Natural Untreated Opal
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Rose Gold Natural Opal Diamond Ring
Located in Palm Desert, CA
14 Karat Rose Gold natural untreated Opal with Diamond Halo Ring. Opal is 14 x 11.5 x 5mm and has a
Category
2010s American Contemporary Cocktail Rings
Materials
Diamond, Opal, Gold, 14k Gold, Rose Gold
7.88ct Natural Untreated Australian Boulder Opal
By Renata Bernard
Located in Sydney, AU
Australia is the birthplace of the most beautiful precious opal gemstones in the world. Fine
Category
2010s Australian Contemporary Loose Gemstones
Materials
Opal
24.11ct Natural Solid Untreated Black Boulder Opal
Located in MAIN BEACH, QLD
sourced, and internationally guaranteed untreated natural opals of impeccable quality.
— Fast and highly
Category
2010s Australian Loose Gemstones
Materials
Opal, Black Opal
14K Gold Ring Genuine Opal Diamond Halo IAG Certified Gemstones woman´s ring
Located in MADRID, ES
Size:15
Metal Type: 14K Rose Gold
Gemstones:
1 Natural Untreated Opal
Cut: Cabochon
Carat Weight
Category
21st Century and Contemporary Spanish Contemporary Cocktail Rings
Materials
Diamond, Opal, 14k Gold, Rose Gold
Natural Untreated Premium Quality 2.43ct Australian Black Opal
By Renata Bernard
Located in Sydney, AU
Australia is the birthplace of the most beautiful precious opal gemstones in the world. Fine
Category
2010s Australian Contemporary Loose Gemstones
Materials
Black Opal, Opal
Free Shipping
W 0.32 in D 0.16 in L 0.54 in
Natural Untreated Premium Quality 2.16ct Australian Black Opal
By Renata Bernard
Located in Sydney, AU
Australia is the birthplace of the most beautiful precious opal gemstones in the world. Fine
Category
2010s Australian Contemporary Loose Gemstones
Materials
Opal, Black Opal
'Black Galaxy' 99.60ct Natural Solid Untreated Australian Black Opal
Located in MAIN BEACH, QLD
choosing ethical, sustainably sourced, and internationally guaranteed untreated natural opals of impeccable
Category
2010s Australian Loose Gemstones
Materials
Opal, Black Opal
Natural Untreated Australian Boulder Opal Necklace in Sterling Silver
By Renata Bernard
Located in Sydney, AU
The regally sizeable ‘Cordelia’ boulder opal necklace set in sterling silver has style and
Category
2010s Australian Contemporary Multi-Strand Necklaces
Materials
Opal, Sterling Silver
Natural Untreated Australian 3.77ct Natural Boulder Opal Ring in 18K White Gold
Located in Sydney, AU
Captivating in its entirety, the 'Uncharted Seas' opal ring presents an impressive boulder opal
Category
2010s Australian Contemporary Fashion Rings
Materials
Opal, 18k Gold, White Gold
Natural Untreated Australian 32.73ct Boulder Opal Pendant Necklace 18K Gold
Located in Sydney, AU
, untreated boulder opal from the opal field known for many types of opals, including “Galaxy,” the largest
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Yellow Gold, 18k Gold
Free Shipping
H 1.99 in W 0.79 in
Australian Natural Untreated Boulder Opals Necklace in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
of stunning boulder opals (0.77ct) ethically sourced from our Jundah-Opalville, Queensland mines. Set
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 16.30ct Boulder Opal Diamonds Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
A romantic and glamorous statement piece the ‘Love Walked In’ opal pendant features an electrifying
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 0.9 in W 0.77 in
Natural Untreated Australian 6.65ct Boulder Opal Diamonds Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
Extremely romantic and glamorous, ‘Madame Butterfly’ opal pendant features an attractive and
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 0.85 in W 0.52 in
Natural Untreated Australian 9.50ct Boulder Opal Diamonds Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
The impressive ‘You Make My Dreams’ boulder opal pendant (9.50ct) exudes modern elegance and is
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Diamond, 18k Gold, White Gold
Free Shipping
H 1.01 in W 0.6 in
Natural Untreated Australian 22.45ct Boulder Opal Pendant Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
The “Special Vision” opal pendant is quite the eye-catching piece featuring a gracious boulder opal
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Diamond, Opal, Yellow Gold, 18k Gold
Free Shipping
H 1.89 in W 0.56 in
Solid Natural Untreated Australian 13.95 Black Opal Ring 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
natural opal ring is a limited edition of one.
This opal ring is new.
