Pull a moissanite tennis bracelet out of the drawer after a month of daily wear and the stones may look flatter than the day you bought it. Many owners reach the same conclusion at that moment: the stone must be going cloudy. Usually the stone is the same as it was on day one, and the trouble is a film coating it.
Miami The Jeweler, the downtown Miami shop founded by Samuel Madrid, works with VVS1, D-color moissanite set in 925 sterling silver, alongside natural and lab-grown diamonds set in solid gold. When stones look dull, the difference between buildup and damage decides what an owner should do next.
The short answer
High-quality moissanite does not become cloudy because it ages. Moissanite is a hard, stable gemstone, silicon carbide, rating about 9.25 on the Mohs scale. It does not absorb oil, and ordinary wear does not cloud the stone itself.
Like diamond and other gemstones, though, moissanite collects a film from everyday life: skin oils, lotion, sunscreen, soap residue, hair product and dust. That film reduces the stone’s apparent brilliance. Cleaning removes it, and the brilliance comes back when buildup was the cause.
Why a thin film makes such a difference
A faceted stone returns light by bouncing it off the angled facets on its underside, called the pavilion, and sending it back up through the top. That reflection depends on a clean boundary between the stone and the air behind it. A film of oil on those lower facets interferes with the reflection, so more light leaks out the back and less returns to your eye.
Stone-set jewelry makes this worse. A chain, bracelet or iced pendant has dozens of small openings behind the stones where residue collects and where a cloth cannot reach. The stones on top can look clean while their undersides are coated. Pieces worn against skin every day, especially bracelets and rings, collect buildup fastest.
How to clean moissanite jewelry at home
Fill a small bowl with warm water and a few drops of mild dish soap. Let the piece soak for several minutes to loosen the film. Brush gently with a soft toothbrush, paying attention to the backs of the stones and the spaces around the prongs. Rinse in clean warm water and dry thoroughly with a soft, lint-free cloth.
On yellow-finish pieces, which MTJ makes in 18K gold-plated 925 sterling silver, keep the brushing gentle and skip abrasive polishes, which can wear plating. Ask a jeweler before putting stone-heavy or plated pieces in an ultrasonic cleaner, since the vibration can work on settings and finishes.
Prevention takes less effort than cleaning. Put jewelry on after lotion and sunscreen have dried, take it off for the gym and the pool, and wipe it down after wearing.
When cleaning will not fix it
Some changes in appearance have nothing to do with buildup, and soap and water will not reverse them. Sterling silver can tarnish, darkening the metal around the stones and making the whole piece look duller; that calls for silver care, with extra caution on plated pieces. Gold plating can wear through on high-contact areas. A prong can bend and let a stone tilt, so it catches light at the wrong angle. A hard knock can chip or abrade a stone’s surface, because no gemstone is indestructible, including diamond.
If a piece still looks off after a proper cleaning, or if any stone looks crooked or moves, take it to a jeweler for inspection. Those are metal, setting or surface problems, and they need hands-on repair.
Starting clean
The quality of the stone at purchase matters too. MTJ uses VVS1, D-color moissanite exclusively for its moissanite line, so the stones start clear and colorless, and the shop has found through its production experience that the D-color standard keeps stone-heavy pieces looking uniform. Moissanite’s higher refractive index and greater dispersion than diamond give those stones strong white brilliance and colorful fire. Regular cleaning keeps that performance visible.
One review on the MTJ site captures the reaction a well-kept piece is meant to get: “OMG I’m in love with my necklace and the amazing customer service.”
For questions about cleaning or a piece that does not look right, Miami The Jeweler’s showroom is at 22 NE First St, Suite 225, Miami, FL 33132, and the shop’s website has its full collections.
