Antique diamond, pearl and purple enamel pansy brooch pendant

To the middle an old European round brilliant cut diamond of approximately 0.75ct,

The violet enamel petals shaded paler toward the white enamel centres and with black naturalistic markings, the petal rims bordered by seed pearls, mounted in 14ct yellow gold, hinged pendant loop to verso and pendant hook, maker's mark and '14K' to pin catch
Weight: 12g