Lapis, Aquamarine and Diamond Brooch Pin
Located in Brisbane City, QLD
An exceptional diamond, aquamarine and lapis brooch pin set in a handmade silver setting.
20th Century American Brooches
Aquamarine, Diamond, Lapis Lazuli, Silver
Lapis, Aquamarine and Diamond Brooch Pin
Located in Brisbane City, QLD
An exceptional diamond, aquamarine and lapis brooch pin set in a handmade silver setting.
Aquamarine, Diamond, Lapis Lazuli, Silver
Edwardian 14 Karat Gold and Aquamarine Filigree Bow Tie Brooch or Pin
Located in Philadelphia, PA
A fine Edwardian gold and aquamarine pin in the form of a bow tie. With a round light blue aquamarine gemstone set in a gold filigree setting.
Aquamarine, 14k Gold
Antique Art Deco 5.33 TCW Platinum, Aquamarine & Diamond Brooch or Bar Pin
Located in Philadelphia, PA
A fine Art Deco aquamarine and diamond brooch. In a platinum setting.
Aquamarine, Diamond, Platinum, 14k Gold, White Gold
Retro Period, Gold and Aquamarine Brooch Pin
Located in Brisbane City, QLD
A beautiful Retro period gold brooch set with an octagonal cut aquamarine. This pin is finely crafted from twisted 10 karat yellow gold to form a spiral, with the centre set with a '...
Aquamarine, Gold, 10k Gold, Yellow Gold
Antique Deco Sailfish Aquamarine Diamond Platinum Brooch Pin
Located in Miami, FL
This glamorous Antique art deco aquamarine diamond brooch pin is crafted in platinum and weighs approx. 23.3 grams.
Aquamarine, Diamond, Platinum
Art Deco Diamond & Aquamarine Brooch Pin by Kohn
Located in Brisbane City, QLD
To the centre of the pin is a rather large princess cut aquamarine weighing 8.80 carats and has been classed as 'bright mid blue eye clean with some light facet wear'.
Aquamarine, Diamond, Gold, 14k Gold, Yellow Gold, Platinum
Georgian Aquamarine 15 Carat Gold Brooch or Pendant
Located in Chipping Campden, GB
This gorgeous pendant brooch is modelled in 15carat yellow gold and is set with aquamarine stones.
Aquamarine, Gold
Turn of the Century, Aquamarine, Turquoise & Diamond Brooch Pin
Located in Brisbane City, QLD
This charming brooch pin has been crafted from 18 karat yellow gold and silver and then set with diamonds, turquoise and a single aquamarine.
Aquamarine, Diamond, Turquoise, 18k Gold, Silver
Platinum 38.9ctw GIA Cushion Cut Aquamarine Diamond Pin Brooch Enhancer Pendant
Located in Montclair, NJ
Magnificent perfectly bezel set aquamarine in platinum (Very hard to do) with fiery old cut diamond frame.
Aquamarine, Diamond, Platinum
Yellow Gold Citrine Aquamarine Buddha Head Brooch - 18k 5.80ctw Carved Pin
Located in Greensboro, NC
Metal Content: 18k Yellow Gold Stone Information Natural Citrine Treatment: Heating Cut: Carved Color: Yellow Natural Aquamarine Treatment: Heating Carat(s): 2.60ct Cut: Pear Color...
Aquamarine, Citrine, 18k Gold, Yellow Gold
Vintage Retro Yellow Gold & Platinum 5.65ctw Aquamarine w/ Diamond Pin Brooch
Located in Montclair, NJ
Material: Solid 18k Yellow Gold w/ Platinum Baskets Total Weight: 9.03 Grams Overall Height: 31.4mm (1.2") (approx. north to west w/ the pin running horizontally) Overall Width: 36.3...
Aquamarine, Diamond, Gold, 18k Gold, Yellow Gold, Platinum
Platinum and Diamond Bar Pin or Brooch
Located in Washington Depot, CT
Vintage Platinum and Diamond Bar Pin/Brooch This exquisite brooch features three round brilliant cut diamonds in its center (.08 ct. each), 12 old mine cut diamonds (.04 ct. each) a...
Platinum
Retro Carved Yellow Bakelite Brooch or Pin
Located in Philadelphia, PA
A very fine Bakelite brooch. Art Deco style with deeply carved decoration.