PARTICULARS:
Metal: 18K yellow
Category
2010s Australian Contemporary Engagement Rings
Materials
Black Opal, Opal, Yellow Gold, 18k Gold
Natural Untreated Australian 0.35ct Black Opal Pendant Necklace 18K White Gold
By Renata Bernard
Located in Sydney, AU
The 'Swan' pendant represents the elegance and strength of this rare bird. Lovely black opal
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Black Opal, 18k Gold, White Gold
Free Shipping
H 0.63 in W 0.37 in
Natural Untreated Australian 2.07ct Black Opal Pendant Necklace 18K White Gold
By Renata Bernard
Located in Sydney, AU
Full of strength and bravery is the wearer of the "Karleen" opal pendant, featuring an intriguing
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Black Opal, 18k Gold, White Gold
Free Shipping
H 0.95 in W 0.28 in
Australian Natural Untreated 12.84ct Black Opal Diamond Drop Earrings 18K Gold
By Renata Bernard
Located in Sydney, AU
The first blossoms of spring inspired the creation of “Snowdrops” opal earrings. This perfect
Category
2010s Australian Contemporary Drop Earrings
Materials
Diamond, Black Opal, Opal, White Gold, 18k Gold
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H 0.94 in W 0.6 in
Natural Untreated Australian 7.91ct Black Opal Earrings in 18K White Gold
By Renata Bernard
Located in Sydney, AU
Art Deco inspired yet utterly contemporary, “Te Amo” opal earrings recall the glamour of the 1920s
Category
2010s Australian Contemporary Dangle Earrings
Materials
Black Opal, Diamond, Opal, 18k Gold, White Gold
Free Shipping
H 0.91 in W 0.36 in
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
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, Black Opal, 18k Gold, Yellow Gold
Solid Natural Untreated Australian 2.16ct Black Opal Ring 18k White Gold
By Renata Bernard
Located in Sydney, AU
The ‘Florence’ opal ring features a simple and elegant design. Masterfully crafted in our elegant
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, Black Opal, 18k Gold, White Gold
Natural Untreated Australian 2.14ct Black Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
Symbolising the rustic beauty and perfect harmony of nature's colours, the "Stolen Beauty" opal
Category
2010s Australian Contemporary Cocktail Rings
Materials
Black Opal, Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 1.14ct Black Opal Ring in 18K White Gold
By Renata Bernard
Located in Sydney, AU
"Karina" opal ring is strikingly honest and powerful. It is all about the quality of its precious
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, Black Opal, White Gold, 18k 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
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, Black Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 11.16ct Boulder Opal Pendant Necklace 18K Gold
Located in Sydney, AU
Simple yet alluring, the ‘Amdis’ boulder opal pendant (11.16ct) is a minimal 18K white gold
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Diamond, White Diamond, 18k Gold, White Gold
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H 1.28 in W 0.63 in
Natural Untreated Australian 1.62ct Black Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
A symbol for never-ending beauty of colours "Rainbow-coloured dream" opal ring features an
Category
2010s Australian Contemporary Cocktail Rings
Materials
Black Opal, Diamond, Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 2.83ct Black Opal Ring 18 Karat White Gold
By Renata Bernard
Located in Sydney, AU
“Fire and Desire” black opal ring epitomises the paradox of passionate love. This exceedingly rare
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, Blue Sapphire, Black Opal, White Gold, 18k Gold
Natural Untreated Australian Boulder Opals Necklace Set In 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
'There Are Fairies at The Bottom of My Garden' opal necklace represents the Australian wattle and
Category
1990s Australian Romantic Pendant Necklaces
Materials
Opal, 18k Gold, Yellow Gold
Free Shipping
H 2.11 in W 2.61 in
Natural Untreated Australian 19.46ct Boulder Opal Ring in 18k White Gold
By Renata Bernard
Located in Sydney, AU
is a solid, untreated boulder opal from the opal field known for many types of opals, including
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, 18k Gold, White Gold
Natural Untreated Australian 5.43ct Boulder Opal Pendant Necklace 18 Karat Gold
By Renata Bernard
Located in Sydney, AU
Absolutely ethereal and breathtaking is the wearer of the Elysium boulder opal (5.43ct) pendant
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Gold
Free Shipping
H 1.15 in W 0.35 in
Natural Untreated Australian 7.89 Carat Boulder Opal Pendant Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
‘Garden of Imagination’ is a jewel for the self-assured and independent woman. This opal pendant
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Yellow Gold
Free Shipping
H 0.66 in W 0.45 in
Natural Untreated Australian 10.96ct Boulder Opal Earrings in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
natural Australian opal earrings are limited edition of one.
