Agate’s growing appeal
Dendritic agate – a pale chalcedony with treelike inclusions caused by traces of iron or manganese – is a relatively lowly stone but was a favourite of Russian jewellers in particular. Carl Fabergé used it in many pieces in a country where it is considered a stone of longevity, good health and prosperity.
Three late 19th century agate brooches with rose-cut diamond surrounds formed part of Fellows’ (20…