Difference between necklace chain thickness. — WE ARE ALL SMITH
Solid Gold Rope Chain (2.5mm) | The Gold Gods
1.7mm Sterling Silver 14k Gold Twist Rope Italy Chain Necklace All Sizes 2 Tone | eBay
Jewelry Atelier Gold Chain Necklace Collection - 14K Solid Yellow Gold Filled Paper Clip Link Chain Necklaces for Women and Men with Different Sizes (2.0mm, 2.5mm), Metal, not known : Amazon.co.uk: Fashion