The JAR Lilac Brooch  is made up of two life-size, gem-laden, lilac sprays structured in aluminum, gold and silver, and pave-set with 10,500 diamonds, various shades of lilac sapphires, and green garnets. This masterpiece of the jeweler's art took two and a half years to construct.

 

An interesting detail, it seems to me, if I can trust the photograph, that the sides of each metallic 'lilac' bloom has been enameled or, more likely the aluminum has been anodized in a violet colour to add to  the impression that the metal has disappeared.  

c.2001. Photo by Jozsef Tari