14k yellow gold diamond cross and chain. Contains 75 round diamonds, 0.65 CT total diamond weight, G-H color, VS2-SI1 clarity. Shared prong setting style. Approximate measurements of the cross: length 2.5 in, 1.5 in width, and 1/8 in thick (3 mm). 18 inch diamond cut cable chain width/gauge about 1.5 mm, lobster clasp/lock. Chain by itself weighs about 2.4 grams. Chain and cross weigh about 6.8 grams.