An exquisite platinum and diamond brooch in the form of a turtle by Tiffany & Co. In the 1990’s, Tiffany created a small line of nature-themed jewels loosely based on antique pieces in its design archives. The turtle pin was one of the most luxurious pieces in the series. The domed back is pave-set with 90 2.5-point round brilliant cut diamonds and the legs and head are set with additional 28 1.5-point diamonds. The eyes are collet-set blue sapphires...

A phenomenal Edwardian platinum, diamond and amethyst bow brooch by Cartier. Four tromp l'oeil amethyst loops, each surrounded in old European cut diamonds, flank a center 1.08 carat, J/K, VS2 old European cut diamond.

Each of the double loops of the bow appears to be set with two amethysts, but there is in fact only one amethyst on each side. The gemstones are precision-cut to fit perfectly into the platinum setting and give the appearance of being four stones...

Authentic 1920-s period platinum and diamond ring. The openwork top is decorated by nine old-mine diamonds. The approximate weight of the center diamond is 0.25Ct, while the approximate total weight of all diamonds is 1.15Ct.The ring is in great condition.

This is an elegant platinum and diamond ring centered by an approximately 0.23 carat brilliant cut diamond that has I color and SI1 clarity. The diamond is set in a decorative buttercup style setting with six prongs. The ring dates back to the 1940s and would make a great friendship or engagement ring for a person who appreciates fine old jewelry.The ring is a size 5 1/2 and it can easily be sized.

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.

This is from a DC Metro Estate. Posted here is a much sought after Art Deco Platinum Diamond Ring with Onyx accent stones. The Diamond is one carat, european cut, S13 I1 Clarity, HI Color. Surrounding that Diamond are multiple faceted onyz stones. Ring size is 7 3/4 .... great ring

This is a Platinum Diamond Engagement Ring ING from a Maryland Estate. The Center European Cut Diamond IAMOND is .86 carats, GH Color VS Clarity. Fine Ring ca. 1925- 1945 Traditional designs.... Come in or call

This is a Great Art Deco era Piece from a Midwest, USA Estate. Beautifully Designed Classic Platinum Art Deco Bracelet with 4.5 Carats of Diamonds & Sapphire Accents. Try on this Bracelet in Kensington, Md. 301 942 0936

This is an Art Deco Platinum & Diamonds Ring from a Maryland Estate. Center DIAMOND is .75 Carat, Old European Cut, SI Clarity, GH Color. The Mounting is Platinum with 20 Additional Accenting Diamonds and 4 Sapphires. Rare Piece of Art RT Deco Platinum Diamond Jewelry

This Engagement Ring is from a Virginia USA Estate. Setting is Platinum with an .86 Carat Old European Cut Diamond, VS1 clarity, GH color. There are another 8 Full Cut Diamonds 4 on each side adding another 1/4 Carat Diamond weight or 1.30 Carats total diamond weight. Beautiful Platinum Diamond Ring

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...

This is a Platinum Diamond Engagement Ring with a 2.42 Carat center diamond. Diamond specifics continued: SI1 clarity, LM color, european cut. .... must see in peron to appreciate

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.

This is another Platinum Diamond Engagement Ring from a maryland estate. Size of the modern brilliant cut diamond is a half carat; VS1 ~ VS2 G color & manufactured circa 1990 - 2000. Try on this piece: Jantiques 10429 fawcett st. kensington, md 20895 ....a beauty

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...

Over a carat and a half of old cut diamonds surrounding a 2.20 carat natural blue sapphire. All set in a platinum on 14k gold setting. There is a wired frame of tiny seed pearls surrounding the whole thing. It is completely unmarked but all aspects have tested as such. The two largest diamonds measure approximately .40 cts each. On the GIA grading scale they grade at SI clarity and G color...

Sixteen large old mine cut diamonds set in a heavy platinum setting. The diamonds weigh approximately 3 carats total weight, and grade at VS-SI in clarity and H-J in color. The pin-back is 18k yellow gold and is stamped as such. The brooch measures 1.75" in length and approximately .75" wide. It is in excellent condition and weighs 7.7 grams.

Natural emerald oval cabochon weighing approximately 0.40 ct surrounded by beautiful platinum openwork and four diamonds weighing approximately 0.20 cttw. The ring is a size 6 and the overall weight is 3.1 grams. It is in good condition. It is unmarked but has tested as platinum. Circa 1910.