About this stone
Color
TanCreamBrownGray
Origin
MoroccoUSAMadagascarChina
Mohs hardness
5–7 (varies by mineralization)
Treatment categories
Natural
Industry-standard treatment
Natural — fossils are organic remains replaced by silica, calcite, or other minerals over millions of years
Mineral chemistry
Variable — typically silicified or calcified preservation of organic remains (shells, bone, plant)
Crystal system
Mixed
Stone family
Organic fossil
Common cuts
Round
Common sizes
6mm8mm10mm
Care notes
Care depends on mineralization (Mohs 5–7). Mild soap and soft cloth; avoid ultrasonic for porous material.
Related stones
Petrified Wood, Fossil Coral, Ammonite, Amber
Frequently asked questions
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What is an 8-inch fossil strand for?
An 8-inch strand is the bracelet-length format — roughly the bead count you need for a single stretch bracelet on standard wrist sizes, with a little room for knots or a clasp depending on how you finish. It's the same fossil material Dakota stocks on the 16-inch design strand, just cut to half-length so bracelet-makers aren't paying for beads they'll set aside. If you're stringing necklaces or longer designs, the 16-inch parent collection is the better starting point. -
How many fossil beads per 8-inch strand?
Rough counts for an 8-inch strand: about 25 beads at 8mm and about 20 beads at 10mm — the two sizes currently stocked in this collection. Actual count varies a bead or two depending on exact diameter tolerance and drill-hole spacing. For a standard 7-inch stretch bracelet on 0.7mm elastic, one 8mm strand usually finishes a single bracelet with a couple of beads left for matching earrings or a spare. Exact count per SKU should be disclosed. -
What jewelry works best with 8-inch fossil strands?
Stretch bracelets are the most common build — one 8-inch strand of 8mm rounds finishes a standard wrist with elastic cord. The fossil's earthy, matrix-driven look pairs well in multi-strand stacks with other organic neutrals (jasper, picture stone, agate) or as a grounding element next to brighter color stones. 10mm rounds give a heftier single-strand bracelet for men's designs or chunkier stacks. Wrap bracelets on leather work too if you space the fossil beads with smaller accents. -
Does Dakota carry fossil in 16-inch strands?
Yes. The 16-inch parent collection is at /collections/fossil-gemstone-beads and carries the broader cut and size range for designers working on necklaces, longer bracelets, or production runs where the per-bead math favors the longer strand. The 8-inch assortment here is the bracelet-focused subset — same material, cut to a length that matches single-bracelet builds. -
What cuts of fossil come in 8-inch?
Current 8-inch stock is round in 8mm and 10mm — the two sizes most bracelet-makers reach for first. Fossil is a sedimentary material, so expect natural variation in matrix pattern and color from bead to bead within a strand; that's the look, not a defect. Any stabilization or surface treatment should appear on the individual listing — ask before buying if it isn't specified. For other cuts or sizes in fossil, check the 16-inch parent collection.