A large collection of cut steel jewels

A large collection of cut steel jewels, late 18th/early 19th century, comprising: two pairs of bracelets, lengths 17.5cm each; a tiara, centring on a floral motif between spikes of wheat sheaves, height at front 3.8cm, inner curve 46cm; a longchain, length 156cm; and two chatelaines, one set with carnelian, length of longest 18cm, necklace length 70cm; a pair of pendent earrings, length 6.3cm, hook fittings, length 6.5cm each; and a collection of components