9ct Yellow Rolled Gold Bolt Ring
Standard 6mm diameter with fixed jump ring.
Used as a clasp on necklaces and bracelets.
Rolled Gold is also known as filled gold or gold bonded and is similar to gold plating but uses a real karat gold overlay which is then bonded to a brass inner core.
Rolled Gold is a more durable alternative to gold plating and as the surface is real gold looks like real gold.