If you are unable to measure the recipient, the average small size is approximately 7-inches and stretches to 8-inches. A charm can be added at any place in the design. Consider adding the charm to a jumpring then placing the jumpring onto the bracelet after it is completed.
If you are designing a bracelet with a clasp, measure around the widest section of the wrist and remember to include the overall clasp length into your measurements. The charm can be added at the clasp using a jumpring. To make the design adjustable so it can be worn smaller than 7 inches and then beyond 7 inches, consider incorporating a length of chain at the end of the design so the bracelent length ranges from 6 to 7-1/2 inches.
As for bead size, consider 6mm or 8mm pearls with 6mm or 4mm crystals.
For a simple formula to calculate how many beads needed:
1-inch = 2.54cm = 25.4mm (1cm = 10mm). Multiply the length of the bracelet by 25.4 and divide by the size of the beads in millimeters.
- 7-inch bracelet made with 4mm beads: Number of beads = 8x25.4/4 = 44.5
- 7-inch bracelet made with 6mm beads: Number of beads = 7x25.4/6 = 29.6
- 7-inch bracelet made with 8mm beads: Number of beads = 7x25.4/8 = 22.2
Note: Since beads may be irregular, this number is approximate.
If you are knotting between the beads, factor in 1 to 2mm for each knot, depending on the thickness of the thread.
- Michelle Wood, Jewelry-Making Expert
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