Frequently asked questions

• Is shell a gemstone, and how does it differ from pearl or mother of pearl?

  Shell is an organic material — calcium carbonate (aragonite or calcite) bound by conchiolin, the same protein structure that builds pearls. In the bead trade, "shell" is a broad category that includes mother of pearl (the iridescent nacreous lining of mollusks), spiny oyster, abalone, conch, and plain calcite shell beads cut from the structural wall. Mother of pearl shows the characteristic rainbow sheen; abalone runs blue-green iridescent; spiny oyster sits orange to deep red; conch trends pink. The species or shell type used should be disclosed — ask before buying if it isn't specified.
• Are these shell beads dyed, and will the color hold up?

  Shell is porous and takes dye readily, so saturated colors — bright pinks, blues, purples, blacks — are almost always dyed. Natural shell colors range from white and cream through tans, grays, and the iridescent tones of nacreous species. Dyed shell can fade with prolonged UV exposure, sweat, and contact with perfume or solvents. Treatment status (natural vs dyed) should be disclosed; if you need colorfast material for a piece that will see heavy wear, ask before buying. For dyed strands, finished pieces last longest when stored out of direct sunlight.
• How fragile is shell, and what jewelry types suit it best?

  Shell sits at Mohs 2.5–4.5 — softer than most silicate gemstones and prone to surface scratching, chipping at drill holes, and dulling over time. It excels in earrings, necklaces, and light bracelets where it won't take impact. Avoid rings, anklets, and stacking bracelets that knock against hard surfaces. Heishi and small rondelle shell pairs well with seed beads, leather, and softer organics like wood, coral, or pearl. Larger coin and tube cuts work as focal beads in summer-weight strung designs. Knotting between beads on silk or nylon protects drill holes from wear.
• How do I clean shell beads and finished shell jewelry?

  Wipe with a soft, slightly damp cloth and dry immediately. Avoid ultrasonic and steam cleaners — vibration loosens layered shell and can crack nacre. Skip commercial jewelry dips, acids (including vinegar and citrus), and ammonia-based cleaners, all of which etch calcium carbonate. Keep shell away from perfume, hairspray, lotion, chlorinated pools, and saltwater; apply scent and cosmetics before putting jewelry on. Prolonged water exposure can lift dye and dull surface polish. Store shell strands flat in a soft pouch, separated from harder stones that will scratch them.
• What shell varieties get confused in the trade, and how do I tell them apart?

  Mother of pearl and shell are often used interchangeably, but mother of pearl specifically means the nacreous (iridescent) inner layer; plain "shell" beads may be cut from the non-iridescent structural wall. Spiny oyster is naturally orange-red and uncommon in deep saturated reds without dye assistance. Lions paw shows a ribbed, scallop-like structure in warm pinks and oranges. Abalone is unmistakable when intact — blue-green iridescent with dark streaks — but resin composite "abalone" is also sold and should be labeled. Conch is matte pink with a porcelain-like surface. Species and treatment should be disclosed.