Our adjustable ball chain is handmade in 14k yellow gold.  DETAILS 3.0 mm chain width Product image shows 1.5mm chain and 2.0mm chain for comparison Our 3.0mm chain width is recommended for our one-of-a-kind diamond charms over 3 TCW Model is wearing 2, 2.0mm chains (18" and 22") and 1, 3.0mm chain (26") Product image shows 1.5mm chain and 2.0mm chain for comparison For lengths not listed here, contact custom@fiametta.com