Antique Art Deco Tiffany & Co. 14K Yellow Gold Aquamarine Ribbon Bow Brooch Pin
By Tiffany & Co.
Located in Addison, TX
Country of Manufacture: United States Number of Gemstones: 5 Closure: Traditional Brooch Pin Clasp Tiffany Pouch Included! Condition: Excellent vintage estate condition with light su...
Aquamarine, Gold, 14k Gold, Yellow Gold
Vintage 14k White Gold GIA 13.70ctw High Quality Aquamarine & Diamond Pin Brooch
Located in Montclair, NJ
Material: Solid 14k White Gold Total Weight: 11.80 Grams Overall Height: 21.1mm (0.83") (approx. north to west w/ the pin running horizontally) Overall Width: 52.4mm (2") (east to we...
Aquamarine, Diamond, Gold, 14k Gold, White Gold
Aquamarine and Sapphire Brooch
Located in New York, NY
Aquamarine and Sapphire Brooch A yellow gold brooch set with an emerald cut aquamarine accented by round cut sapphires.
Aquamarine, Sapphire, 18k Gold
Aquamarine and Pearl Antique Brooch
Located in Bethesda, MD
Metal: 14K Yellow Gold Primary Stone: Cushion-Cut Aquamarine, Approx. 3 Carats Accent Stones: Seed Pearls, Diamonds Dimensions: 0.75 in. x 1 in.
Aquamarine, Pearl
9 Karat Yellow Gold Cameo Brooch or Pin
Located in Washington Depot, CT
Vintage 9 Karat Yellow Gold Cameo Brooch/Pin This lovely pin features an elegant cameo 18 mm x 12 mm set in classic 9K yellow gold.
Yellow Gold
Retro Aquamarine & Diamond Brooch
Located in New York, NY
Retro Aquamarine & Diamond Brooch A 14 karat two tone gold brooch set with a large center emerald cut aquamarine accented by round cut diamonds Measurements: 2" x 1.5"
Aquamarine, Diamond, Gold, 14k Gold, White Gold, Yellow Gold
10 Karat Yellow Gold Filigree Brooch or Pin
Located in Washington Depot, CT
Vintage 10 Karat Yellow Gold Filigree Brooch/Pendant- This lovely brooch features four blue topaz stone set in beautifully detailed 10K yellow gold filigree.
Topaz, Yellow Gold
Victorian 10 Karat Gold & Diamond Star Brooch or Pin
Located in Philadelphia, PA
A round rose cut white diamond is prong set at the center of the pin. Simply a wonderful, antique brooch! Date: 19th Century Overall Condition: It is in overall good, as-pictured,...
Diamond, Gold
Aquamarine & Green Garnet Diamond Pave Dove Bird 18K Two Tone Gold Pin Brooch
By Unbranded
Located in Tysons, VA
Dimensions: 7.50x4.70x0.80cm Color: 18K Rose Gold 1 Aquamarine 2.46 CT 416 Fancy Diamonds 6.33 CT 110 Green Garnet 1.19 CT 1 Ruby 0.03 CT 18KR 25.83 GM 18K Gold & Precious Diamond &...
Aquamarine, Diamond, Ruby, 18k Gold, Rose Gold
Retro Aquamarine & Ruby Brooch
Located in New York, NY
Ca. 1940. Aquamarine - approximately 25 cts.
Aquamarine, Ruby, Rose Gold, 14k Gold
Eisenberg Vintage Gold Plated Modernist Abstract Pin Or Brooch
By Eisenberg
Located in North Miami, FL
This sculptural form and au courant signed vintage modernist Eisenberg pin is forever. This is a most unusual work of the outstanding jewelry company that specialized in fabulous rhi...
Gold Plate
Seaman Schepps Aquamarine, Diamond Brooch
By Seaman Schepps
Located in New York, NY
Seaman Schepps aquamarine, diamond and" synthetic ruby" brooch in platinum and base metal.
Aquamarine, Diamond, Platinum
Vintage Eisenberg Ice 2000 Sapphire Aquamarine Crystal Flower Pin Brooch, Silver
By Eisenberg
Located in Milford, DE
Elevate your ensemble with the timeless elegance of this vintage Eisenberg Ice pin! Crafted in a radiant silver tone, this exquisite brooch showcases a dazzling flower adorned with...
