Precious metal sheet and wire are sold by the troy ounce (abbreviated ozt). There are 31.1 grams per troy ounce, compared to 28.3 grams per conventional ounce. Why? The troy ounce originated in the Middle Ages, in Troyes, France, and became the traditional unit for weighing precious metals. The majority of our precious metal sheet and wire are cut by hand, so you may receive a bit over or under the number of troy ounces that you order, but rest assured, we do a final verification of the weight, and charge for the actual amount that is shipped to you.
Which crimps fit which beading wire?
Wire Dia. in inches
Wire Dia. (mm)
Crimp Bead Size
Crimp Tube Size
Exception: Most crimp tubes won't hold on 0.010 and 0.012 when closed with crimping pliers. Either flatten with regular pliers, or use size 1 crimp tubes with micro crimping pliers.
What Length Rivets (or Eyelets) to Use:
When making your own custom-length rivets out of wire or tubing, the standard rule (so you can properly finish both ends) is to measure the total thickness of the items to be joined, and then add the wire (or tubing) diameter. See Riveting 101 for more information about making and setting your rivets or eyelets.
The ideal Crafted Findings eyelet length is approximately 1mm (1/32" - 1/16") longer than the total thickness of the pieces you are riveting. If in doubt (textured metal, imprecise measurements, etc.), it's safest to use an eyelet that is a bit too long, rather than one that's a bit too short. Assortments are a great way to get started. Then, if you need more of a specific size, measure that size before you run out, and follow up by ordering specific lengths as needed.
This reference chart is a rough guide to help you decide which rivet or eyelet lengths are likely to work best for new projects.
Quick References for Round Beads
Typical Number of Round Beads per Strand
Q: What are "findings"?
A: "Findings" is the generic industry term for metal jewelry components: charms, bar pins, ear wires, jump rings, etc.
How do you count all those little bits & pieces?
Most findings are packaged by weight. Although we use very accurate counting scales and trays, small variations in each item mean the actual count might vary slightly over or under the marked quantity. We strive to put the exact amount in each bag, although +/- 5% is the standard in the jewelry supply industry.
At 5%, a 1-gross bag could vary over or under by seven pieces. Smaller quantities will be exact; you can expect a bag marked "1 dozen" to contain exactly 1 dozen pieces.
1 ounce (oz)
28.35 grams (gm)
1 troy ounce (ozt)
31.1gm (ozt are used for precious metals)
1,000gm (twenty 50gm bags)
Q: What is a gross?
A: A gross (GR) is 144 pieces
1 gross (GR)
½ gross (½GR)
Q: What is a mass?
A: A mass is 1,200 beads of a single style and color. It is the standard unit of measure for many glass bead manufacturers. Since little or no repackaging is needed, we can offer a substantial discount for masses of many Czech beads. Partial masses are not available at the mass price. When full masses are backordered, they are generally shipped in 3 to 6 weeks. Mass discounts are available for 1,200 of one color of one bead (not for assortments).