I am proceeding into uncharted waters and I need to know what
gauge of gold to use for a tube setting. The stones are faceted
Are you going to cut a seat into the tube, or insert a bearing in
the tube on which the stone will seat? Will these be rings, pendants,
??? Durability will be an issue to consider...
For cutting a seat, I'd not go less than 18ga wall thickness, so
that you can split the thickness, having a seat of 0.5mm, and another
half mm to roll over the crown. If it's a ring, I'd go even thicker.
For inserting a seat, you could get away with 24ga, as the wall
thickness only has to hold the stone down against the seat. Again,
only a minimum here.
I tend to err on the side of caution and durability, so if cost of
materials is not a huge issue, I'd go as heavy as the design will
Most commercially produced bezels I see for ovals are in the range
of 16-14ga thick, and have a seat cut out of them already (so the
material remaining at the top, above the seat, is 20-18ga).