Frequently asked questions

• Is "cats eye" a single material, or a trade term for the optical effect?

  "Cats eye" is a trade term describing chatoyancy — the moving band of reflected light caused by parallel fibrous or tubular inclusions. The name can refer to natural chrysoberyl cats eye, other chatoyant minerals (cats eye apatite, cats eye quartz, cats eye tourmaline), or manufactured fiber-optic glass, which is widely sold in the bead trade under the same name. The specific material should be disclosed — ask before buying if it isn't specified. Mineralogy matters here because hardness, care, and price differ dramatically between natural chrysoberyl (Mohs 8.5) and fiber-optic glass (roughly Mohs 5.5).
• How do I care for cats eye beads in finished jewelry?

  Care depends on the underlying material. Natural chrysoberyl cats eye sits at Mohs 8.5 and tolerates daily wear, mild soap and a soft cloth, and most ultrasonic cleaners. Fiber-optic glass cats eye is softer (around Mohs 5.5) and scratches more easily — clean with a damp cloth only, avoid ultrasonic and steam, and keep it out of contact with harder beads in storage. For both, avoid prolonged exposure to acids, household cleaners, and abrasive polishing compounds. If the listing doesn't specify the material, treat it as the more delicate option until confirmed.
• How should I orient cats eye beads to keep the chatoyant band visible?

  The light band runs perpendicular to the inclusions, so orientation on the strand matters. On round beads, suppliers typically drill so the chatoyant line crosses the drill hole at right angles — meaning the eye reads across the bead face as it sits on the wire. When stringing, rotate each bead so the bands align consistently down the strand; otherwise the effect appears scattered. For pendants or focal beads, dry-fit before knotting or crimping. The effect is strongest under a single directional light source, so consider how the finished piece will be photographed or worn.
• How is cats eye different from tiger eye?

  Both show chatoyancy, but they're different materials at different price and durability tiers. Tiger eye is a quartz pseudomorph after crocidolite, typically golden-brown to red-brown, sitting at Mohs 7 with a broader, softer silky sheen across the whole bead. Cats eye — whether natural chrysoberyl or fiber-optic glass — shows a single sharp, mobile band of light, often on a translucent or semi-translucent body in green, yellow, blue, or other saturated colors. Tiger eye reads earthy and matte-silky; cats eye reads glassy and high-contrast. For design work, they rarely substitute for each other.
• What does cats eye pair well with in designs?

  Cats eye reads as a focal accent rather than a quiet background bead — the moving light band draws the eye, so most designers use it sparingly. Saturated greens and blues pair well with sterling silver, hematite, and onyx for high-contrast modern pieces; warmer yellows and honey tones bridge into gold-fill, citrine, and smoky quartz. Because the chatoyant effect needs clean bead surfaces to read, cats eye works best in smooth round or oval cuts rather than faceted shapes. 6–8mm rounds suit bracelets and multi-strand necklaces; 10–12mm work as focal beads or in chunky single-strand designs.