10K Gold Bonded & Sterling Silver. 1.31 grams (0.16 grams/per inch). 2.03 grams (0.25 grams/per inch).
3.22 grams (0.39 grams/per inch). 5.98 grams (0.74 grams/per inch). All weights are written in 8 version, the weight will depend on the length you choose. This chain is made of thick layer of 10K gold; that's 10% of it's weight, and 90% of Sterling Silver.