Crystal
$62,399Sale Price|20% Off
1960s Seaman Schepps GIA Aquamarine Diamond 18 Karat Gold Brooch Pin
By Seaman Schepps
Located in Miami, FL
Pin Measurement: 40mm x 30mm Accompanied by GIA Aquamarine Identification Report # 1196287790 and a professional appraisal document.
Diamond, Turquoise, 18k Gold, Yellow Gold, Gold
Aquamarine Hypercalmous Carved 18K Brooch
By Diane Griswold Johnston
Located in Cohasset, MA
18K aquamarine seahorse pin 2 x21/2" wide with sapphire eye
Aquamarine, 18k Gold
14 Karat Yellow Gold Freeform Leaf Brooch or Pin
Located in Stamford, CT
14 Karat Yellow Gold Free Form Leaf Brooch / Pin 3.60 grams total weight.
14k Gold
Vintage Eisenberg Ice 2000 Sapphire Aquamarine Crystal Flower Pin Brooch, Silver
By Eisenberg
Located in Milford, DE
Elevate your ensemble with the timeless elegance of this vintage Eisenberg Ice pin! Crafted in a radiant silver tone, this exquisite brooch showcases a dazzling flower adorned with...
Crystal
Mikimoto Modernist 14k Gold & Akoya Pearl Brooch or Pin
By Mikimoto
Located in Philadelphia, PA
A fine Japanese Modern gold & pearl brooch. By Mikimoto. In 14k gold. Set with 8 round white Akoya pearls.
Pearl, 14k Gold
Vintage Tiffany & Co. Sterling Silver Figural Leaf Brooch or Pin
By Tiffany & Co.
Located in Philadelphia, PA
A fine signed Italian silver brooch or pin. By Tiffany & Co. In sterling silver.
Sterling Silver
Signed 14k Gold & Diamond Butterfly Pea Flower Pin or Brooch
Located in Philadelphia, PA
A very fine signed gold and diamond brooch. With two finely modeled Butterfly Pea flowers (Centrosema Virginianum) in 14k yellow gold.
Diamond, 14k Gold
Cartier Aquamarine and Diamond Brooch
By Cartier
Located in New York, NY
This rare Cartier Paris aquamarine brooch with its bold diamond chevron patterning dates from the 1930s, when designers created a dynamic series of jewels that featured these limpid ...
Aquamarine, Diamond, White Diamond, Platinum
Tiffany & Co Retro Aquamarine Gold Brooch
By Tiffany & Co.
Located in New York, NY
Retro 14k gold brooch by Tiffany & Co, with 8.2 x 6mm aquamarine.
Aquamarine, Gold
Vintage Retro Aquamarine Diamond 18K Gold Ribbon Pin
Located in Miami, FL
Stunning Retro 1950S Vinatge 18K Yellow Gold Ribbon Brooch with Starburst Strokes decorated with Natural Diamonds centered with a GIA-certified genuine Ocean Blue Aquamarine weighing...
Aquamarine, Diamond, 18k Gold
Georg Jensen Sterling Silver "Grapes" Brooch or Pin No. 217B
By Georg Jensen
Located in Philadelphia, PA
A fine Georg Jensen sterling silver pin or brooch. Model no. 217B (part of the 'Grapes' collection).
Sterling Silver
Edwardian Aquamarine & Diamond Brooch Circa 1900s
Located in ADELAIDE, SA
A beautiful Edwardian ornate brooch crafted in sterling silver and yellow gold featuring a central bright aquamarine upon a fine silver lattice wire-work base topped with yellow gold...
Aquamarine, Diamond, 15k Gold, White Gold, Silver
Cartier Art Deco diamond and aquamarine brooch
By Cartier
Located in New York, NY
An Art Deco aquamarine bar brooch with geometric diamond brackets in platinum.
Aquamarine, Diamond, Platinum
Georg Jensen Sterling Silver "Grapes" Brooch or Pin No. 217A
By Georg Jensen
Located in Philadelphia, PA
A fine Georg Jensen sterling silver pin or brooch. Model no. 217A (part of the 'Grapes' collection).
Sterling Silver
Signed Damiani 18k Gold & Diamond Crab Shaped Brooch or Pin
By Damiani
Located in Philadelphia, PA
A fine signed 18K gold & diamond figural brooch or pin. By Damiani, the renowned Italian jewelers.
