Retro Opal Ring - Vintage 10k Yellow Gold Natural Rectangular Cabochon Gemstone - Circa 1940s Size 12 Fine Unisex October Birthstone Jewelry

Pretty vintage circa 1940s era 10k yellow gold natural opal ring! This unisex signet style ring features a rectangular cabochon cut natural white opal gemstone that is securely bezel set. The shoulders have beautiful late Deco flower and geometric details. A lovely solitaire signet ring from circa 1940's, featuring an October birthstone, from the renowned jewelry designer Ostby & Barton!

ERA - Circa 1940s - Retro

METAL / MATERIAL - 10k yellow gold, natural opal gemstone (approx. 12.7 x 10.9 mm)

MARKINGS / HISTORY - Inside of shank is marked "OB 10K" with a maker's mark for reknown jewelry company Ostby and Barton. Ostby (Co-owner of company) was a first class passenger on the Titanic & was among one of the 1,500 passengers who perished during the tragic iceberg collision.The company was established 1879 in Providence, Rhode Island. At it's time, it was considered one of the leading producers of fine jewelry. The company ceased production in the 1950s. Ostby & Barton jewelry is highly desired by collectors of fine antique jewelry for its beautiful workmanship & historical significance.

CONDITION - Good vintage condition. Yellow gold metal has been professionally polished & cleaned. Genuine opal is secure with some wear & cloudiness; opal play-of-color is more muted. Amazing vintage opal ring!

SIZE / MEASUREMENTS - Size: 12, Ring Head: 14.6 x 13.2 mm, Rise Of Ring Off Finger: 5.5 mm, Shank: 3.6 mm, Weight: 4.2 grams

PRESENTATION - Listing includes a complimentary MJV logo gift box, as shown in last photo. All other boxes are for display only.

AUTHENTICITY - Each item in our shop has been hand-selected and inspected by a GIA Graduate Gemologist. Please see our shop FAQ’s for more details regarding listing disclaimers.

ALR / AJH