18K Yellow White Gold Diamond Ruby Vintage Cross Pendant

The pendant measures 45 mm North to South (including the bail) by 23 mm East to West

The bail opening measures 7 mm by 4 mm

Weight 3.3 grams 

Stamped with gold punch marks - not readily legible - as shown, tested 18K 

Diamond: approximate total carat weight 0.15 carat (estimated in the mounting)

Rubies: count  16, approximate total carat weight 0.80 ctw (estimated in the mounting)