A collection of paste shoe buckles, late 18th/early 19th century

A collection of paste shoe buckles, late 18th/early 19th century, comprising: a pair of blue and colourless paste buckles; two pairs of blue paste buckles; a pair of violet and colourless paste buckles; and eight assorted buckles variously set with blue, violet, green and colourless pastes, mounted in silver and base metal; largest 8 x 7cm