Australian Opal Brooch
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14K Gold & Australian Opal Brooch or Pin
Located in Philadelphia, PA
A very fine 14k gold and Australian opal doublet brooch or pin.
With a round doublet opal bezel
Category
20th Century Australian Retro Brooches
Materials
Opal, Gold, 14k Gold
Antique Australian Opal Bar Brooch, Circa 1910 - 1915
Located in ADELAIDE, SA
This Australian made 15k yellow gold antique double square bar brooch with a central twisted gold
Category
Vintage 1910s Australian Brooches
Materials
Opal, 15k Gold
Australian 8.01ct Boulder Opal, Emerald & 18K Gold Brooch
Located in MAIN BEACH, QLD
A froggy delight, this brooch is just adorable. Modelled from the Australian green tree frog, made
Category
Late 20th Century Australian Brooches
Materials
Opal, Emerald, Black Opal, Diamond, 18k Gold
Australian Opal Yellow Gold Pendant Brooch
Located in New York, NY
Australian opal yellow gold pendant brooch
Opal measures approximately 13 x 19.5 mm, 18 karat
Category
Late 20th Century Brooches
Materials
Opal, Yellow Gold, 18k Gold
Australian 4.29 Opal Doublet Brooch in 18K Yellow Gold
Located in Sydney, AU
Intricate and opulent, the ‘Florella’ opal doublet brooch (4.29ct) is skillfully set in a
Category
2010s Australian Contemporary Brooches
Materials
Opal, Yellow Gold, 18k Gold
Premium Quality Australian Four Opal Doublet Brooch in Sterling Silver
By Renata Bernard
Located in Sydney, AU
metal: Sterling Silver
This opal brooch arrives in a gun-metal aluminium box inside a paper orange box
Category
2010s Australian Contemporary Brooches
Materials
Opal, Sterling Silver
Free Shipping
H 1.24 in W 1.21 in
Art Nouveau Opal Gold Brooch Australian Precious Opal Unisex Arnould 1910 Brooch
By Edouard Aimé Arnould
Located in Berlin, DE
An exceptional piece - Art nouveau Opal Brooch from original catalogue of french jeweller Edouard
Category
Vintage 1910s French Art Nouveau Brooches
Materials
Crystal, Opal, Gold, 18k Gold
Free Shipping
W 0.4 in D 0.4 in L 2.88 in
Opal brooch gold Australian Natural Crystal Opal Art Nouveau Paris
By Edouard Aimé Arnould
Located in Berlin, DE
Aimé Arnould, circa 1910
opal origin - Australia
brooch measurements - 0.39 x 0.39 x 2.95 in / 10 x 10
Category
Vintage 1910s French Art Nouveau Brooches
Materials
Crystal, Opal, Gold, 18k Gold
Free Shipping
W 0.4 in D 0.4 in L 2.88 in
Opal brooch gold Australian Natural Crystal Opal Art Nouveau Paris
By Edouard Aimé Arnould
Located in Berlin, DE
Aimé Arnould, circa 1910
opal origin - Australia
brooch measurements - 0.39 x 0.39 x 2.95 in / 10 x 10
Category
Vintage 1910s French Art Nouveau Brooches
Materials
Opal, Crystal, Gold, 18k Gold
Free Shipping
W 0.4 in D 0.4 in L 2.88 in
Black Australian Opal & Diamond Swan Brooch/Pendant Platinum
Located in Dallas, TX
Black Australian Opal & Diamond Swan Brooch/Pendant in Platinum. The swan features a 21.83ct Black
Category
Vintage 1980s Brooches
Materials
Diamond, Opal, Platinum
Natural Australian 47.28ct Boulder Opal and Diamond Pendant Brooch, 18K Gold
By Renata Bernard
Located in Sydney, AU
Minded.
