Adamans 6mm Moissanite Tennis Chain vs 5mm Moissanite Tennis Chain

Both are 5mm–6mm moissanite tennis chains in silver with white gold plating, D color and VVS1 clarity, and both pass a handheld diamond tester. The Adamans is wider at 6mm, has more owner feedback and a stated lifetime warranty, but its reviews include tarnishing, clasp wear and finish peeling. The GUU Shop is narrower at 5mm, has a near-perfect but much smaller review base, and ships in a gift box with a cloth, dust bag, warranty card and a free Cuban chain. Buy the Adamans for a bolder look and a written lifetime warranty; buy the GUU Shop for a cleaner finish record and better packaging.

• Choose the Adamans 6mm if you want a wider, more visible chain and a stated lifetime warranty, and you accept that some owners report tarnishing and finish wear.
• Choose the GUU Shop 5mm if you want a slimmer chain with fewer tarnish complaints, proper gift packaging and a free Cuban chain included.