The crystal market is full of imitations — dyed stone sold as something rarer, glass passed off as quartz, and plastic beads with a convincing name. Most of it is not sophisticated, and once you know what to look for you can spot the obvious fakes yourself. This guide covers the common imitations, the simple checks anyone can do at home, and the warning signs that should make you pause before buying. We would rather you buy well, from anyone, than be fooled. For the stones themselves, our crystal guide describes each one we use.
The three most common fakes
Most imitations fall into three groups. Dyed stone is the biggest — cheap, porous stone (howlite, agate, quartz) dyed to imitate pricier stones like lapis lazuli or turquoise. Glass and resin are next — moulded to look like quartz, amethyst or "rainbow" stones, often with tell-tale bubbles. And man-made stone sold under natural-sounding names — "goldstone" (glass with copper flecks, sold as sunstone), "cherry quartz" and "blue obsidian" (both glass), and reconstituted or "created" stone made from ground-up powder and binder.
The temperature test
Real stone is a poor conductor of heat, so it feels cool to the touch and stays cool for a moment when you first pick it up. Glass warms up quickly, and plastic feels warm or neutral almost immediately. Hold a bead against your cheek or the back of your hand: genuine stone has a distinct, lasting coolness. It is not a perfect test on its own, but combined with the others it is a good first filter.
The weight test
Natural stone is denser than plastic and most glass, so a real bracelet has a reassuring heft for its size. Plastic beads feel suspiciously light. If a "stone" bracelet feels like it could be a toy, it probably is one. This is easiest to judge once you have handled a few real pieces — the difference becomes obvious quickly.
Look for natural imperfection
This is the most useful sign of all. Real stone is almost never perfectly uniform: it shows variation in colour from bead to bead, small inclusions, faint internal lines, and subtle differences in pattern. Fakes are often too perfect — identical, flawless, vividly even colour with no character. Air bubbles trapped inside a bead are a dead giveaway for glass. Paradoxically, a few natural flaws are a sign of authenticity, not poor quality.
Watch out for suspiciously vivid colour
Nature rarely produces neon. If a stone is impossibly bright — electric blue, hot pink, vivid purple — and sold cheaply, it is very likely dyed or glass. Dyed stone sometimes shows colour concentrated in cracks and crevices, where the dye pooled. You can occasionally detect dye by wiping a bead with a cotton pad lightly dampened with acetone (nail polish remover) in a hidden spot — if colour transfers, it has been dyed. Do this cautiously, as it can mark some surfaces.
Stones that are especially faked
Some stones are imitated far more than others, so buy these with extra care: turquoise (often dyed howlite), lapis lazuli (dyed jasper), moonstone (sometimes opalite glass), citrine (often heat-treated amethyst, which is legitimate but should be disclosed), and sunstone (goldstone glass). "Rainbow" anything — rainbow quartz, rainbow obsidian — is worth a closer look, as the effect is sometimes added artificially.
Treated is not the same as fake
It is worth being clear: many legitimate stones are treated, and that does not make them fakes. Heat-treating, stabilising porous turquoise, and gentle waxing are all common, accepted practices — the issue is only when a treatment is hidden or a stone is sold as something it is not. An honest seller will tell you if a stone is dyed, stabilised or man-made. The problem is deception, not treatment itself.
The simplest protection: buy from someone who tells you
No home test beats buying from a seller who states plainly what each stone is — natural, treated, or man-made. Ask the question directly; a trustworthy seller will answer without hesitation. Be wary of vague language, prices that seem too good to be true, and listings that avoid naming the material precisely. At Yoshiko, we tell you what every stone is, including when something is dyed or man-made, because we would rather keep your trust than make a sale.
The Yoshiko view
You do not need to be an expert to avoid the obvious fakes — cool to the touch, a little heavy, naturally imperfect, and sold by someone who will tell you what it is. Those four together catch most imitations. We think honesty about materials is the whole foundation of this business, so we will always tell you plainly what you are buying. To read about the individual stones and what each one should look like, browse our full crystal guide.
