Vintage Gold plated Sterling silver cross with Topaz and Marcasite stones

Vintage Sterling silver cross with Topaz and Marcasite stones
and gold plated elements 

Sterling silver mark: 925
weight 15.4 g;
height 67 mm;
width 46 mm;
Topaz diameter: 12 mm / 12 mm;
Marcasite 2.37 mm / 2.37 mm;
condition: seen photos