Art Deco Calibre-Cut Ruby & Diamond Bar Pin c. 1920s loose pearl and was granted the title

and was granted the title of Marquise de Pompadour

and members of royal families

materials: platinum over yellow gold- 14 karat

The ring is currently a size 9

materials: white gold - 14 karat

Art Deco Calibre-Cut Ruby & Diamond Bar Pin c. 1920s loose pearl and was granted the titleThe clean lines and striking combination of rubies and diamonds make this bar pin a wonderful example of Art Deco design. At its centre are three slightly graduated old mine cut diamonds, framed by calibre cut rubies and rose cut diamonds. Calibre cutting is a specialised technique in which each gemstone is individually shaped to fit a specific design, requiring a high degree of craftsmanship and precision. The result is a seamless flow of colour that