All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1490115
Eternity band with a "twist". The band is set in half sapphire and half ruby with the ring switching from one to the other as you rotate it. The band is made of platinum and dates from about 1930. The sapphires are a lovely dark royal blue and the rubies a pinkish-red...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1485164
Black Dog Antiques
$1,950.00
Ca 1920 A stunning platinum and pearl ring with millegrain setting. There are twelve diamonds with a total carat weight of approximately 1.25 (ctw). The cream-colored cultured pearl measures 9mm. There is also a small amount of glue residue at the base of the pearl and very light wear on the nacre. Tests 950 platinum. Size 4.5 ~ Weight: 4 grams.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1980 item #1483285 (stock #TR1158)
A spectacular pair of hanging diamond earrings set in platinum with 18Kt yellow gold closure. Weather it is for a wedding or any other special occasion, these earrings will steal the show. ALL DIAMONDS ARE NATURAL, EARTH-MINED DIAMONDS! On each earring the top is a European back set with two bezel set diamonds, the triangular middle part is set with 7 diamonds and the cluster on the bottom is centered by an approximately 0.15Ct diamond which is surrounded by 12 diamonds...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1456235
A stunning early Art Deco platinum bracelet set with diamonds and emeralds. The bracelet comprises seven rectangular plaques, each centered with an old European cut diamond. The plaques are hand-pierced in an ornate foliate pattern accented with a total of 84 smaller old European and single cut diamonds and 70 calibre-cut natural emeralds. The primary diamonds (two .44ct; two .46ct; two .55ct; and one .61ct) are very well matched and are graded G/SI1...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1434866
A very fine Art Nouveau pendant formed from an exceptionally large natural freshwater pearl mounted in platinum and gold and set with diamonds. The floral platinum mounting features a .15 carat old European diamond and nine single-cut diamonds. The bail is shaped as a clover and is set with three additional diamonds. The pearl has fine luster with rose and green orient. Tested and guaranteed platinum and 14K gold. The contemporary chain is 14K white gold.
  • Origin: America, ca...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #1407334
A very fine pair of platinum, diamond and sapphire earrings in a classic line pattern. The brilliant round-cut diamonds graduate from .10 ct at the top to .20 ct at the bottom. The diamonds are finely matched at H color, SI1 to SI2 clarity, with good to very good cut. The modified-brilliant round-cut sapphires have a beautiful limpid medium violet-blue color, excellent brilliance and eye-clean clarity. Each stone is set in a fully articulated mounting with a pierced gallery...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1970 item #1397537 (stock #TR1043)
An elegantly tailored platinum and diamond engagement ring and matching band set from the 1960-s. The engagement ring is centered by a guaranteed 1.01Ct brilliant cut diamond, and the center stone is flanked on either side by a tapered diamond baguette. The center diamond is not certified, but graded by our in-house gemologist, and has J color and VS1 clarity. The approximate total weight of the three diamonds in the engagement ring is 1.20Ct...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1970 item #1385407 (stock #TR1030)
This reasonably priced elegant estate platinum and diamond engagement ring from the 1960-s is centered by a 1.65Ct marquise diamond. The non certified diamond has H color and I1 clarity. The center stone is flanked on either side by a tapered diamond baguette. The approximate total weight of the baguettes is 0.20Ct, which would bring the total weight of all diamonds to 1.86Ct. The ring is a size 4 ¾ and can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1380655 (stock #TR1001)
A masterfully handcrafted antique diamond and platinum engagement ring is centered by an approximately 1.20Ct old-mine diamond. The center stone that is not certified has K-L color and VS2 clarity. The intricately detailed openwork setting is further enhanced by fourteen smaller single-cut diamonds. The approximate total weight of all diamonds is 1.45Ct. The ring is a size 7 ¼ and can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1380284 (stock #TR1000)
An elegant yesteryear’s platinum and diamond bow like pendant is set with nineteen round diamonds. Thirteen of the diamonds are set in the body of the pendant, while three diamonds are hung from the bottom. The approximate total weight of all diamonds is 0.75Ct. The 1 ¾” long and 9/16” wide pendant is accompanied by an 18” long platinum chain.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1379824 (stock #TR990)
Anyone who appreciates antique jewelry would love this fabulous platinum and diamond ring from the 1920-s. The non certified center stone is an approximately 1.30Ct brilliant cut diamond that has H color and I1 clarity. The masterfully crafted delicate openwork platinum setting is decorated by 18 single cut diamonds. The approximate total weight of all diamonds is 1.65 Ct. The ring is a size 8 and can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1950 item #1379031 (stock #TR973)
A well proportioned marquise diamond centers this platinum engagement ring and the center stone is flanked by a leaf design which is decorated by three single cut diamonds on either side. The center diamond that has I color and VS1 clarity weighs 0.46Ct and the approximate total weight of all diamonds is 0.60Ct. The ring is a size 7 ½ and can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1374827 (stock #TR908)
This stylish handmade Art Deco platinum cocktail ring is set with two marquise diamonds and forty-two single cut diamonds. The approximate weight of the two marquise diamonds is 0.40Ct and the approximate total weight of all diamonds is 0.90Ct. The top of the ring measures 13/16” by ½”. The ring is a size 3 ¾, and it can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #1369920 (stock #TR890)
This vintage 1950-s platinum and diamond eternity band is set with 32 diamonds. There are 4 full-cut and 28 single-cut diamonds decorating the scroll and priced design 7 millimeter wide band. The approximate total weight of all diamonds is 0.70 Ct. The ring is a size 5 ½ and it CAN NOT be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1350968
An impressive Edwardian pendant featuring a large cabochon amethyst and diamonds set in platinum. The amethyst is pierced and set with a .25ct H/SI1 diamond and surrounded by a halo of small old European cut and rose cut diamonds. The bail is similarly set with rose cut diamonds. The pendant has a very dramatic appeal, yet the openness of the setting keeps it from being overpowering. Tested and guaranteed platinum (chain is silver).

