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New Tacori Emerald Cut 3 Stone Engagement Ring 18k Gold Platinum Semi Mount 2199
By Tacori
Located in McLeansville, NC
This beautiful NEW Tacori engagement ring is a semi mount 3-stone design currently set with a 1
Category
2010s Used Platinum Semi Mount
Materials
Diamond, 18k Gold, Platinum
Amavida Platinum Engagement Mounting With Semi Halo
By Gabriel & Co.
Located in Stamford, CT
This platinum engagement ring is rich in design reminiscent of early 20th century English jewelry
Category
2010s Used Platinum Semi Mount
Materials
Diamond, Platinum
Ladies Platinum Princess Diamond Semi Mount Engagement Ring
Located in Houston, TX
Ladies platinum diamond engagement ring with a half round shank. Engraved with "PLAT". The semi mount can
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Ladies Platinum Diamond Oval Semi Mount Engagement Ring
Located in Houston, TX
Ladies 950 platinum diamond engagement semi-mount ring with a half round shank. Engraved with "PLAT
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Ladies Platinum Halo Accented Diamond Round Semi Mount Engagement Ring
Located in Houston, TX
Ladies platinum diamond halo accented semi-mount engagement ring with a half round shank. The metal was
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Ladies Platinum Oval Accented Emerald Cut Diamond Semi Mount Engagement Ring
Located in Houston, TX
polished 950 platinum, diamond engagement, semi-mount, accented ring with a tapered, comfort-fit shank. The
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Ladies Platinum Marquee Hidden Halo Accented Diamond Semi Mount Engagement Ring
Located in Houston, TX
engagement hidden halo semi-mount ring with a half round shank. Engraved with "PLAT".
The semi mount can
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Scott Kay Diamond Engagement Ring Semi Mount Tapered Baguettes 0.28tcw Platinum
By Scott Kay
Located in San Diego, CA
Brand: Scott Kay
Style: Solitaire with Baguettes Semi Mount
Metal: Platinum
Size: 6.75 - sizable
Category
2010s American Used Platinum Semi Mount
Materials
Diamond, Platinum
Tacori Ladies Platinum Squared Three Stone Diamond Semi Mount Engagement Ring
By Tacori
Located in Houston, TX
Ladies platinum diamond semi-mount engagement three-stone ring with a half round shank. Engraved with
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, Platinum
Tacori Sculpted Crescent Semi-Mount Engagement Ring Platinum Rnd CZ fits 6.5mm
By Tacori
Located in Greensboro, NC
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Cut: Round Brilliant
Color: Clear
Diameter: 6.5mm
Style: Semi-Mount Solitaire
Features: Milgrain
Category
21st Century and Contemporary Used Platinum Semi Mount
Materials
Platinum
Ladies 18K White Gold Platinum Princess Cut Diamond Semi Mount Engagement Ring
Located in Houston, TX
Weight: 6.32 grams
Ladies 18K white gold and platinum diamond accented engagement semi-mount ring with a
Category
21st Century and Contemporary Unknown Used Platinum Semi Mount
Materials
Diamond, White Gold, Platinum
New Semi-Mount Engagement Ring, 18k Gold & Platinum Fits w/Dias .33ctw
Located in Greensboro, NC
This ring is a size 6 1/2 - 6 3/4.
Metal Content: Guaranteed 18k Gold & Platinum as stamped
Stone
Category
Late 20th Century Unknown Used Platinum Semi Mount
Materials
18k Gold, Platinum
New Tacori 3 Stone Engagement Ring Platinum Size 6.5 Semi Mount Heart 10936
By Tacori
Located in McLeansville, NC
This beautiful NEW Tacori engagement ring has a semi mount 3-stone design. The center is set with a
Category
2010s Used Platinum Semi Mount
Materials
Diamond, Platinum
1.20ct Natural Semi Black Opal Diamond Ring Estate Platinum Sz 6 Fine Jewelry
Located in Torrance, CA
Stylish natural semi-black opal & diamond ring (circa 2000s) crafted in platinum.
Natural opal
Category
21st Century and Contemporary American Contemporary Used Platinum Semi Mount
Materials
Diamond, White Diamond, Opal, Black Opal, Platinum
1.01 Carat E VS2 Diamond Platinum Solitare Engagement Ring
Located in London, GB
in colour and VS2 in clarity, that is beautifully mounted in a high semi rub-over setting. The
Category
2010s English Modern Used Platinum Semi Mount
Materials
Diamond, Platinum
Tiffany & Co Engagement Wedding Anniversary Band Ring Diamond .35ct Platinum
By Tiffany & Co.
Located in Dearborn, MI
. Wedding Band Made to Fit the Crossover Engagement Ring
Matching Semi Mount Listed Separately
Best
Category
2010s Used Platinum Semi Mount
Materials
Diamond, Platinum
Peter Suchy 29.40 Carat Aquamarine Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
mounted in a platinum setting. The pendant hangs from a platinum 18 inch chain. Designed and crafted in
Category
21st Century and Contemporary Used Platinum Semi Mount
Materials
Aquamarine, Diamond, Platinum
Platinum & 18K Yellow Gold Diamond Engagement Ring 0.40 ctw
Located in Houston, TX
professional jewelers.
The semi-mount can accommodate a round or cushion cut stone with a diameter between
Category
21st Century and Contemporary Used Platinum Semi Mount
Materials
Diamond, 18k Gold, Yellow Gold, Platinum
Peter Suchy GIA Transitional Cut Diamond Sapphire Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
center stone mounted in a Platinum setting and accented by 2 pear shape side sapphires. The three main
Category
21st Century and Contemporary Used Platinum Semi Mount
Materials
Diamond, Sapphire, Platinum
1.50 Carat Old European Diamond Platinum Art Deco Three-Stone Engagement Ring
Located in Stamford, CT
1930's Art Deco three-stone diamond ring. 1.00ct Old European cut diamond center stone. Mounted in
Category
Early 20th Century Used Platinum Semi Mount
Materials
Diamond, Platinum
Art Deco 1925 Graduated Burmese Jadeite Jade Necklace Sautoir Platinum Diamonds
Located in Miami, FL
graduation in color.
Birthstone: August.
Diamonds: The platinum security lock is mounted with 3 old
Category
1920s American Art Deco Used Platinum Semi Mount
Materials
Diamond, Jade, Platinum
Free Shipping
L 37.01 in
Platinum Fine Antique Oval GIA Reddish Orange Coral & Mine Cut Diamond Ring
Located in Montclair, NJ
stone. The coral is then uniquely pierced in its center with a platinum basket mounted inside of it. A
Category
2010s American Art Deco Used Platinum Semi Mount
Materials
Coral, Platinum
Multi-Gem Cabochon "Jubilee" Necklace 1, 000+ Carats 18K Gold and Platinum
Located in New York, NY
weighing approximately 10 carats set in a flexible and comfortable mounting of 18K gold and platinum.
Category
1970s Used Platinum Semi Mount
Materials
Amethyst, Aquamarine, Citrine, Garnet, Moonstone, Pink Sapphire, Tourmal...
Free Shipping
H 8 in W 6.25 in
GIA Certified 4.09-Carat White Opal and Diamond Halo in Platinum and Gold Ring
Located in Miami, FL
yellow gold ring shank that integrates with a platinum halo prong mounting. A truly drop-dead gorgeous
Category
2010s Art Deco Used Platinum Semi Mount
Materials
Diamond, Opal, Gold, Platinum
GIA Certified 4.09-carat White Opal and Diamond Halo in Platinum and Gold Ring
Located in Miami, FL
yellow gold ring shank that integrates with a platinum halo prong mounting. A truly drop-dead gorgeous
Category
2010s Art Deco Used Platinum Semi Mount
Materials
Diamond, Opal, Gold, Platinum
French 1920 Art Deco Geometric Brooch in Platinum with 10.70ctw in Diamonds
Located in Miami, FL
diamonds, 3.84 carats, H/I color, VS/SI clarity.