The gemstone at the centre of this opal pendant is an Australian boulder opal from Winton
Category
2010s Australian Contemporary Brooches
Materials
Diamond, Opal, 18k Gold, Yellow Gold
Free Shipping
H 1.87 in W 1.81 in
Australian Black Opal and Diamond Platinum Tie Tac Brooch Pin
Located in Montreal, QC
Finely detailed Platinum Australian Black Opal and Diamond Tie Tac Brooch, center securely nestled
Category
21st Century and Contemporary Modern Brooches
Materials
Diamond, Opal, Black Opal, Platinum
Australian Crystal Opal Emerald Diamond Ribbon Brooch Clip Pin
Located in Miami Beach, FL
Beautiful custom made platinum brooch. Featuring a 22c Crystal Opal in an emerald and diamond
Category
Vintage 1960s Unknown Brooches
Materials
Diamond, Emerald, Opal, Platinum
Bicolor Platinum/18k Gold Brooch-Pendant with Australian Opal, Unique
Located in Berlin, BE
yellow gold, this unique brooch-pendant is set with a stunning oval Australian opal that radiates a
Category
21st Century and Contemporary German Modern Brooches
Materials
Opal, 18k Gold, Platinum
Free Shipping
W 2.76 in L 3.35 in
French Victorian 39.00 Ct Australian Opal 6.00 Ct Rubies Large Brooch
Located in Napoli, IT
hallmarks from the period
Impressive 39.00 Ct Natural Australian Opal, rare size to come across set in this
Category
Antique Late 19th Century French Victorian Brooches
Materials
Opal, Ruby, 18k Gold
Free Shipping
H 1.3 in W 2.09 in
Unique 1960s Australian Mintabie Black Opal Natural Pearl Diamond Gold Brooch
Located in Miami Beach, FL
This large brooch features floral hand carved Mintabie black opal plaques, cognac diamonds, and
Category
Vintage 1960s Unknown Brooches
Materials
Diamond, Opal, Natural Pearl, Gold, 18k Gold
Free Shipping
W 4.5 in D 3 in
Antique Edwardian 5 Carat Australian Black Opal Brooch Pendant Yellow Gold 1900s
Located in Lisbon, PT
Antique Edwardian Australian Lightning Ridge Harlequin Precious Black Opal and White Opal Brooch
Category
Antique Early 1900s English Edwardian Brooches
Materials
Opal, Black Opal, 18k Gold, Yellow Gold, Gold
Free Shipping
W 0.63 in L 2.45 in
15.54 Carat Australian Boulder Opal Diamond Ruby 18k Yellow & White Gold Brooch
Located in Beverly Hills, CA
This fabulous brooch is adorned with a stunning 15.54 carat Boulder Opal from Australia. The Opal
Category
21st Century and Contemporary American Brooches
Materials
Diamond, Opal, Ruby, 18k Gold, White Gold, Yellow Gold
Free Shipping
L 2.75 in
72.25 Carat Australian Boulder Opal Platinum & 18k Y Gold Ship-at-Sea Brooch
Located in Beverly Hills, CA
. Surrounding the opal are delicate 0.83 carats of round brilliant-cut diamonds. The brooch is meticulously
Category
21st Century and Contemporary Brooches
Materials
Diamond, Opal, 18k Gold, Yellow Gold, Platinum
Free Shipping
W 1.15 in L 2.5 in
Platinum Australian Black Boulder Opal and Diamond Pin Pendant Flowers
Located in Big Bend, WI
Incredible platinum pin/pendant featuring a large Australian black boulder opal. The opal has blue
Category
21st Century and Contemporary Brooches
Materials
Diamond, Opal, Platinum
Australian Indicolite Tourmaline & Seed Pearl Bar Brooch Circa 1910
Located in ADELAIDE, SA
Australian made bar brooch featuring an indicolite tourmaline with floral scrolls set with half
Category
Vintage 1910s Australian Edwardian Brooches
Materials
Pearl, Tourmaline, Indicolite, 15k Gold
Fabulous Art Nouveau Black Starr Frost Platinum Filigree 100ct Australian Opal
By Black, Starr & Frost
Located in St. Petersburg, FL
One of the largest and most magnificent natural Australian opal cabochons we have ever seen, set in
Category
Antique Late 19th Century American Art Nouveau Brooches
Materials
Diamond, Opal, Platinum
Art Nouveau Floral Enamel Opal Brooch by Krementz
By Krementz & Co
Located in Boston, MA
A handmade art nouveau period enameled flower brooch centered by an Australian opal.