Diamond, 18k Gold
Antique 'Gold Rush' Montana Gold Watch Holder Pin or Brooch
Located in Philadelphia, PA
A fine antique pocket watch pin or brooch. In 10k (or higher) yellow gold.
Gold
Antique Diamond Pin Brooch
Located in Geneva, CH
Antique Diamond Pin Brooch in Platinum and Yellow Gold. Circa 1900.
Diamond, Gold, Platinum
Art Deco Platinum Diamond & Aquamarine Brooch
Located in Brisbane City, QLD
This stunning Art Deco brooch pin has been crafted from platinum and set with bright aquamarines and old cut diamonds.
Aquamarine, Diamond, Gold, Yellow Gold, Platinum
Antonio Pineda Mexican Modernist 970 Silver & Pearl Brooch or Pin
By Antoñio Pineda
Located in Philadelphia, PA
A fine Modernist silver brooch. In sterling 970 silver. By Antonio Pineda.
Pearl, Silver
Antique Edwardian Platinum Topped Gold & Button Pearl Bar Pin or Brooch
Located in Philadelphia, PA
A fine antique Edwardian bar pin or brooch. In platinum topped 14k karat yellow gold.
Pearl, Gold, Platinum
Art Nouveau Unger Brothers Sterling Silver Belt Buckle Brooch or Pin
By Unger Brothers
Located in Venice, CA
On the back is a clasp and pin making it a great brooch. It weighs 1.36 troy oz.
Sterling Silver
Duchess of Devonshire's Aquamarine Brooch, 180 Carats
Located in New Orleans, LA
This remarkable Belle Époque brooch possesses all three. Created circa 1905, the jewel was owned by the Duchess of Devonshire and centers a magnificent oval cut aquamarine weighing a...
Aquamarine, Diamond, Platinum
$15,000
Diamond Platinum Brooch Pin
Located in New York, NY
Brooch measures 1.75" x 2". Marked with serial scratch-on number.
Diamond, Platinum
Art Deco 14K White Gold & Diamond Round Filigree Brooch or Pin
Located in Philadelphia, PA
With a pin and safety clasp closure. Simply a wonderful Art Deco brooch!
Diamond, Gold, 14k Gold, White Gold
Antique Victorian 14k Yellow and Rose Gold & Diamond Scroll Shaped Brooch or Pin
Located in Philadelphia, PA
In the form of an unfurled scroll with a diamond in a starburst device to the center. With a 10 karat pin and C pin catch to the reverse. Simply a wonderful Victorian pin!
Diamond, 10k Gold, Rose Gold, 14k Gold, Yellow Gold
18 Karat Yellow Gold Floral Pin or Brooch Having Two Diamonds
Located in Stamford, CT
18Kt Yellow Gold Floral Pin / Brooch Having Two Diamonds. Total diamond weight .80.
Diamond, 18k Gold
Large Ed Wiener NYC Modernist 14K Gold & Diamond Brooch or Pin
By Ed Wiener
Located in Philadelphia, PA
A fine Modernist brooch. By Ed Wiener, the renowned New York City Mid-Century jewelry maker.
Diamond, 14k Gold
14 Karat Yellow and White Gold and Diamond Brooch or Pin
Located in Washington Depot, CT
Vintage 14 Karat Yellow and White Gold and Diamond Brooch /Pin. This lovely bar pin features one round brilliant cut diamond set in elegant yellow and white gold filigree.
Diamond, Yellow Gold, White Gold
18 Karat Gold Brooch Pin Circa 1960 Love Heart Hands Brooch Pin Love Heart Pin
Located in Brooklyn, NY
Vintage Diamond Brooch pin Two Hands Hold heart Design 18k Yellow Gold approx 5.1 grams Circa 1960 pre-owned - very Good condition Size: approx 1' inch Natural Diamonds approx 0.35...
Diamond, Gold, 18k Gold
110 Carat Aquamarine and Ruby Retro Brooch
Located in New York, NY
A beautiful large emerald cut aquamarine weighing 110.24 carats set with 27 round rubies in a festive gold plated retro brooch.
Aquamarine, Ruby, Gold Plate
$7,500
Diamond Gold Brooch Pin
Located in New York, NY
18k white and yellow gold brooch, with approx. 4 carats in diamonds. Brooch measures 82mm x 33mm.
