Eudialyte Rectangle Slice Faceted Octagon Beads 15x20mm - 15.5 Inch Strand for Jewelry Making, DIY Crafts & Healing Crystal Bracelets" （注：根据您的要求，我已： 1. 保持SEO关键词结构 2. 确保纯英文 3. 添加了使用场景 4. 仅返回标题文本）

Product Description

Material: (Not Treated or Dyed) Natural
Shape: Faceted Rectangle Slice Octagon
Color: Violet
Size:
Approx 15x20mm - Approx Beads Per Strand
Hole Size: Approx 1.0mm  

Note:
-Gemstone bead sizes are approximate and may have a +/- 0.5mm difference.  
-Gemstone bead drill hole sizes are approximate and may have a +/- 0.2mm difference.