Pearl: Mount in the center, with 1 natural saltwater semi
Category
1920s French Art Deco Used Platinum Semi Mount
Materials
Diamond, White Diamond, Pearl, Natural Pearl, Platinum
Free Shipping
W 0.91 in D 0.55 in L 2.48 in
GIA Ruby Diamond Platinum 18K Antique Certified No Heat Huge Pendant 4.63 Carats
Located in Sylvania, GA
Carat Pendant and Box! Transparent Natural Burma Rubies Set in Solid Heavy Platinum & 18K Yellow Gold
Category
Late 18th Century Late Victorian Used Platinum Semi Mount
Materials
Diamond, Ruby, 18k Gold, Platinum
Free Shipping
W 0.99 in L 1.72 in
Art Deco 1915 Convertible Necklace 18kt Gold and Platinum with 2.43 Cts Diamonds
Located in Miami, FL
/SI.
Mount in the center with one semi round natural white pearl of 5.2 mm.
The gemstones settings
Category
1910s American Art Deco Used Platinum Semi Mount
Materials
Diamond, Pearl, Gold, 18k Gold, Platinum
Free Shipping
W 1.57 in L 1.14 in
Art Deco 1930 Cocktail Bombe Ring In Platinum With 3.19 Ctw Diamonds And Emerald
Located in Miami, FL
An art deco platinum cocktail ring.
Beautiful antique cocktail ring, created in America during the
Category
1930s American Art Deco Used Platinum Semi Mount
Materials
Emerald, White Diamond, Diamond, Platinum
Three-Stone Engagement Ring Tri-Color Platinum 18 Karat Yellow and 18 Karat Gold
By Rock N Gold Creations
Located in Rancho Santa Fe, CA
. Brand new semi-mounting engagement ring by Rock N Gold Creations. The semi-mount ring is comprised of
Category
2010s American Contemporary Used Platinum Semi Mount
Materials
Rose Gold, Yellow Gold, Platinum, 18k Gold
Wedderien 1928 Art Deco Carved Jade Clip Platinum 12.51 Cts Diamonds & Sapphires
Located in Miami, FL
.
Sapphire: Mount in the center in four prongs, with a semi oval double cabochon cut (10 x 11 x 5.5 mm) of a
Category
1920s American Art Deco Used Platinum Semi Mount
Materials
Diamond, White Diamond, Jade, Sapphire, Blue Sapphire, Star Sapphire, Pl...
Free Shipping
W 0.39 in L 1.34 in
GIA-Certified Type A Jadeite Jade Crane & Deer Pendant with Platinum Diamond Top
By Eytan Brandes
Located in Sherman Oaks, CA
Brandes cleverly converted an old (circa 1930) platinum and diamond wedding bale to create the pendant's
Category
2010s North American Contemporary Used Platinum Semi Mount
Materials
Jade, Diamond, White Diamond, Gold, 14k Gold, White Gold, Platinum
Free Shipping
H 2.17 in W 0.83 in D 0.24 in L 16.15 in
4.5 Carat Diamond "Mad Heart" Pendant in Platinum with Silver Akoya Pearls
Located in Sherman Oaks, CA
milady accidentally puncturing herself with those pointy platinum stems!
We purchased this brooch many
Category
Late 20th Century North American Contemporary Used Platinum Semi Mount
Materials
Cultured Pearl, Pearl, White Diamond, Diamond, Platinum, White Gold, 14k...
Free Shipping
H 2.29 in W 1.74 in L 15.99 in
Carved Black Chalcedony Sculpture & Diamond 18kt Pendant, Enhancer, & Brooch
By Robert Guyon
Located in Logan, UT
nestled perfectly into the carving.