Diamond, Gold
$3,000
Gold Leaf Brooch Pin
Located in New York, NY
Vintage 14k gold leaf brooch, measuring 55mm x 49mm. Weight - 15.6 grams.
Gold
1850s 14K Yellow Gold Hair Pin and Brooch with Aquamarine Citrine and Tourmaline
Located in Hicksville, NY
Item Details: Metal Type: 14K Yellow Gold [Hallmarked, and Tested] Weight: 11.8 grams Pin Measurements: Length: 1.50 inches Condition: Excellent
Gold, 14k Gold, Yellow Gold
Signed Edwardian 15K Yellow Gold & Sapphire Flower Brooch or Bar Pin
Located in Philadelphia, PA
A fine antique Edwardian brooch. In 15 karat yellow gold. In the form of a flower & vine set on a twig formed bar.
Sapphire, 15k Gold, Yellow Gold
Unavailable
Aquamarine Brooch
Located in New York City, NY
Stylish gem set brooch with a central aquamarine weighing approximately 50ct.
Aquamarine, Diamond
STERLE Aquamarine Brooch
By Pierre Sterlé
Located in New York City, NY
Sterle brooch featuring a central aquamarine weighing approximately 40ct.
Diamond, Aquamarine, Sapphire, 18k Gold
Unavailable
W 0.26 in D 0.3 in L 2.32 in
Antique 15ct Gold Aquamarine Solitaire Bar Brooch Pin c1890 625 Purity Heavy
Located in Camelford, GB
On offer is this stunning 15CT SOLID ROSE GOLD AQUAMARINE SOLITAIRE BAR BROOCH DETAILS Material: 15ct (625/000) Solid Heavy Yellow Gold Style: Victorian classic brooch / pin in the...
Aquamarine, Gold, 15k Gold, Yellow Gold
14 Karat Yellow Tourmaline Cartier Brooch or Pin
By Cartier
Located in Los Angeles, CA
This beauitifully detalied brooch feratures a 3.3cm x 3.95cm yellow tourmaline, and approximately 1.90 carats of old cut diamonds. 28.22gr stamp: cartier 14 Every Upper-Luxury piece ...
Diamond, Tourmaline, 14k Gold
Carved Aquamarine Diamond Gold Flower Pin
Located in New York, NY
Designed as a carved gold branch decorated with carved aquamarine flowers and brilliant-cut diamonds.
Aquamarine, Diamond, 18k Gold
Sapphire Diamond Aquamarine Ladies Estate Pin
Located in Miami, FL
Additionally, the pin features a captivating 4.50 carat aquamarine and a stunning 0.25 carat blue sapphire, both set in prongs, adding a touch of elegance to the piece.
Aquamarine, Diamond, Sapphire, Gold, 18k Gold, White Gold
Edwardian Antique Diamond Sapphire Pearl Brooch
By Hana Or
Located in Antwerp, BE
Edwardian Era Brooch Gold: 18 Carat Yellow Gold Weight: 18.25gr.
White Diamond, Natural Pearl, Blue Sapphire, 18k Gold
Unavailable
Aquamarine Sapphire Diamond Butterfly Brooch
By Shreve, Crump & Low
Located in Chestnut Hill, MA
18 karat white gold butterfly brooch consisting of square and rectangle cut aquamarines having a total weight of 7.18 carats, round sapphires having a total weight of 1.89 carats, an...
Aquamarine, Diamond, White Diamond, 18k Gold
Unavailable
Aquamarine ruby and diamond brooch
Located in Stratford upon Avon, GB
Aquamarine ruby and diamond brooch set in yellow gold
Aquamarine, Ruby, 18k Gold, White Gold, Yellow Gold
11 Carat White Diamonds Flower French Brooch or Pin
Located in Los Angeles, CA
This beautiful french brooch consists over 150 round white diamonds with approximatley 11 carats.
Diamond
18K yellow gold brooch with aquamarine
Located in Berlin, DE
The harmonious combination of precious metal and the luminous aquamarine makes this brooch a special piece with timeless elegance.
Aquamarine, 18k Gold, Yellow Gold
Art Deco Aquamarine Diamond Platinum Brooch
Located in Lisbon, PT
Circa 1935, a Vintage Platinum Triangle - Shaped Brooch / Pin, is Set with Aquamarines and Diamonds Round Cut ( H Color, VS1 - SI1 Clarity) Estimated total Aquamarine Weight is 10 ca...