Origin: America, ca. 1915...

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1338395
A stunning Art Deco platinum ring featuring an antique cushion cut 9.03-carat Ceylon sapphire flanked on either side by three baguette diamonds arranged in a stepped pattern. The sapphire is graded on the GIA scale as vB5/4 (medium tone, moderate-strong saturation, violetish blue color), with eye-clean clarity and excellent cut. The stone's internal characteristics suggest Ceylon as the most likely origin. The overall look is a lovely cornflower blue with a tinge of violet mixed in...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1334054
An exquisite Art Deco platinum filigree ring set with a 1.14 carat old European cut diamond surrounded by caliber-cut onyx and coral in a sort of Moorish design. The diamond is graded as H color and SI1 clarity. All the stones are set in millgrained bezel settings...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1331699 (stock #TR777)
A beautifully decorated platinum and diamond filigree ring from the 1920’s centered by two old-mine diamonds and further enhanced by another 28 various size old-mine diamonds. The approximate total weight of all 30 diamonds is 1.00Ct.The ring is size 5 3/4, but it can easily be sized if needed.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1970 item #1317940 (stock #TR776)
This very elegant platinum ring is set with two 5 mm round natural emeralds, ten tapered diamond baguettes in two quarter – circles, and two smaller round diamonds. The approximate total weight of the emeralds is 1.50Ct and the diamond weight totals approximately 0.50 Ct.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1307014
An exquisite Art Deco platinum pendant in the form of a rose set with old mine cut, old European cut, single cut and pear cut diamonds. The design is delicately worked in a sort of stencil effect, the negative spaces between diamond-set areas appearing as the veins of leaves or the deeper recesses of the rose blossom. The center of the rose is set with a .96-ct pear shaped diamond, H/VVS2. The smaller diamonds are well-matched in the H range SI clarity. A diamond-set leaf-shaped bail complet...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1298426
A lovely Art Deco white gold and platinum filigree bracelet featuring three diamond-set frosted and engraved crystal plaques alternating with bezel-set pale blue spinels. The use of pale blue spinels the color of aquamarines is a very unusual treatment in a bracelet of this type, and the overall effect is very pretty. All the platinum surfaces are engraved in a delicate foliate motif. The clasp is stamped for 14K and platinum and has an unidentified maker’s mark.

Origin: America, ca. 1920...

All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1286375 (stock #J1537)
Bedell & Co.
$3,000.00
Circa 1935, this late Art Deco watch is delicately crafted of platinum and diamonds. The band is made by Kreisler out of stainless steel and is marked as such on the clasp. The watch face measures approximately 1 3/8" long and 3/8" wide. It has approximately .50 carats total weight of baguette and rose cut diamonds on the front. The back of the watch is completely unmarked but has tested as platinum. The watch winds and keeps accurate time, but we do not warranty old watches. The band has two sa...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1980 item #1279215
An iconic "Lentils" necklace crafted in hematite by Angela Cummings for Tiffany & Co. Cummings began designing with lentil-shaped beads in late 1980 and it became one of her hallmarks. This hematite necklace is punctuated with a single platinum lentil pave-set with round brilliant diamonds (G/VS1). The brilliance of the diamonds is particularly nice against the dark color of the hematite. The clasp is signed "Cummings", "T&Co." and "IridPlat".

Origin: America, ca. 1985. Condition: excelle...