The leaves
Category
Antique Early 1900s North American Art Nouveau Brooches
Materials
Opal, Enamel
Magnificent Coral Branch Opal Diamond Sapphire Brooch
Located in Beverly Hills, CA
depleted population making this quality very difficult to find. It is accented by 4 australian opals with
Category
21st Century and Contemporary American Brooches
Materials
Coral, Diamond, Opal, Sapphire, 18k Gold, Yellow Gold
Australian White Opal Turquoise Ruby Emerald Gold Egyptian-Style Carving Pendant
Located in Beverly Hills, CA
A special piece of art made of a natural piece of Australian white opal. It is hand carved
Category
21st Century and Contemporary American Brooches
Materials
Ruby, Turquoise, Emerald, Opal, Gold, 18k Gold, Yellow Gold
Free Shipping
W 1.9 in L 2.5 in
Forget Me Knot Bow Brooch Pendant with Fire Opal and Yellow Diamonds
Located in Brisbane, AU
One of a kind Forget Me Knot Bow brooch / pendant
Unisex design
18ct yellow and white gold
Category
21st Century and Contemporary Australian Artisan Brooches
Materials
Yellow Diamond, Opal, Fire Opal, Yellow Gold, 18k Gold, White Gold
Modern Coober Pedy Opal Gold Ribbon Brooch Circa 1980
Located in ADELAIDE, SA
Gold bar brooch with a Coober Pedy solid light opaque opal. The opal is bezel set with curved flat
Category
Late 20th Century Modern Brooches
Materials
Opal, 18k Gold
Boulder Opal Diamond Gold Flower-Bouquet Brooch-Pendant
Located in Beverly Hills, CA
Australian boulder opal with great play of color, showing strong flashes of greens and blue. The other
Category
21st Century and Contemporary American Brooches
Materials
Diamond, Opal, Gold, 18k Gold, Yellow Gold, Platinum
Victorian Revival 3.00 Carat Opal Yellow Gold Brooch Pendant
Located in Stamford, CT
red Australian opals. Can be worn as a brooch or pendant. Circa 1940.
27 round bluish green reddish
Category
Mid-20th Century Brooches
Materials
Opal, Gold, 14k Gold, Yellow Gold
Bochic “Capri” Opal, Sapphire & Ruby Brooch Set In 18K Gold & Silver
Located in New York, NY
Bochic “Capri” Opal, Sapphire & Ruby Brooch Set In 18K Gold & Silver
Blue Opal from Australia
Category
21st Century and Contemporary Thai Baroque Brooches
Materials
Opal, Ruby, Sapphire, Blue Sapphire, 18k Gold, Silver
NWT $46, 800 Rare 18KT Black Opal Fancy Parrot Diamond Sapphire Emerald Brooch
Located in New York, NY
Black Opal and Diamond Parrot Brooch Pin. Brooch features Magnificent Rare Color Changing Black Opal
Category
21st Century and Contemporary Brooches
Materials
Diamond, Opal, Blue Sapphire, Black Opal, Emerald, Onyx, Sapphire, Gold,...
Elizabeth Gage 1994 London Orchid Agate Pendant Brooch 18Kt Gold With Fire Opal
By Elizabeth Gage
Located in Miami, FL
Orchid flower pendant-brooch designed by Elizabeth Gage.
Exceptional pendant-brooch, created in
Category
1990s English Modernist Brooches
Materials
Agate, Opal, Fire Agate, Fire Opal, Gold, 18k Gold, Yellow Gold
Free Shipping
W 3.25 in D 0.71 in L 4.1 in
Vintage 18k Gold 11.60ctw Large Opal & Diamond Tennis Racket Brooch Pin Pendant
Located in Montclair, NJ
yellow gold featuring a large, very colorful, oval cabochon opal. The Australian opal stone displays
Category
Mid-20th Century Unknown Brooches
Materials
Diamond, Opal, Yellow Gold, 18k Gold, White Gold
Free Shipping
W 1.12 in D 0.2 in L 2.74 in
Bochic “Orient” Opal, Ruby & Multi Color Sapphires Set Brooch 18K Gold & Silver
Located in New York, NY
Bochic “Orient” Opal, Ruby & Multi Color Sapphires Set In 18K Gold & Silver
Natural Australian
Category
21st Century and Contemporary Thai Belle Époque Brooches
Materials
Pink Sapphire, Green Sapphire, Blue Sapphire, Sapphire, Ruby, Opal, Silv...