Aquamarine, Diamond, Platinum
1960s Belperron Aquamarine Diamond Platinum Brooch
By Suzanne Belperron
Located in Milano, IT
A very fine platinum and diamond brooch centering a line of fine oval-cut aquamarine.
Aquamarine, Diamond, Platinum
Unavailable
Hair Pin/ Brooch
Located in New York , NY
19th Century Diamond Brooch that is convertible into a hair ornament set in silver on gold
Aquamarine Diamond Platinum Ballerina Dancer Brooch
Located in Milano, IT
A platinum diamond and aquamarine Ballerina brooch. Probably American, circa 1935.
Aquamarine, White Diamond, Platinum
28.00 Carat Aquamarine and Diamond Brooch
Located in Toorak, Victoria
A 1940's retro style 18 karat white gold brooch featuring 28.57ct aquamarine in a superb sunburst/ sun ray design.
Aquamarine, Diamond, 18k Gold
Tiffany & Co. Aquamarine and Diamond Pin in Platinum
By Tiffany & Co.
Located in Atlanta, GA
This fabulous pin is 1 1/2 inch wide and is in its original box.
Aquamarine, Diamond, Platinum
Naomi Sarna Aquamarine Diamond Gold Brooch
By Naomi Sarna
Located in New York, NY
Stunning, one of a kind brooch featuring a hand-carved natural, unheated 91.64 ct aquamarine.
Aquamarine, White Diamond, 18k Gold, White Gold
Amazing Aquamarine and diamond brooch/pendant and earrings
Located in New York, NY
An 18 kt and platinum brooch with aquamarine and diamonds of various cuts that can be worn also as a pendant that evokes hollywood glamor with matching 1" earings
Aquamarine
Sapphire Diamond and Aquamarine Art Deco Style Pin
Located in Miami, FL
Gorgeous estate diamond and gemstone pin. Vintage collectible art deco style pin.
Aquamarine, Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 18k G...
Antique brooch pin 14k
By Aloni jewelry
Located in Tel Aviv-Yafo, Tel Aviv District
This brooch made around 1960. Beautiful hand carved salmon coral and leaf jade.
Coral, Jade, 14k Gold
Unavailable
Toothy Brooch/Lapel Pin
By Mordekai
Located in Miami Beach, FL
Wear your mouth on your sleeve with the Mordekai Open Mouth Brooch. Mold "lifted” from our creative director’s face for the surreal collection: FACElift.
Unavailable
LookingLips Brooch/Lapel Pin
By Mordekai
Located in Miami Beach, FL
This completely handmade brooch joins the lips and eye jewels into one. This pain staking process creates an iconic, memorable surreal art treasure. ...
Unavailable
Fendi Poseidon Pin/Brooch
By Fendi
Located in Los Angeles, CA
Tres Chic...Fendi 1980's Poseidon Pin! Please note: All sales are final however; we will allow for an exchange up to 7 days after your purchase, so please be sure to ask all the n...
Star or Pinwheel Diamond, Platinum and 18 Karat Gold Brooch Pin
Located in New York, NY
This one of a kind Brooch designed as a pinwheel is set with numerous round diamonds weighing approximately 34 Carats.
Diamond, 18k Gold
Antique Victorian 9ct Yellow Gold Aquamarine Brooch
Located in Birmingham, GB
GEMMOLOGIST'S NOTES Fall in love with this gorgeous Victorian brooch... Of circular outline, hosting two raised curved panels, that are beautifully embellished with ornate engraving...
Aquamarine, 9k Gold, Yellow Gold
Charming Aquamarine and Diamond Floral Shaped Brooch
Located in Berlin, DE
Charming floral design, USA 1930's-1940's. With 5 tear-drops Aquamarine in prong setting weighing circa 7,5t and 33 brilliant-, chaton-, and old-mine cut diamonds weighing ca. 0,82ct.
Aquamarine, Diamond, Platinum
Art Deco Aquamarine Diamond Platinum Double Clip Brooch
Located in Milano, IT
An Art Deco platinum diamond and aquamarine double clip brooch. Probably american, 1930.
Aquamarine, Diamond, Platinum