This sterling silver half-tube setting holds one 8 x 6mm oval cabochon or cameo and features 2mm walls at the narrow ends of the setting to secure your stone. Pre-cut seats provide a professional start to stone-setting and help ensure level setting. Tube settings are literally cut from (or cast as) a tube with enough thickness to allow a seat for the gemstone to be cut into their interior walls. The setting is finished in roughly the same way as a bezel; the tube walls are pushed inward and burnished over the girdle of the stone to hold it securely in place.
• Cast tube settings have a thicker wall than die-struck versions; the thicker walls allow you to thin the walls slightly if necessary to ensure a perfect fit. Because the walls are thicker, they may be somewhat more difficult to set.
• IMPORTANT: Sterling silver is an alloy containing metals that react with chemicals found in air and produce tarnish; high moisture levels, exposure to sunlight and contaminants such as salt water increase this reaction. Take steps to protect your sterling findings by keeping them in airtight packages, use tarnish-resistant products (such as tarnish tabs or strips) that absorb harmful chemicals, and store sterling findings in a cool, dry place. Most tarnish is easily removed by polishing with a mild abrasive or soaking in an anti-tarnish solution.