10% Off $75+ Use Code GEM10 ⬥ Free US Shipping $50+ ⬥ Order ship from the USA 10% Off $75+ Use Code GEM10 ⬥ Free US Shipping $50+ ⬥ Order ship in 1 business day from the USA

Oolite Jasper · Smooth · Round · 6.5mm, 8.5mm, 10mm

SKU 1RdJasOol8.5S072

77 in stock

19 in stock

Strand Length: approx. 15.5 inches

These natural oolite jasper beads have not been treated to enhance color or clarity in any way.

Oolite is the name given to a stone composed of ooids. What are ooids you might ask?Ooids are carbonate spheres that form from concentric layering of calcium carbonate around a central nucleus (typically a sand grain). Ooids are found in tropical shallow water seafloor environments. They are used by geologists to help understand depositional environments when preforming stratigraphy studies.

If you look closely at the beads you may also find the occasional crinoid stem disk. Crinoids were filter feeding fern-like plant, often referred to as a sea lilies. They date back as far as 500 million years ago.


Bead Count

Count of beads on a strand:

  • 4mm = 85 Beads
  • 6mm = 58 Beads
  • 8mm = 45 Beads
  • 10mm = 36 Beads
  • 12mm = 30 Beads
Note: These are general guidelines. The actually count may be greater or slightly less than stated.
Hole Size

Bead hole size ranges:

  • 4mm = 0.6mm to 0.8mm
  • 6mm = 0.8mm to 1.0mm
  • 8mm = 0.8mm to 1.0mm
  • 10mm = 1.0mm and larger
Note: These are general guidelines. The actually hole size may be slightly larger or smaller than stated.

Customer Reviews

Based on 1 review
Love it!

These are so interesting with their little round ooids!