These pearls are made of synthetic ruby. They retain heat much longer than quartz and elevates flavor. These come in sets of 2 and sets of 5.

*Frame for display purposes only

**These are pretty solid and made from, lab grown synthetic ruby. The shape isn't exactly perfect on a lot of these. If I throw in one that I question, I'll throw in an extra. Most are as in picture as far as shape quality goes. All quartz pearls have precision shaping.

These are highly recommended with the R17 Globstopper and the UFO) Riptide Cap (auto spinning)