1900s Antique 1.84 Carat Diamond and Platinum Brooch

An exceptional, fine and impressive antique 2.55 carat diamond, 2.60 carat sapphire brooch in platinum; part of our diamond and gemstone jewelry collections. This exceptional antique sapphire and diamond brooch has been crafted in platinum. The fine pierced decorated frame displays ten Old European round cut diamonds, claw and millegrain set, alternate with nine mixed round cut natural sapphires. The diamonds and sapphire are subtly graduating in size, terminating with the smallest diamonds at either end. The brooch secures to the reverse with an 18k yellow gold hinged pin and additional fine link safety chain. This fine antique brooch is supplied with an independent diamond grading report card. This impressive antique platinum brooch...

A magnificent and exceptional antique 3.48 carat diamond and 0.53 carat ruby, platinum and 18 karat yellow gold pendant / brooch; part of our diverse antique jewelry collections. Th...

An exceptional, fine and impressive antique French 2.06 carat diamond and platinum brooch; part of our antique jewelry and estate jewelry collections. This exceptional antique French brooch...

A stunning, fine and impressive Art Deco 2.16 carat diamond and platinum brooch; part of our diverse antique jewelry and estate jewelry collections. This stunning, fine and impressive diamond brooch has been crafted in platinum and in the Art Deco style. The pierced decorated, subtly convex rectangular design is ornamented with a central feature 0.41ct Old European round cut diamond, within a square shaped platinum setting. The feature diamond is flanked on either side by two perpendicular collet set eight cut diamonds. The symmetrical millegrain bordered setting is further ornamented with a total of fifty-eight impressive eight cut diamonds. The stunning antique brooch secures to the reverse with a hinged pin and push fit fastening. This 1920s platinum diamond brooch...

A stunning antique 1930s 2.85 carat diamond and platinum brooch in the form of a bow; part of our diverse antique jewelry and estate jewelry collections. This stunning, fine and impressive antique diamond brooch has been crafted in platinum. The brooch has been modelled in the form of a three-dimensional tied ribbon bow. The two platinum settings composing the bow loops are embellished with forty-two pavé set transitional modern brilliant round cut diamonds, in addition to a further six diamonds to the interior. The cut tails of the bow are ornamented with a further forty-three pavé set transitional modern brilliant round cut diamonds, paralleling the flowing nature of the ribbon. Both the bow loops and tails settings incorporate scalloped pierced decoration, enhancing the texture of the article. The bow's knot features six transitional modern brilliant round cut diamonds, completing the design. The brooch secures to the reverse with a hinged pin and clasp. This stunning antique bow brooch is hallmarked to the reverse with the mark for platinum (PLAT). This antique diamond bow brooch...

A fine opal and 0.22 carat diamond, platinum set, 15 karat yellow gold brooch; part of our antique jewelry and estate jewelry collections. The elongated shaped pierced decorated frame of this fine antique opal brooch...

This is an extraordinary Diamond Platinum Tiffany & Co. Edwardian - Art Deco Brooch Pin with approximately 2.5 Carats of magnificent Old Mine Cut Tiffany Diamonds set in Platinum in an open work scroll and leaf motif design of the highest quality. The antique Tiffany Diamonds are extraordinary. They are brilliantly white and clean. There are 30 Old Mine Cut Diamonds set throughout the brooch. In the center is a very rare pyramidal square fancy cut diamond of exceptional quality. The diamond is brilliantly white and very clean and the cut is absolutely magnificent. The diamonds are set in Platinum in a gorgeous open work design with knife edge designs leading to the two circular terminals. The terminals have elegant leaf and scroll form motifs set with diamonds in an arched design with milgrain beaded borders. The Tiffany Brooch is one of the most beautiful Edwardian jewels we have seen. The stunning design is timeless. The use of Platinum allowed the Tiffany jewelers...

Designed as a stylised flower cluster spray. Set with 2 old-mine-cut stones weighing 0,88ct and 0,16ct., clarity: SI2 and SI1, 1 drop-cut diamond of 0,65ct, clarity SI1. 149 diamonds...

Brooch in 18 carat rose gold, eagle head hallmark. This elegant marquise shaped brooch in rose gold features a delicate engraved design. It has a pin clasp with a safety hook. Leng...

Antique 2.5 Carat Diamond 18K Gold and Platinum Brooch circa 1930 Decorative, leaf-shaped curved diamond brooch, pierced and set with 66 diamonds totalling 2.5 ct, with the 5 larger...

Lovely Edwardian filigree cutout wide brooch designed in Platinum. The main diamond is Old European Cut and weighs approximately 0.57 carats. The rectangular brooch is covered in pav...

1860's Victorian diamond brooch pendant. One Old Mine cut center diamond set in a silver top and 14k yellow gold back with a cluster o...