Prism Square Studs

No, and we will never call it one. Moissanite is its own gemstone, lab-created silicon carbide, with more fire than a diamond (dispersion 0.104 against 0.044) and a hardness of Mohs 9.25. This stone ships with a GRA certificate, which our production partner includes for moissanite of 0.1 ct and above; the color and clarity grades on this page are the maker's. It is named as moissanite everywhere it appears on the site.

The stone does not. Moissanite is lab-created silicon carbide, chemically stable at Mohs 9.25, and it does not haze, yellow or degrade with time. What people call cloudy is almost always a film of skin oil, lotion or soap sitting on the facets — five to ten minutes in warm soapy water and a soft brush underneath the stone brings it back. The clouding people fear comes from cubic zirconia, which is far softer.

Often, on a basic thermal tester: moissanite conducts heat much as diamond does, so pen testers can read it as diamond. A dual moissanite/diamond tester tells them apart, and so does a jeweller with a loupe. We sell it as moissanite and name it as moissanite everywhere, so this should never surprise you.

A jeweller will know. Moissanite is doubly refractive where diamond is singly refractive, and a combination tester identifies it immediately. Day to day the tell is fire: dispersion of 0.104 against a diamond's 0.044 throws more rainbow, most obviously in sunlight and in larger stones. Our own guide puts it plainly — if a diamond is what you want, buy a diamond.

Platinum-plated 925 sterling silver, set with lab-created moissanite. No gold vermeil, no gold-fill, no unnamed alloy. Every other piece in the house names its own metal and main stones on its page.

It can, slowly, with exposure to air and skin. That is the metal living, not a fault — silver reacts with trace sulfur in ordinary air, and every sterling piece from every house does it. A soft polishing cloth brings it back to bright.

We will not make a claim about how your skin reacts, because no page of ours publishes one. What we do publish is this piece’s composition: 925 sterling silver, 92.5% pure silver alloyed for strength, with a platinum plating; its base is sterling, not brass or another base metal. Silver darkens by reacting with air, and that polishes back. If you have reacted to silver before, write to hello@maisonnoctaura.com before you order.

Take sterling off before showering, swimming, exercising or sleeping. Chlorine and humidity speed tarnish, a hard knock can chip any gemstone, and prongs bend long before stones fail. Fine chains also kink and stretch under a sleeping body's weight.

Maison Noctaura is the trading name. The business is Maison Noctaura LLC, registration number 42-4033580, and the person responsible for what is published is named on the site: Lee Kung. The full registered details, including the postal address, are published on our legal notice at maisonnoctaura.com/policies/legal-notice, so they can be checked rather than taken on trust.

There are none published, and we will not invent any. What we can put in front of you instead is checkable: the company is Maison Noctaura LLC, registration 42-4033580, with a named person responsible for the site and the registered details in full on our legal notice at maisonnoctaura.com/policies/legal-notice. Every order also carries a 7-day Arrival Guarantee for a piece that arrives damaged, defective or wrong; we do not take change-of-mind returns and do not pretend otherwise.

What you pay for is on this page and in the box. Platinum-plated 925 sterling silver on a sterling base. Lab-created moissanite, not cubic zirconia. A GRA certificate for this stone, in the box. A velvet jewelry box (moissanite ships in velvet instead of the ribboned drawer box) and a polishing cloth; the packing slip lists the pieces and carries no prices. Tracked delivery, US arrival in 5–8 business days, duties prepaid. A 7-Day Arrival Guarantee if it arrives damaged, defective or wrong. And a registered company, Maison Noctaura LLC, named on our legal notice. Hold any other listing to the same list.

Our pieces are selected for Maison Noctaura and produced by our supply partner, and some travel from overseas. We do not run a workshop or a domestic warehouse, and we would rather say that than imply one. Orders typically ship within 1-3 business days and travel tracked.

Orders typically ship within 1–3 business days, and in the U.S. delivery is typically about 5–8 business days counted from when you place the order — that preparation sits inside the window, not added to it. Those are estimates rather than guarantees, and we quote the total rather than a flattering best case. Outside the U.S. the published windows are U.K. 5–8, Europe 4–10, Canada 7–10, Australia 5–10 and elsewhere 7–14, counted the same way. Tracking goes out the moment it ships. Every order ships duties-paid (DDP), so nothing should be asked of you on delivery; if a carrier ever presents a charge, write to hello@maisonnoctaura.com before paying it.

We do not take change-of-mind returns. If a piece simply is not what you hoped for, or the size or style was ordered in error, we cannot take it back — a piece cannot be resold once it has shipped, and we would rather tell you that before you buy than after. What we do cover is arrival: a piece that turns up damaged, defective, or not the item you ordered is a free replacement, or a refund where we cannot replace it, when you email hello@maisonnoctaura.com within 7 days of delivery. There is nothing for you to pay. Whatever cancellation rights the law where you live gives you are unaffected.