A star sapphire, sapphire, diamond, and platinum brooch, J.E. Caldwell & Co.

Star Sapphire, Diamond, Platinum Bracelet, Tiffany & Co. The bracelet features oval-shaped star sapphires weighing a total of approximately 12.50 carats, enhanced by full-cut diamonds weighing a t

Tiffany & Co. Platinum Pink Sapphire Diamond Star Pendant NecklaceThis necklace is 4.2 grams of 950 platinum has 0.85 Natural Pink Sapphire, 0.10 tcw Diamond VS1. The length is 16 inches

TIFFANY & CO.: A PLATINUM, STAR SAPPHIRE AND DIAMOND RING Centering an oval star sapphire cabochon weighing approximately 16.30 carats, accented by round and trapezoid-shaped diamonds weighing approxi

Circa 1915, platinum diamond & sapphire encrusted stickpin with J.E. Caldwell Box , 2.3 DWT 1 small sapphire missing

Diamond, Yellow Sapphire, Platinum, Gold Brooch, Schlumberger for Tiffany & Co. The brooch features a round-cut yellow sapphire weighing approximately 1.10 carats, enhanced by full-cut diamonds we

Early platinum 7 diamond, 8 rectangular caliper-cut sapphire Art-Deco filigree bar pin. (4.2 dwt.) Vintage J.E. Caldwell leather box included but not original to pin.

A diamond and platinum pendant brooch, Tiffany & Co."Enchant," 1996designed as a round brilliant-cut diamond dragonfly with sapphire eyes; estimated total diamond weight: 0.60 carat.3.6 dwt.; Length:

set with seven sapphires and 10 diamonds signed "Tiffany & Co." 1 3/4" long, 3.3 dwt gross

PLATINUM & 18K GOLD CEYLON STAR SAPPHIRE DIAMOND & RUBY BROOCH: An important 18K yellow gold Russian brooch set with a large star sapphire cabochon surrounded by diamonds and knife-set rubies in an en

TIFFANY & CO. Platinum, Diamond, and Sapphire Pendant/Broochthe circle brooch featuring a row of round brilliant-cut diamonds weighing approx. 3.10 tcw. and a row of channel-set baguette-cut sapphires

Vintage Diamond and Sapphire Bow Brooch, Tiffany & Co.the delicate platinum bow with milgrain detailing and set with full cut round diamonds weighing approximately 1.15 total carats (F-G color, VS cla

This impressive signed platinum ”Maltese Cross” brooch with 18kt yellow gold accents features an approx. 5.27 ct. medium slightly violetish blue sapphire cabochon bezel set into the center

This beautiful authentic floral ring is by Tiffany & Co. it is crafted from 18k yellow gold and features a lovely round cut blue sapphire gemstone in the center surrouned with 8 round cut sparkling di

22.40ctw Blue Star Sapphire, 0.49ctw VS2-SI1/G-H Diamond & Solid Platinum Cocktail Ring (Comes W/$19,000 Appraisal) - This stunning ring was finely crafted of solid platinum, and contains a 22.40ct (a

J.E. CALDWELL & CO., PLATINUM AND DIAMOND CONVERTIBLE DRESS CLIPS Consisting of two platinum clips containing straight baguette, round brilliant, and single cut diamonds weighing approximately 5.00 ca

Designed as a foliate wreath framing a translucent purplish blue star sapphire, 13.2 - 13.0 x 9.65 mm, 17.8 cts. by formula, with seven spherical (probably natural) pearls, 4.55 - 3.55 mm, set among O

An oval star sapphire cabochon, 23.20 cts. by formula, in strapped platinum and single cut diamond setting with baguette cut diamond shoulder, approx. .80 ct. TW. Ca. 1930. Stamped 10% Irid. Platinum.

Art Deco 25.75 Carats Star Sapphire & Diamond Platinum Dome Ring Size 4 This is a stunning Art Deco ring, it is crafted from platinum featuring a high dome shape star sapphire mounted on a round frame

Crafted in solid heavy Platinum, the center is adorned by a GIA certified Natural untreated Star Sapphire weighing approximately 2.56 carats. Accompanied by a GIA Report N#2215624863 & an official app

Platinum ring with oval 6.92ct star sapphire cabochon, and 0.29ctw in diamonds. Ring size - 6, ring top is 10.5mm. Marked: 6.92, Pt900, D029. Weight - 5.9 grams.

Star sapphire, diamond and platinum ring Centering one oval star sapphire weighing approximately 22.75 cts., accented by two tapered baguette cut diamonds weighing a total of approximately 0.48 ct., a

Oval star sapphire, 31 cts. by formula, with baguette and single cut diamond strapped shoulders, melee approx. .45 ct. TW, ca. 1935. Size 8 3/4. 8.5 dwt.

set with 5 star sapphire stones in grey-blue hues (center stone 10x9mm), 60 round diamonds approx. 2.75ctw, and 16 oval and round blue gemstone accents, ornate filigree design in white gold, stamped '

8.00ct Blue Star Sapphire, 1.30ctw VS2-SI1/G-H Diamond and Solid Platinum Ring - This beautiful ring was finely crafted of solid platinum and boasts a lovely 8.00ct (approximate) blue star sapphire th