Please, note that the fine opal gems at this
Category
2010s Australian Contemporary Dangle Earrings
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.45 in W 0.43 in
Natural Untreated Australian 6.87ct Boulder Opal Pendant Necklace 18K Rose Gold
By Renata Bernard
Located in Sydney, AU
'My Cherie Amour' opal pendant is an expression of true love. The masterly angulated boulder opal
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Rose Gold
Free Shipping
H 1.18 in W 0.63 in
Natural Untreated Australian 2.65Ct Boulder Opal Diamonds Halo Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
love. The intense colours of natural boulder opal (2.65ct) are complemented by the inner halo of 42
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 0.81 in W 0.74 in
Solid Natural Untreated Australian 2.57ct Black Opal Ring in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
The graceful and exquisite ‘Love at First Kiss’ ring features an immaculate black opal (2.57ct
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, Black Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 5.07ct Boulder Opal Ring in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
Vivid and guaranteed to be a show-stopper, the "Miss Curious" opal ring features an electrifying
Category
2010s Australian Contemporary Cocktail Rings
Materials
Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 13.16ct Boulder Opal Cufflinks in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
"The Godfather" opal cufflinks present gorgeous vivid blue boulder opals (13.16ct) sourced from
Category
2010s Australian Contemporary Cufflinks
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 0.58 in W 0.5 in
Natural Untreated Australian 4.99ct Boulder Opal Pendant Necklace 18K Rose Gold
By Renata Bernard
Located in Sydney, AU
"Josephine" opal pendant is named after Josephine Baker. Like her, it is strong and defined
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, 18k Gold, Rose Gold
Free Shipping
H 1.29 in W 0.48 in
Natural Untreated Australian Pipe Opal/Diamond Engagement Ring 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
The centrepiece of our “Santa Barbara” opal ring is a 1.57 carat natural light opal from our own
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Solid Natural Untreated Australian 3.85ct Black Opal Ring in 18k White Gold
By Renata Bernard
Located in Sydney, AU
The ‘Midnight Kiss’ opal ring features a graceful and unique design. Masterfully handcrafted in our
Category
2010s Australian Contemporary Engagement Rings
Materials
Black Opal, Opal, White Gold, 18k Gold
Natural Untreated Australian 9.19ct Boulder Opal Earrings in 18K Yellow Gold
By Renata Bernard
Located in Sydney, AU
"Strictly Ballroom" opal earrings are a subdued take on an Australian cinema classic. Magnificent
Category
2010s Australian Contemporary Dangle Earrings
Materials
Diamond, Opal, Yellow Gold, 18k Gold
Free Shipping
H 1.16 in W 0.29 in
Natural Untreated Australian 5.19 Carat Boulder Opal Pendant Necklace 18k Gold
By Renata Bernard
Located in Sydney, AU
boulder opal (5.19ct). The natural gemstone sourced from Winton mines in Queensland, Australia, is
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Opal, Yellow Gold, 18k Gold, White Gold
Free Shipping
H 1.25 in W 0.53 in
Natural Untreated Australian 10.87ct Boulder Opal Dangle Earrings 18K White Gold
By Renata Bernard
Located in Sydney, AU
“Sunnfjord” opal earrings celebrate Norway’s majestic fjords. Bright as a Norwegian seascape
Category
2010s Australian Contemporary Dangle Earrings
Materials
Diamond, Opal, 18k Gold, White Gold
Free Shipping
H 1.24 in W 0.45 in
Australian Natural Untreated 17.53ct Pipe Opal Diamond Cocktail Ring 18K Gold
By Renata Bernard
Located in Sydney, AU
Mysterious and magical, “Deep Love” opal ring is evocative of an ocean dive on a lazy summer day. A
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, Yellow Gold, 18k Gold
Natural Untreated Australian 10.25ct Boulder Opal Diamond Ring 18K White Gold
By Renata Bernard
Located in Sydney, AU
“Amor de mi Vida” opal ring is destined to be the love of your life. A spectacular multicoloured
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, White Gold, 18k Gold
Natural Untreated Australian 4.94ct Boulder Opal Ring in 18K White Gold
By Renata Bernard
Located in Sydney, AU
Let “Rain Queen” opal ring cast her rainbow spell on you. The 4.94 carat multicolour opal from
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, 18k Gold, White Gold
Natural Untreated 5.08ct Australian Black Opal Diamond Ring in 18K White Gold
By Renata Bernard
Located in Sydney, AU
A sensual and romantic charm imbues the 'Silhouette of Desire' opal ring featuring an impressive
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, Black Opal, White Gold, 18k Gold
