Swarovski 12mm Crystal Rivoli sew-ons
$7.50 – $17.50
These remarkably versatile crystal sew-ons have flat backs and two drilled holes near the side edges; the tops are faceted and rise to a center point. They are clear lead crystal with an A/B (or aurora borealis) finish that creates a rainbow effect that will change to reflect the surrounding colors. You can see in the photos how the effect changes: on a white background they can be subtle with a soap-bubble effect but on dark or colored grounds they blaze with color.
Two sizes are available: 10mm round measures approximately 3/8-inch across and about 1/8-inch high; 12mm measures approximately 1/2-inch across and about 3/16-inches high.
Because of the lead content in the crystal, you’ll want to avoid using these on items intended for use by children.