"Antique jewelry object group: engagement ring Country of origin: Although it does not carry any legible control marks we believe this to be of Belgian origin. Style: Art Deco - Art Deco is an eclectic artistic and design style which had its origins in Paris in the first decades of the 20th century. The style originated in the 1920s and continued to be employed until after World War II. The term ""art deco"" first saw wide use after an exhibition in 1966, referring to the 1925 Exposition Internationale des Arts Decoratifs et Industriels Modernes that was the culmination of high-end style moderne in Paris. Led by the best designers in the decorative arts such as fashion, and interior design, Art Deco affected all areas of design throughout the 1920s and 1930s, including architecture and industrial design, as well as the visual arts such as painting, the graphic arts and film. At the time, this style was seen as elegant, glamorous, functional and modern. See also: Art Deco or more info on styles Style specifics: Abstract motives and geometrical forms are quite typical for the Art Deco period. Art Deco moved away from the soft pastels and organic forms of its style predecessor, Art Nouveau, and embraced influences from many different styles and movements of the early 20th century, including Neoclassical, Constructivism, Cubism, Modernism, and Futurism. Its popularity peaked in Europe during the Roaring Twenties and continued strongly in the United States through the 1930s. Although many design movements have political or philosophical roots or intentions, Art Deco was purely decorative. Period: ca. 1920 (events and facts in 1920) Material: platinum and 18K yellow gold (more info on precious metals) Extra information: Betrothal rings were used during Roman times, but werent generally revived in the Western world until the 13th century. The first well-documented use of a diamond ring to signify engagement was by the Archduke Maximilian of Austria in imperial court of Vienna in 1477, upon his betrothal to Mary of Burgundy. Before the 20th century, other types of betrothal gifts were common. Before the end of the 19th century, the bride-to-be frequently received a sewing thimble rather than a engagement ring. This practice was particularly common among religious groups that shunned jewelry. Engagement rings didnt become standard in the West until the end of the 19th century, and diamond rings didnt become common until the 1930s. Now, 80% of the women are offered a diamond ring to signify engagement. (from: Wikipedia) Diamonds: Three old mine brilliant cut diamonds with a total estimated weight of approx. 0.28 crt. four old mine brilliant cut diamonds with a total estimated weight of approx. 0.12 crt. 14 rose cut diamonds. We do not have the weight of the diamonds which is normal in our trade when it comes to rose cuts. Note: All diamond weights, color grades and clarity are approximate since the stones were not removed from their mounts to preserve the integrity of the setting. (approximate color and clarity: G/H, i/si) Total diamond weight: approx. 0.40 crt. (without the rose cut diamonds) Precious stones: 28 carre cut sapphires (more info on precious stones) Birthstones: Diamond is the birthstone (or month stone) for April and sapphire for September. (more info on birthstones) Hallmarks: Illegible remains. (more info on hallmarks) Condition: excellent condition (more info on our condition scale) Dimensions: length of top of ring 1.80 cm (0.71 inch) Weight: 3.90 gram (2.51 dwt) Ring size Continental: 62 & 19_ , Size US 10 , Size UK: T_ Resizing: Free resizing, but because of the the way the ring is made, we cannot guarantee to make it on every size; so please ask in advance (only for extreme resizing we have to charge). (more info on ring sizes) Reference N: 10248-4339 Copyright photography: Adin, fine antique jewelry "