Price & availability on application. The skull portrait of Chief Sitting Bull is part of a collection of unique brooches entitled Sic Transit Gloria Mundi – which translates loosely as ‘How fleeting are earthly glories’ – they are indeed. However grand you are in life we all look pretty much the same in the end; but, even after life, some are more recognizable than others. This piece has utilised the extraordinary talents of eight quite unique craftsmen to bring Theo’s concept to reality. Like miniature cathedrals this series is the result of years of dedication and great artisans honing their skills, to allow them to be able to make such pieces. Hand made in our workshop by 7 brilliant craftsmen using carved mammoth bone, mother of pearl, diamonds, turquoise and coral beads and set in 18ct yellow gold and enamel and hand engraved details.