Oscar Heyman Gold 30 Carat One of a Kind Black Opal Snacking Fish Brooch
By Oscar Heyman
Located in New York City, NY
Australian black opal weighing 30.63cts. This unique piece also contains 97 round diamonds (1.08cts, F/ VS
Category
2010s American Contemporary Brooches
Materials
Diamond, Opal, Gold, Platinum
Bochic “Orient” Opal & Multi Color Sapphire Brooch Set In 18K Gold & Silver
Located in New York, NY
Bochic “Orient” Opal & Multi Color Sapphire Brooch Set In 18K Gold & Silver
White Ethiopian Opal
Category
21st Century and Contemporary Thai Baroque Brooches
Materials
Pink Sapphire, Purple Sapphire, Green Sapphire, Yellow Sapphire, Sapphir...
Rhoda Wager Arts & Crafts Brooch
Located in London, GB
An impressive Arts & Crafts brooch by Rhoda Wager.
The fabulous precious opal is approximaety 60
Category
Vintage 1910s Australian Arts and Crafts Brooches
Materials
Opal, 14k Gold
18 Karat Yellow Gold Black Opal and Gemstone Moth Brooch and Necklace Clasp
By Llyn strong
Located in Greenville, SC
An 18k yellow gold brooch and "Modullyn" clasp bezel set with a 5.5 carat Australian Lightning
Category
2010s American Contemporary Brooches
Materials
Alexandrite, Aquamarine, Blue Diamond, Yellow Diamond, Garnet, Multi-gem...
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W 2 in D 0.5 in L 2.85 in
Rare Victorian Mining Brooches
Located in New York, NY
ore brooch. $2750
19th Century Floating opals bar brooch. $1550
Excellent condition.
Category
Antique Late 19th Century Victorian Brooches
Materials
Opal, Sterling Silver, 14k Gold
Yellow Gold Opal Vintage Stickpin - 14k Oval Cabochon 1.70ct Solitaire
Located in Greensboro, NC
Era: Vintage
Metal Content: 14k Yellow Gold
Stone Information
Natural Opal
Carat(s): 1.70ct
Cut
Category
21st Century and Contemporary Brooches
Materials
Opal, 14k Gold, Yellow Gold
Opal and Sapphire "El Pescado" Broach by Andrew Glassford
By Andrew Glassford
Located in Dallas, TX
worn without the Opal drop. A new drop can also be made or worn to make the El Pescado Brooch an even
Category
21st Century and Contemporary American Contemporary Brooches
Materials
Diamond, Emerald, Opal, Sapphire, 18k Gold
Rare Louis Comfort Tiffany Citrine Brooch
By Louis Comfort Tiffany
Located in Brisbane, QLD
.
"Oval filigree brooch with an oval Australian black opal at the centre and a rosette border; this is one
Category
Early 20th Century American Art Nouveau Brooches
Materials
Citrine, Gold, 18k Gold, Yellow Gold
33.53ct Australian Boulder Opal Pendant Brooch Combo 18K Gold V1127
Located in Osprey, FL
Adorn yourself with this magnificent 33.53ct Australian Boulder Opal pendant brooch combo! This
Category
2010s American Pendant Necklaces
Materials
Opal, 18k Gold
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H 0.47 in W 1 in L 2.04 in
Vintage 14K Yellow Gold Australian Opal & Diamond Flared Brooch Pendant Necklace
Located in Montclair, NJ
gold. It features a flared floral design set with a large Australian opal at its center and adorned
Category
21st Century and Contemporary Pendant Necklaces
Materials
Diamond, Opal, Yellow Gold, 14k Gold
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H 1.2 in W 1.3 in L 18 in
5.93ct Solid Australian Opal Freeform Butterfly Pendant Brooch 14K Gold 11g+
Located in Osprey, FL
Adorn yourself with this exquisite one-of-a-kind Solid Australian Opal Butterfly Pendant / Brooch
Category
2010s American Pendant Necklaces
Materials
Opal, Sapphire, Blue Sapphire, Yellow Sapphire, Tourmaline, Tsavorite, A...
