.
SPECIFICATIONS
Opal Type: Black Opal
Opal Weight: 1.45ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds
Category
Late 20th Century Australian Modern Cocktail Rings
Materials
Diamond, Opal, Black Opal, Platinum, 18k Gold
Australian 1.85ct Black Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
. Timeless beauty showcasing the magnificence of solid Australian Black Opal, sparkling white diamond
Category
21st Century and Contemporary Australian Art Deco Cocktail Rings
Materials
Diamond, Opal, Black Opal, Platinum, 18k Gold
Australian Boulder Opal, Pink Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
vast natural wildness that is Australia. The opal is a natural solid Black Boulder Opal and has a
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Pink Diamond, Opal, 18k Gold, Platinum
Australian 8.03ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
SPECIFICATIONS
Opal Type: Boulder Opal
Opal Weight: 8.03ct
Opal Origin: Winton, QLD, Australia
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Platinum
Australian 6.61ct Opal Doublet Earrings in 18K White Gold
By Renata Bernard
Located in Sydney, AU
. This spectacular piece features a black opal (6.61ct) hailing from Australia and presents an eclectic
Category
2010s Australian Contemporary Dangle Earrings
Materials
Diamond, Opal, 18k Gold, White Gold
Australian 5.71ct Light Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
opal and will be adored. Set in 18K solid gold with brushed platinum and high jewellery grade diamonds
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Platinum
Australian 8.24ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
Weight: 8.24ct
Opal Origin: Winton, QLD, Australia
Diamonds: 0.19ct D IF - F VVS
Metals: 18K Solid Gold
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Opal, Diamond, 18k Gold, Platinum
Australian 5.65ct Black Opal, Diamond & 18k White Gold Necklace
Located in MAIN BEACH, QLD
: Black Opal
Opal Weight: 5.65ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds: 0.32ct D IF - F
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, White Gold
Free Shipping
W 0.96 in D 0.34 in L 0.86 in
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
Australian 6.35ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
for your investment in gem-grade Australian opal than a gemstone that takes you away to a place of
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Platinum
Australian Opal and Gold Ring
Located in Watford, GB
Australian Solid Opal Signet Ring, 8.40 Cts surrounded by white diamonds and set in 18K yellow gold
Category
21st Century and Contemporary Australian Signet Rings
Materials
Diamond, Opal, 18k Gold
Australian 6.95ct Boulder Opal, Diamond, 18K Gold & Platinum Ring
Located in MAIN BEACH, QLD
: 6.95ct
Opal Origin: Winton, QLD, Australia
Diamonds: 0.22ct D IF - F VVS
Metals: 18K solid Gold, Platinum
Category
Late 20th Century Australian Cocktail Rings
Materials
Diamond, Opal, Platinum, 18k Gold
Natural Australian 4.21ct Black Opal Diamonds Necklace 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
coloured Australian black opal (4.21ct) displays an intense green, indigo and gold colour-play that strikes
Category
2010s Australian Contemporary Drop Necklaces
Materials
Black Opal, Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.03 in W 0.59 in
Australian 1.25ct Black Opal, Diamond, 18k Yellow & White Gold Ring
Located in MAIN BEACH, QLD
solid Australian Black Opal with shimmering orange, yellow, blues and greens that take you into its
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Black Opal, Opal, Diamond, White Gold, 18k Gold
5.09ctw Australian Natural Black Opal Pendant Necklace 18k White Gold
Located in Houston, TX
This beautiful pendant features a natural 5.09ctw natural black opal set in 18 karat white gold on
Category
21st Century and Contemporary Australian Modern Pendant Necklaces
Materials
Opal, Black Opal, 18k Gold, White Gold
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
Australian 0.75ct Black Opal, Diamond, 18k Yellow & White Gold Ring
Located in MAIN BEACH, QLD
Opal Type: Black Opal
Opal Weight: 0.75ct
Opal Origin: Lightning Ridge, NSW, Australia
Diamonds: 0.31ct
Category
21st Century and Contemporary Australian Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, White Gold
Australian 2.7ct Opal Doublet Bracelet in 18K White Gold
By Renata Bernard
Located in Sydney, AU
Metal: 18K White Gold
This opal doublet bracelet arrives in a gun-metal aluminium box inside a paper
Category
2010s Australian Contemporary Cuff Bracelets
Materials
Opal, Diamond, White Gold
Australian Natural Untreated Boulder Opals Necklace in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
in a delicate 18K Yellow Gold chain to let the unique beauty of the Australian opal shine, this
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Yellow Gold
Australian 6.10ct Black Boulder Opal, Diamond, 18K Gold & Platinum Necklace
Located in MAIN BEACH, QLD
Metails: 18K Solid Gold, Platinum
THE GRYFFIN OPAL DIFFERENCE
By investing in solid Australian opal
Category
21st Century and Contemporary Australian Choker Necklaces
Materials
Diamond, Opal, 18k Gold, Platinum
1.60ctw Australian Oval Shaped Opal Pendant in 18k White Gold
Located in Houston, TX
This magnificent oval shaped opal pendant measures 1.60 carats and is set in 18 karat white gold
Category
21st Century and Contemporary Australian Pendant Necklaces
Materials
Opal, 18k Gold, White Gold
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18k Australian Opal For Sale on 1stDibs
Surely you’ll find the exact 18k australian opal you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using gold, white gold and 18k gold. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a 18k australian 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 19th Century while another version may have been produced as recently as the 21st Century. A 18k australian opal from Renata Bernard, Laura Dalben and Oreste Dalben — each of whom created a beautiful version of this treasured accessory — is worth considering. A 18k australian opal of any era or style can lend versatility to your look, but a version featuring opal, from our inventory of 1629, is particularly popular. A cabochon version of this piece has appeal, but there are also oval cut and round cut versions for sale. Most of our 18k australian opal for sale are for women, but there are 581 pieces available to browse for men.
How Much is a 18k Australian Opal?
Prices for a 18k australian opal can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $136 and can go as high as $516,000, while this accessory, on average, fetches $4,696.