The stones in this catalog with the deepest histories - turquoise, cinnabar, jade, lapis - have their own pages. These two don't need one each, but both deserve an honest introduction, because both are surrounded by exactly the kind of confusion we exist to clear up.
Cat's Eye
The cat's eye effect - a bright line that slides across the stone's surface as it moves, like a pupil opening and closing - is called chatoyancy (from French, œil de chat, "eye of the cat"). Two very different materials make it, both are sold under the same two words, and the distance between their prices is about four orders of magnitude. So let's be exact.
Chrysoberyl cat's eye (猫眼石, mao yan shi) is the original: a rare gemstone in which fine needle-like inclusions reflect light into a single sharp band. The finest comes with a honey-brown body and a line so sharp it looks drawn. Historically tied to Sri Lanka (Ceylon), where tradition held that a cat's eye talisman protected its owner - "all-seeing" protection in one moving line. Real chrysoberyl cat's eye is a serious gem: fine stones cost real money, and bead strands of it are essentially collector events.
Fiber-optic glass "cat's eye" is the bead-market standard: bundles of optical glass fibers fused into rounds, in a dozen colors, each with a perfect white line. This is the cat's eye in every bead shop on earth, and it is manufactured, affordable, cheerful, and - the point - not a gemstone and not trying to be one, unless someone lets you assume it is.
Which is which, in the hand: a strand of real chrysoberyl costs like a used car; a strand of fiber-optic glass costs like lunch, and there is no in-between where a $15 strand turns out to be the rare gem. Glass lines are pure white, perfectly straight, identical on every bead; natural chatoyancy varies and wobbles slightly. And fiber-optic beads come in colors nature doesn't make - hot pink, lime. Chrysoberyl is honey, greenish, or brown.
The protection association belongs to the tradition, and we present it as folklore, the same honest framing as everywhere in this catalog. The glass version carries the look and the idea at a price that invites wearing it without ceremony. Both are fine. What we don't do is sell one while letting you picture the other.
Care: glass fiber beads are genuinely tough - avoid sharp knocks and abrasives. Chrysoberyl (8.5 Mohs) is very hard; store it apart from your other jewelry so it doesn't scar them.
Sugilite
Sugilite (舒俱来, shu ju lai) is the youngest stone in this catalog by far, and one of the most saturated. Named in 1944 for Japanese petrologist Ken-ichi Sugi, it was a museum curiosity until the late 1970s, when major deposits were found at the Wessels mine in South Africa's Kalahari manganese field. Its color comes from manganese: a rich grape-to-royal purple that takes a glorious polish. Almost everything on the market comes from that one region, which makes sugilite a stone whose story you can actually tell in a paragraph.
It has no centuries of imperial history, and its meanings are modern accordingly: the metaphysical trade associates it with spirituality, emotional protection, and insight, and honest sellers present it as exactly that. We like it for what it verifiably is: a genuinely rare-in-jewelry mineral with extraordinary color, discovered in living memory, mined in one corner of one country. That's a good story without embellishment.
And because it isn't famous, its imitations rely on buyers not knowing it exists at all. The lookalikes: charoite (Russia's purple stone - swirly, fibrous, lavender, same aisle); dyed howlite and magnesite (the cheap impersonators - uniform color, dye rubs off on a damp white cloth); and "sugilite" composite (powder and resin, the same play as composite turquoise, which should be labeled as such and often isn't).
Care: 6-6.5 Mohs, reasonably tough; store apart from quartz and jade. Keep it from prolonged sun - like many manganese-colored stones, strong light can fade it over years. No chemicals or ultrasonic. It takes oils well; wear deepens the polish.
🔗 Our pieces in these stones: Purple Nurple (sugilite) · {add as listings are written, cat's eye pieces specify which kind} Related: Turquoise · Jade · Authenticity Guides · Claims We Don't Make