All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1276800 (stock #TR762)
An exquisitely made antique platinum diamond and ruby ring that is centered by an 8 X 6 mm oval cabochon natural ruby which has the approximate weight of 1.0 Ct. The center stone is surrounded by twelve old-mine diamonds with the approximate total weight of 0.60 Ct. The top of the ring measures 13 X 11 mm.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1270213 (stock #7081)
An Art Deco platinum diamond solitaire ring circa 1920s 1930. This elegant diamond is a European brilliant cut, 0.90 carat, VVS-2 clarity, L-M colour. The ring is a size 7-1/2. It is stamped 10% IRID. PLAT. to indicate that 10 per cent of the metal is iridium. This is a great engagement ring choice for those who like clean classic design, and it goes well with any bridal style. It has larger claws in each corner to give the ring a square appearance, and there are smaller claws on the corners as ...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1262211 (stock #J1864)
Bedell & Co.
$21,000.00
Beautiful Art Deco three-stone design in Platinum totaling 2.93 carats. The Old European Cut center diamond measures approximately 1.20 carats and grades on the GIA scale as L color and VS2 clarity. The Old European Cut diamonds on either side measure approximately .80 carats and .93 carats and grade as VVS2-VS1 Clarity and K-M color. The ring is in excellent condition and is currently a size 6.75.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1980 item #1260161 (stock #CCGconTopaz)
June Hastings
$3,250.00
Spectacular platinum dinner ring with prong set 23.78 ct brilliant cut oval blue natural topaz dinner ring with a split shank. The topaz measures 20 x 15 x 11 mm and is surround by 40 prong set brilliant cut diamonds with an approximate total weight of 1.68 ct. The ring's focal design is 29 mm long and 25 mm wide. Condition is excellent, like new. Appraisal attached.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1235052
A large Edwardian puffed heart pendant/brooch worked in finely pierced platinum and set with nearly six carats of old European cut diamonds. Most Edwardian hearts are somewhat smaller than this generously-sized example. The design depicts a central blossom surrounded by scrolls around the edge of the heart. The center diamond is .60 carat, L color and SI2 clarity. The remaining 36 diamonds, totaling approximately 5.27 carats, are I/J color and SI1-I1 clarity. The back of the heart has a rem...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1231213 (stock #TR738)
Your dream could be fulfilled with this glamorous 1920-s treasure. The approximately 1.70 Ct old-mine diamond with K color and VS2 clarity is set in a beautifully engraved openwork platinum setting. The diamond was graded by our in-house gemologist, and it is not certified by a gem lab. It is rare indeed, to find a period piece like this in such perfect condition. The ring is a size 6 ½ and it can easily be sized.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1212584
Kensington House Antiques
SODL, PLEASE VISIT US AGAIN
A stunning French Belle Epoque platinum negligee necklace set with old European and single-cut diamond and calibre cut blue sapphires. The fancy platinum chain, interrupted at regular intervals with natural seed pearls, joins to a gracefully arched diamond-set bar suspending old European cut diamonds leading an asymmetrical pair of semicircular plaques, each finished with a tassel of natural seed pearls. The term “negligee”, technically meaning “careless”, refers to the seemingly carel...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1910 item #1210882
A fine and very lovely Art Nouveau pendant or brooch worked in platinum and 18K yellow gold, every visible surface is set with old mine cut and old European cut diamonds of various sizes. The design depicts are central flower surrounded by foliage twisted into whiplash curves and sprinkled with flower buds. The construction is very solid and quite heavy, but the openwork maintains a feeling of lightness. The back retains the original pinstem and safety clasp as well as a folding bale so the j...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #1208365 (stock #J1723)
Bedell & Co.
$6,500.00
Beautiful 5.2 carat Rubellite Tourmaline set in platinum with six diamonds. Simple and elegant, the ring is approximately a size 7. The diamonds on the sides are well cut and matched and weigh approximately 0.10 cttw. It is stamped on the inside "10% IRID PLAT". The overall weight is 4 grams.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1202854
A lovely French garland-style pendant/brooch in platinum and set with diamonds. The garland style, popularized by Cartier, heavily borrowed Louis XVI motifs such as bows, ribbons and laurel wreaths—all seen in this example. When worked in platinum, the designs take on a delicate appearance and allow the diamonds to shine. The center old European cut diamond, graded as J/SI1, weighs .48 carat. The diamond hanging from an articulated millegrained knife-edge mounting has the same grading and ...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1950 item #1171944 (stock #TR713)
A circa 1940’s estate platinum and diamond eternity band that is 7½ mm wide will fit a size 5½ finger for that Cinderella in your life. The band has an open-work design and is decorated by 30 full cut diamonds. The approximate total weight of all diamonds is 0.75Ct.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1950 item #1094785
A stunning late Art Deco pair of diamond and palladium dress clips by Tiffany & Co. The clips are fully convertible with a duette mechanism into a single round brooch of substantial presence. Each clip features a pair of stylized flowers with curving foliage and are faintly in the cornucopia shape popular in Deco and Retro jewels. The clips are extremely versatile--they can be worn singly, as a pair or joined as the larger brooch. The diamonds are G color and VVS2-VS1 clarity. The back of e...
All Items : Estate Jewelry : Platinum : Vintage : Pre 1950 item #1078711 (stock #TR674)
A classic 1940s engagement ring, this beauty features an approximately 0.60 Ct brilliant cut diamond center stone set in platinum. The sparkler is flanked on either side by a smaller brilliant cut diamond that matches the center stone. The center diamond has H color and VS2 clarity and the approximate total weight of all diamonds is 0.72 Ct.