the 'saddle' and shank carved of a single piece of corallium rubrum and embellished with three ribs pave set with round brilliant cut diamonds, mounted in lined in platinum, French assaymark, signed 'Cartier Paris, crossed C's workshop mark for Cartier, accompanied by IAJA Expertise report no. XP1857-270824 signed by Olivier Bachet & Bernhard Berger declaring that in their opinion this is a 'genuine Cartier item' from Cartier Paris Length of head 2.5cm / 1''
Height of head 0.9cm / 5/16''
Width shank at back0.6cm / 3/16'' Weight: 11g
Late 19th century five stone ruby ring, c.1890, the graduated cushion cut Burma rubies, approximately 4.10cts, with eight rose cut diamond points in between, to a pierced and scroll engraved gallery, fluted shoulders, mounted in 18ct gold, stamped '18CT', accompanied by GCS report no. 5776-4880 giving a Burma origin opinion for the rubies and that they show no evidence of heat treatment