• This is the SAME setting as Ebay item #172449987926 listed by a jeweler... (I am not a jeweler).
• art nouveau / deco (1930's) has filigree mount in platinum
• Can hold a stone 7 mm to 7.5 mm (1.25-1.50 carats)
• 4 old European cut diamonds (I do not know the carats, color or clarity)
• 14k solid yellow gold & platinum - it's marked on the inside...see picture
• weight 2.5g