Moissanite is the stone most people buy when they want the look of a diamond without the price. It is not a fake diamond and it is not cubic zirconia. It is its own mineral, silicon carbide, and it behaves differently to both.
Here is what the differences actually are, in the terms that matter when you are wearing it.
Sparkle
This is the most visible difference and the one people notice first. Moissanite bends light more than diamond does, which produces more of the coloured flashes jewellers call fire.
In bright light, particularly sunlight, moissanite throws noticeably more rainbow than a diamond of the same size. Some people love that and buy moissanite specifically for it. Others find it reads as more theatrical than the white sparkle of a diamond.
Neither is better. It is worth knowing before you buy, because it is the thing that most distinguishes the two to the naked eye.
Hardness and everyday wear
Diamond is the hardest known mineral. Moissanite sits just below it and well above every other stone used in jewellery.
For practical purposes this means moissanite handles daily wear without any special care. It resists scratching from ordinary contact, keeps its polish, and does not cloud over time. It is genuinely an everyday stone rather than an occasion one.
This is the main difference from cubic zirconia, which is considerably softer, scratches with normal wear, and goes dull within a year or two. If you have had a CZ piece lose its sparkle, that is why, and moissanite does not do it.
Price
The headline reason most people are here. A moissanite stone costs a fraction of a diamond of comparable size and appearance.
The practical consequence is scale. For the price of a modest diamond stud you can wear a larger, more visible moissanite, which matters for earrings where size is most of the effect.
Will people be able to tell?
At conversational distance, in normal light, no. In direct sunlight the extra fire is visible to someone who knows what to look for.
A jeweller with a tester will identify it immediately, because moissanite conducts heat and electricity differently to diamond. That is a detection question rather than a quality one.
Colour and clarity
Modern moissanite is produced to be colourless or near-colourless, and most of what you see sold today falls in that range. Older material sometimes showed a faint yellow or green tint under certain lighting; that is largely a historical problem.
Because moissanite is created rather than mined, clarity is consistent in a way mined stones are not. You are not paying a premium to avoid inclusions.
Where moissanite makes most sense
Earrings especially. Earrings are seen at a distance and in motion, which plays to moissanite's strength and away from the close inspection where differences show. They are also the piece where size does the most work, and moissanite is where the size is affordable.
Everyday pieces. Something worn daily takes knocks. A stone that shrugs those off without costing a fortune is a sensible thing to own.
Pieces you want in several sizes or styles. The price difference means owning a few rather than agonising over one.
Caring for it
Warm water, mild soap and a soft brush. Rinse and dry with a lint-free cloth.
Moissanite itself is unaffected by ordinary household chemicals, but the setting may not be, so avoid bleach and harsh cleaners for the metal's sake rather than the stone's.
Take pieces off before swimming in chlorine, which is hard on metal settings over time.
Shop moissanite earrings.
