The pair of custom earrings do not have a gold mark but were tested with nitric acid and a "kee" tester to be 14k solid gold. Together they weigh 6.6 grams. The earrings are for pierced ears and measure 3/4" in diameter. Each holds 4 round natural opals that measure 2.5 mm in diameter. The 8 total opals have an approx total weight of .40 cts. Each earring also holds 10 round single cut clean and white natural diamonds. The 20 total diamonds have an approx total weight of .46 cts. There is a loop at the bottom of each earring to hang extra attachments. The earrings are in nice condition.