Adamans 6mm Diamond Tennis Chain vs 5mm Diamond Tennis Chain

Both are 6mm-class tennis chains from Adamans with PVD plating and a lifetime warranty, so the choice comes down to width and stone grade. The 6mm uses VVS1 simulants, passes a diamond tester and has 945 ratings at 4.9; the 5mm is narrower, heavier per length (45g at 18") and has more ratings at 4.8. Buy the 6mm for maximum shine and the higher stone grade; buy the 5mm for a lower-profile chain with a longer size range and a sturdier feel.

• Choose the 6mm Diamond Tennis Chain if you want the bigger, brighter look and the higher-grade VVS1 stones that pass a diamond tester.
• Choose the 5mm Diamond Tennis Chain if you want a narrower, heavier chain with more length options and a more understated profile.