This rare 18th century gold (approximately 16.5K) and silver cross is embellished with rubies and rose cut diamonds set in rub-over settings. The center ruby is of an oval cut, other 9 rubies are of a table cut.
The rubies of the cross symbolize the Sacrificial Blood that shed Jesus Christ.
The diamonds are set in silver over gold.
Gold alloy lab report: 68.54% pure gold, 24.66% silver, 6.61% copper, 0.12% zinc, 0.05% nickel.
The two rose gold suspension rings are a later replacement.
Weight 6.12 grams.
Size of the cross without rings 37 x 30 mm (1 1/2 x 1 1/8 in.)
A closely related ruby and rose cut diamond cross from the 1700s is in the collection of Victoria & Albert museum in London: