Vintage modernist designer brooch . It has an abstract modernist gold vermeil design with pin and rollover clasp to the rear. The brooch measures approximately 4.5 x 3.8 cm. Weight is 18 grams. It has makers marks "UK"  and silver hallmarks for London 1968. Very good condition.
 

Condition: Very Good
Colour:Gold
Metal 4.5 x 3.8 cm 
Era: 1968