Antique Victorian Opal and Diamond Brooch, Platinum

Antique Victorian Opal and Diamond Brooch, Platinum, Circa 1890

A striking antique Victorian opal and diamond brooch set with 12 carats of very vivid and colourful opals, and 5 carats of crystal clear sparkling old-cut and rose-cut diamonds mounted in platinum.
The pin is 18ct gold and was added later
Brooch made in the 1850s
Tested positive for platinum

Dimensions -
Length : 5 cm
Width : 4.2 cm
Depth : 1.75 ct
Weight: 25 grams total

Opals -
Quantity : 4 opals
Sizes : 5 ct, 3 ct, 3 ct, 2 ct
Total weight : 12 carats
Treatment : Natural

Diamonds -
Cut : Old cut & rose cut
Quantity of stones :
Main Stone Size : 0.50
Total Weight of Diamonds : 5 ct
Clarity : VS1
Colour : G

Condition : Brooch is pre-owned, no damage, excellent overall condition, please see pictures for a better view of the items condition.