Cartier signed Lovebirds Brooch set with Chrysoprase, Blue Chalcedony and Diamonds in 18ct Yellow Gold dated 1991
Blue Chalcedony:
Date: dated 1991
PRICE: £5,750
Stock No: SHAPb 4
Special Features:  Brooches remained in favour during the course of the 1990s, but their design moved towards more feminine shapes. Colourful interpretations of nature was the jewellery trend of the 1990s.  Hardness Diamond 10, Chrysoprase 7, Blue Chalcedony 6.5-7 (Mohs scale 1-10).

15ct Yellow Gold and Silver, Sapphire & Diamond stone set "Fly " bar Brooch
Sapphires: 0.40ct approximately
Rose Cut Diamonds: 0.30ct approximately
DATE: circa 1890
Stock no: SHAPb 2
PRICE: £750
Special Features:  In 1890s Brooches were usually smaller and more delicate in design than their earlier counterparts, and worn in large numbers along neckline, or pinned on lace. It was irrelevant if the design and style did not match: all that was necessary was quantity around the neckline. Flies were used to symbolise secrets or secret keeping. 

Hardness Sapphire 9, Diamond 10 ( Mohs scale 1-10 )