The hand-fabricated 18kt and platinum mounting allows this piece to
Category
21st Century and Contemporary American Contemporary Used Platinum Semi Mount
Materials
Chalcedony, Diamond, 18k Gold, Platinum
Art Deco 3.30 Carat Diamond and Onyx Ring, circa 1920s
Located in London, GB
beautifully. The onyx is also rub over set within a platinum mount. The shank is also made of platinum. The
Category
1920s Unknown Art Deco Used Platinum Semi Mount
Materials
Diamond, Onyx, Platinum
GIA Certified 2.5 Carat Oval Cut Tsavorite and Diamond Overpass Crossover Ring
Located in Miami, FL
GIA Certified Green 2.50 Carat Tzavorite and Diamond Overpass 18K Gold and Platinum Ring. Signed by
Category
Late 20th Century North American Retro Used Platinum Semi Mount
Materials
Diamond, Tsavorite, 18k Gold, Yellow Gold, Platinum
Verger Freres 1901 Spaulding & Co Edwardian Watch-Pendant Guilloche 18Kt Diamond
Located in Miami, FL
oval painting is accented around by a platinum frame, which is mount with 36 Old French rose cut
Category
Early 1900s French Edwardian Used Platinum Semi Mount
Materials
Diamond, 18k Gold, Yellow Gold, Platinum
Free Shipping
W 1.02 in D 0.28 in L 1.42 in
French 1900 Edwardian Natural Pearls Necklace In 18Kt Gold With Diamonds & Ruby
Located in Miami, FL
and topped with a layer of platinum for the setting of the diamonds. The settings are finished with
Category
Early 1900s French Edwardian Used Platinum Semi Mount
Materials
White Diamond, Pearl, Natural Pearl, Ruby, Diamond, Gold, 18k Gold, Yell...
Free Shipping
W 0.35 in L 16 in
Edwardian 1910 Natural Pearls Necklace In 18Kt Gold With Diamonds And Sapphires
Located in Miami, FL
18 karats and topped with platinum for the gemstones settings. The settings are finished with
Category
1910s English Edwardian Used Platinum Semi Mount
Materials
Diamond, White Diamond, Pearl, Natural Pearl, Sapphire, Blue Sapphire, G...
GIA Certified 3.46 Carat Fancy Yellow and Diamond Ring
Located in Delray Beach, FL
18K yellow gold, it features an impressive double halo semi mount with (26) twenty-six white round
Category
2010s Unknown Modern Used Platinum Semi Mount
Materials
Diamond, Yellow Diamond, 18k Gold, Yellow Gold
Art Deco 3.82ct Sapphire and Diamond Cluster Ring, circa 1930s
Located in London, GB
is Cabochon cut and mounted in platinum. Decorative metal work features at the top and bottom of the
Category
1920s Unknown Art Deco Used Platinum Semi Mount
Materials
Sapphire, Diamond, 18k Gold
David Webb 18K Yellow Gold Double Head Pantheres in Black Enamel Bracelet
By David Webb
Located in New York, NY
and spots, mounted in 18k gold and platinum, wrist size 6.25 inches.
A skilled jeweler as well as an
Category
20th Century American Modern Used Platinum Semi Mount
Materials
Diamond, 18k Gold, Yellow Gold, Enamel
Set of 3 vase lamp holder produced by Ceramiche Bitossi Montelupo, 70s.
By Bitossi
Located in Arezzo, Italy
moulding: method used for large objects. We use plaster moulds (male and female) mounted on a manual or
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
H 11.82 in W 9.06 in D 7.09 in
Set of 3 small Vases by Aldo Londi for Bitossi Montelupo pottery, 70s.
By Aldo Londi
Located in Arezzo, Italy
impression.
Modine moulding: method used for large objects. We use plaster moulds (male and female) mounted
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Set of 2 ceramic planter produced by Ceramiche Bitossi Montelupo, 70s.
By Bitossi
Located in Arezzo, Italy
moulding: method used for large objects. We use plaster moulds (male and female) mounted on a manual or
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
H 8.27 in W 9.85 in D 9.85 in
Set of 3 ceramics planter produced by Ceramiche Bitossi Montelupo, 70s.
By Bitossi
Located in Arezzo, Italy
large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press, where
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
H 14.57 in W 4.53 in D 4.53 in
Vase of the Rimini series by Aldo Londi for Ceramiche Bitossi , 1970
By Aldo Londi
Located in Arezzo, Italy
used for large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Lamp holder vase by Aldo Londi for Ceramiche Bitossi, 1970 Signed.