Australian Boulder Opal Diamond Gold Pendant
Located in Beverly Hills, CA
A superb display of color. This fantastic fine opal from Australia weighs an impressive 15.42
Category
21st Century and Contemporary American Pendant Necklaces
Materials
Diamond, Opal, Gold, 18k Gold
9.6 Carat Solid Australian Carved Opal and Diamond 18 Carat Gold Pendant Brooch
Located in Hamilton, AU
Piper Pendant and Brooch Details
The solid Australian opal is estimated to weight 9.6 carats and
Category
20th Century Unknown Modern Pendant Necklaces
Materials
Opal, Diamond, Crystal, Gold, 18k Gold, Yellow Gold
Free Shipping
W 0.87 in L 1.58 in
'Opal Blossom' Antique 17.7ct Black Opal & 8.03ct Diamond Pendant and Brooch
Located in MAIN BEACH, QLD
pendant and also a brooch. Centred with a heart of 17.7ct black opal and set in an 18K gold and palladium
Category
Vintage 1930s Australian Pendant Necklaces
Materials
Diamond, Opal, Black Opal, 18k Gold, Palladium
Gerard McCabe Lorikeet Australian Lightning Ridge Black Opal & Gemstone Pendant
Located in ADELAIDE, SA
brooch. This opal is consistent with seam opal from the Grawin Field in Lightning Ridge, Australia
Category
2010s Australian Modern Pendant Necklaces
Materials
Black Opal, Diamond, Emerald, Opal, Ruby, Blue Sapphire, Yellow Sapphire...
Free Shipping
W 0.91 in L 1.97 in
Big Opal Boulder Australian Fine gemstone Freeform 47 ct Neon Blue SSEF cert
By Alexey Gabilo
Located in Berlin, DE
pendant/brooch.
Colorful boulder noble Opal a freeform shape.
Opal origin - Queensland, Australia
Opal
Category
2010s Australian Artisan Pendant Necklaces
Materials
Opal
W 0.87 in D 0.2 in L 1.97 in
Eostre Fire Opal, South Sea Pearl and Yellow Diamond Pendant Brooch in 18K Gold
Located in Melbourne, AU
another Pendant inspired by " Sapphire Moonlight". The Fiery Fire opal really matches the Golden South Sea
Category
2010s Australian Contemporary Pendant Necklaces
Materials
Yellow Diamond, Opal, Fire Opal, Diamond, South Sea Pearl, 18k Gold
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D 0.54 in
Space Age Modernist 33 Carat Opal Diamond Necklace
Located in Santa Barbara, CA
An incredible 33 carat Australian Opal necklace adorned with over 8 carats of near-flawless
Category
Mid-20th Century Artisan Pendant Necklaces
Materials
Diamond, Opal, White Gold
South Sea White to Golden Ombred Pearl Necklace
By Llyn strong
Located in Greenville, SC
.
Shown with 18k Yellow Gold Australian Black Opal and Gemstone Moth Brooch sold separately
Category
2010s American Romantic Beaded Necklaces
Materials
Pearl, 18k Gold
Carved Chalcedony Sculpture and Opal in 18kt Gold Pendant, Enhancer, and Brooch
Located in Logan, UT
design. The design is accented perfectly by a large, marquis-shaped Australian crystal opal. The balance
Category
21st Century and Contemporary American Contemporary Brooches
Materials
Chalcedony, Diamond, Opal, 18k Gold, Platinum, Gold
Giulians 18k Australian Boulder Opal and Diamond Brooch
By Giulians
Located in Sydney, NSW
Giulians contemporary handcrafted 18 karat 56.44ct Australian Boulder opal and diamond brooch. The
Category
2010s Australian Contemporary Brooches
Materials
White Diamond, Opal, 18k Gold
Giulians Contemporary 18k 2.00ct White Opal and Diamond Brooch
By Giulians
Located in Sydney, NSW
Giulians contemporary 18 karat white and yellow gold 2.00ct white opal brooch. The natural solid
Category
2010s Australian Contemporary Brooches
Materials
White Diamond, Opal, 18k Gold
Free Shipping
W 0.34 in D 0.33 in L 2.48 in
Cloisonnén Enamel 22 and 24 Karat Yellow Gold Boulder Opal Brooch
Located in Melbourne, AU
Enamel Brooch inlaid with 24Karat Yellow Gold has a central Boulder Opal of 17mm x 6.2mm. It is
Category
2010s Australian Contemporary Brooches
Materials
Opal, Yellow Gold, Enamel
Vintage 9 Karat Yellow Gold Opal Modernist Freeform Brooch Pin
Located in Sydney, NSW
A vintage 9k yellow gold abstract Andamooka crystal opal brooch - a freeform Andamooka crystal opal
Category
Vintage 1980s Australian Modernist Brooches
Materials
Opal, Gold, 9k Gold, Yellow Gold
Cloisonne Enamel 24 and 22 Karat Yellow Gold Boulder Opal Brooch
Located in Melbourne, AU
This cloisonné enamel brooch named BOULDER was inspired by the boulder opal of 4.92 carats from the
Category
2010s Australian Contemporary Brooches
Materials
