Early 20th Century Austro-Hungarian 18ct Gold and Platinum Ruby and Diamond Ring feed-agegroup-adult Knoll & Pregizer operated between

Knoll & Pregizer operated between 1887 and 1975 from Pforzheim Germany

The original is described by Pliny the Elder in his Natural History

King Edward VII and Queen Alexandra were the leaders of high society during the late 1800s and early 1900s

where enamel work has a rich tradition

These black mother-of-pearls have a wonderful 'peacock' iridescent of blue and purple overtones

Early 20th Century Austro-Hungarian 18ct Gold and Platinum Ruby and Diamond Ring feed-agegroup-adult Knoll & Pregizer operated betweenA striking early 20th century ring set in 18ct yellow gold with a platinum topped setting, dating to the 1910s. The design bridges the flowing elegance of Art Nouveau and the emerging geometry of early Art Deco, giving it a wonderfully transitional character. At its centre sits an elongated hexagon shaped diamond, a beautiful and unusual choice for the period. Rings of this design more commonly feature a round cut diamond, making this example