By Aldo Londi
Located in Arezzo, Italy
use plaster moulds (male and female) mounted on a manual or mechanical press, where the clay slab is
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Vase lamp holder produced by Ceramiche Bitossi Montelupo, 70s.
By Bitossi
Located in Arezzo, Italy
used for large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Vase of the Rimini series by Aldo Londi for Bitossi Ceramics , 1970
By Aldo Londi
Located in Arezzo, Italy
used for large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Large vase of the Rimini series by Aldo Londi for Bitossi Ceramics , 1970
By Aldo Londi
Located in Arezzo, Italy
used for large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Lamp holder vase by Aldo Londi for Ceramiche Bitossi, 1970 Signed.
By Aldo Londi
Located in Arezzo, Italy
large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press, where
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Small Vase by Aldo Londi for Bitossi Montelupo pottery, 70s.
By Aldo Londi
Located in Arezzo, Italy
impression.
Modine moulding: method used for large objects. We use plaster moulds (male and female) mounted
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Vase of the Rimini series by Aldo Londi for Bitossi Montelupo pottery, 70s.
By Aldo Londi
Located in Arezzo, Italy
used for large objects. We use plaster moulds (male and female) mounted on a manual or mechanical press
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Lamp holder vase by Aldo Londi for Ceramiche Bitossi, 1970 Signed.
By Aldo Londi
Located in Arezzo, Italy
use plaster moulds (male and female) mounted on a manual or mechanical press, where the clay slab is
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Lamp holder vase by Aldo Londi for Ceramiche Bitossi, 1970 Signed.
By Aldo Londi
Located in Arezzo, Italy
use plaster moulds (male and female) mounted on a manual or mechanical press, where the clay slab is
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Lamp holder vase by Aldo Londi for Ceramiche Bitossi, 1970 Signed.
By Aldo Londi
Located in Arezzo, Italy
use plaster moulds (male and female) mounted on a manual or mechanical press, where the clay slab is
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Ceramic planter by Rosenthal Netter for Ceramiche Bitossi Montelupo, 70s.
By Rosenthal Netter
Located in Arezzo, Italy
impression.
Modine moulding: method used for large objects. We use plaster moulds (male and female) mounted
Category
1970s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Siviglia Ceramic planter by Aldo Londi for Ceramiche Bitossi Montelupo, 60s.
By Aldo Londi
Located in Arezzo, Italy
.
Modine moulding: method used for large objects. We use plaster moulds (male and female) mounted on a
Category
1960s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
Fritte series lamp holder by Aldo Londi for Bitossi, 1964 Limited series N.31/35
By Aldo Londi
Located in Arezzo, Italy
use plaster moulds (male and female) mounted on a manual or mechanical press, where the clay slab is
Category
1960s Italian Mid-Century Modern Used Platinum Semi Mount
Materials
Ceramic, Pottery
H 13.78 in W 9.85 in D 3.94 in
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Used Platinum Semi Mount For Sale on 1stDibs
You are likely to find exactly the used platinum semi mount 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 Platinum, 18k Gold and Gold — can elevate any look. Find an antique version now, or shop for 16 vintage or 17 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a used platinum semi mount may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Creating a used platinum semi mount has been a part of the legacy of many jewelers, but those produced by Tacori, Gregory Mikaelian & Sons, Inc. and Michael Barin are consistently popular. A used platinum semi mount can be a stylish choice for most occasions, but Diamond rings, from our inventory of 27, can add a particularly distinctive touch to your look, day or night. See these pages for a round cut iteration of this accessory, while there are also old mine cut cut and emerald cut cut versions available here, too. Finding a used platinum semi mount for sale for women should be easy, but there are 13 pieces available to browse for unisex as well as men, too.
How Much is a Used Platinum Semi Mount?
The price for a used platinum semi mount starts at $650 and tops out at $11,660 with these rings, on average, selling for $1,700.
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