One earring butterfly back is 14K gold, everything else are 18K gold.

Weight: 44.7 Grams
Stone: Approx 4.65 TCW (0.0067-0.02 ct) H/I VS Diamonds
Earrings: 36.5 x 7.0 mm
Bracelet Size: 5.75 Inches
Necklace: 34 Inches
Hallmark: 750, 18K Tested. One butterfly back-14K

ITEM #: BR-678-041822-06