Natural Untreated Australian 0.23ct Black Opal and Diamond Ring 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
"Australian Daisy" opal ring presents a classic elegance look. It carries an impeccable black opal
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Opal, Black Opal, 18k Gold, Yellow Gold
Solid Natural Untreated Australian 1.38ct Boulder Opal Ring in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
beloved on your memorable day. This natural boulder opal ring is a limited edition of one. Designed by
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 8.72ct Boulder Opal Earrings in 18 K Yellow Gold
By Renata Bernard
Located in Sydney, AU
“Waltz of the Flowers” opal earrings present gorgeously colourful Winton boulder opals (8.72ct
Category
2010s Australian Contemporary Dangle Earrings
Materials
Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.61 in W 0.48 in
Solid Natural Untreated Australian 1.35ct Boulder Opal Ring in 18k Yellow Gold
By Renata Bernard
Located in Sydney, AU
Simple yet elegant, the ‘Crystal Cascade’ opal ring features a boulder opal (1.35ct) ethically
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, 18k Gold, Yellow Gold
Natural Untreated Australian 12.56ct Opal Drop Earrings in 18K Yellow White Gold
By Renata Bernard
Located in Sydney, AU
Striking and utterly beguiling, “Amor Eterno” opal earrings are impossible to miss. Natural boulder
Category
2010s Australian Contemporary Dangle Earrings
Materials
Opal, White Gold, 18k Gold, Yellow Gold
Free Shipping
H 1.01 in W 0.31 in
Australian Natural Untreated 4.21ct Boulder Opal Ring 18K White Gold Rose Gold
By Renata Bernard
Located in Sydney, AU
striking 4.21 carat boulder opal is embraced by an unusual rose and white gold twist. The ribbon-flash
Category
2010s Australian Contemporary Engagement Rings
Materials
Opal, 18k Gold, Rose Gold, White Gold
4.40 Carat Natural Yellow Opal
Located in Hua Hin, TH
Treatments: None
Gemologists Remarks: Natural, Untreated
This stone is available for direct purchase or for
Category
2010s Unknown Loose Gemstones
Materials
Opal
Natural Diamond 0.72CT Natural Opal 3.74CT 18KT White Gold Ring
Located in Antwerpen, BE
opal and adorned with 4.46 carats of natural diamonds in lustrous 18KT white gold. This enchanting
Category
2010s Belgian Modern Fashion Rings
Materials
Diamond, Opal, White Gold
GIA 2.79ct Natural Black Opal Diamond Platinum Ballerina Cocktail Ring
Located in Miami, FL
Black Opal, natural and untreated, double cabochon oval cut, prong set, weight approximately 2.79 carats
Category
1990s Retro Cocktail Rings
Materials
Diamond, Opal, Black Opal, Platinum
GIA 2.62ct Natural Black Opal Diamond Emerald 18 Gold Cluster Ring
Located in Paris, FR
a GIA certified 2,62 ct Black Opal, natural and untreated, double cabochon oval cut. The closed
Category
21st Century and Contemporary Unknown Cluster Rings
Materials
Diamond, Emerald, Black Opal, Gold, 18k Gold
Natural Australian 5.8ct Black Opal Diamond Cocktail Ring 18K Yellow White Gold
By Renata Bernard
Located in Sydney, AU
desirable of all colours in Australian opals. It is a natural, untreated gem with a distinctive colour play
Category
2010s Australian Contemporary Cocktail Rings
Materials
Diamond, Black Opal, Opal, Yellow Gold, 18k Gold, White Gold
Natural Australian 15.82ct Boulder Opal Necklace in 18K Yellow Gold with Diamond
By Renata Bernard
Located in Sydney, AU
. It is a solid, untreated boulder opal from the opal field known for many types of opals, including
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.37 in W 0.54 in
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Natural Untreated Opal For Sale on 1stDibs
On 1stDibs, you can find the most appropriate natural untreated opal for your needs in our varied inventory. Frequently made of gold, 18k gold and yellow gold, this item was constructed with great care. You can easily find a 48 antique edition and 178 modern creations to choose from as well. If you’re looking for a natural untreated 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. Creating a natural untreated opal has been a part of the legacy of many jewelers, but those produced by Renata Bernard, Eytan Brandes and Olivia Cummings are consistently popular. A natural untreated opal of any era or style can lend versatility to your look, but a version featuring opal, from our inventory of 149, is particularly popular. A cabochon version of this piece has appeal, but there are also oval cut and pear cut versions for sale. When shopping for a natural untreated opal, you’ll find that there are less available pieces for unisex or men today than there are for women.
How Much is a Natural Untreated Opal?
Prices for a natural untreated opal can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $68 and can go as high as $78,390, while this accessory, on average, fetches $5,600.
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