Art Deco split pearl, diamond and onyx dress ring

A gorgeous little ring, with a geometric look.
the perfect piece would for any jewellery collection.

The finer details:

Metal: No marks, tests as platinum.
Ring size: N1/2. 
Gemstones: Estimated diamond weight: 0.20ct. Approximate cultured pearl diameter : 4.4 by 4.4mm
 Dimensions: Length of ring head: 1cm.
Weight: 2.2gm
Condition: Good antique condition. Light surface scratches, in keeping with age. Ring has been re-sized. Thinning to band. some wear to nacre