Opal, 22k Gold, Enamel, Yellow Gold
Susan Lister Locke Australian Opal Pendant/Pin set in 18 Karat Gold
By Susan Lister Locke
Located in Nantucket, MA
This rare and alluring Australian Opal may be worn on a lapel or displayed as a pendant. The
Category
2010s American Contemporary Brooches
Materials
Opal, 18k Gold, Gold
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Australian Opal Brooch For Sale on 1stDibs
You are likely to find exactly the australian opal brooch you’re looking for on 1stDibs, as there is a broad range for sale. 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. Find an antique version now, or shop for 30 vintage or 16 modern creation for a more contemporary example of these cherished accessories. You’re likely to find the perfect australian opal brooch among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. Creating a australian opal brooch has been a part of the legacy of many jewelers, but those produced by Edouard Aimé Arnould, Giulians and Renata Bernard are consistently popular. 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 australian opal brooch for sale are for women, but there are 16 pieces available to browse for men.
How Much is an Australian Opal Brooch?
Prices for a australian opal brooch can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $182 and can go as high as $48,560, while this accessory, on average, fetches $4,875.
Finding the Right brooches for You
Antique and vintage brooches, which are decorative jewels traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.
Given their long history, brooches have expectedly taken on a variety of different shapes and forms over time, with jewelers turning to assorted methods of ornamentation for these accessories, including enameling and the integration of pearls and gemstones.
Cameo brooches that originated during the Victorian age are characterized by a shell carved in raised relief that feature portraits of a woman’s profile, while 19th-century micromosaic brooches, comprising innumerable individually placed glass fragments, sometimes feature miniature depictions of a pastoral scene in daily Roman life.
At one time, brooches were symbols of wealth, made primarily from the finest metals and showcasing exquisite precious gemstones. Today, these jewels are inclusive and universal, and you don’t have to travel very far to find an admirer of brooches. They can be richly geometric in form, such as the ornate diamond pins dating from the Art Deco era, or designer-specific, such as the celebrated naturalistic works created by Tiffany & Co., the milk glass and gold confections crafted by Trifari or handmade vintage Chanel brooches of silk or laminated sheer fabric.
Brooches are versatile and adaptable. These decorative accessories can be worn in your hair, on hats, scarves and on the lower point of V-neck clothing. Pin a dazzling brooch to the lapel of your blazer-and-tee combo or add a cluster of smaller pins to your overcoat. And while brooches have their place in “mourning jewelry,” in that a mourning brooch is representative of your connection to a lost loved one, they’re widely seen as romantic and symbolic of love, so much so that a hardcore brooch enthusiast might advocate for brooches to be worn over the heart.
Today, find a wide variety of antique and vintage brooches on 1stDibs, including gold brooches, sapphire brooches and more.
Questions About Australian Opal Brooch
- What is an Australian opal?1 Answer1stDibs ExpertNovember 2, 2021Today, Australia and Ethiopia are the two largest producers of opals. Historically, most of the world’s opals were mined in South Australia. The stone is so closely associated with Australia that in 1993 it became the national gemstone. 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. Shop a collection of vintage and modern Australian opal jewelry from some of the world’s top jewelers on 1stDibs.
- 1stDibs ExpertAugust 17, 2021An Australian boulder opal is an opal mined from a large ironstone boulder under the ground. This type of opal is the second most valuable opal behind the black opal. Spot an Australian boulder opal by checking for a solid layer of brown ironstone left on the back of the stone. Shop Australian boulder opals on 1stDibs.
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