From the latter half 20th century, this piece is an open circle motif natural diamond brooch / pin. It is made in platinum while the pin assembly is testing 14 kt.

It features 36 round brilliant cut diamonds that weigh about 3.5 cts total weight. The diamonds have nice clarity and average color.

In pre-owned, used condition. Please note, 1 diamond has an open natural visible with magnification.

Hallmark: None visible, but pin is testing platinum and pin assembly is testing 14 kt

Diameter: About 1 3/4"

Weight: About 13.4 grams

Marvelous display of diamonds on this platinum brooch!