FAQs

It’s our commitment to elite jewelry without the traditional diamond industry markups. We exclusively select stones that meet The Stdiam Standard™—utilizing the top 0.1% of premium moissanite to ensure a look that is completely indistinguishable from flawless diamonds to the naked eye

We offer a premium range from 1.00 to 10.00 carats depending on the style, with most of our signature pieces immediately available in 1, 2, and 3 carats

You can easily refer to our online Ring Size Guide. If your order doesn’t provide the perfect fit, don’t worry—we offer seamless, complimentary size exchanges

Our core pieces are crafted with 8-layer 18K gold or white gold plating—up to 5x thicker than standard.

Yes, we provide a Complimentary Laser Engraving Service for the inner band of eligible rings. Please note that because engraved pieces are permanently personalized, they are considered final sale and cannot be returned or exchanged

Yes. We proudly ship to over 150 countries worldwide through trusted, fully insured global premium couriers

Because each Stdiam creation is meticulously handcrafted to order, our fulfillment process consists of two distinct stages:

• Crafting & Production: 5–7 business days for our master artisans to perfect your design.
• Insured Shipping: 7–12 business days for secure transit via our trusted premium global couriers.

In total, please allow 12–19 business days from your purchase date for your bespoke piece to arrive. A tracking link will be sent automatically as soon as your package is dispatched.

Once your package ships, a shipping confirmation email containing your tracking number will be automatically sent to you. You can track your shipment live at any time directly through the Order Tracking page on our website

Yes, provided that your package has not yet left our fulfillment facility. Please email us immediately at support@stdiam.com with your original order number.

We’ll make it right. Just contact us and our team will assist you.

No stress—we offer free size exchanges to ensure a perfect fit.

Love it or return it. We offer a transparent 30-Day Return & Exchange Policy for all standard, unaltered items in their original, unworn condition with our sustainable packaging intact

Every authentic piece is backed by our comprehensive Lifetime Warranty. We guarantee that your Stdiam moissanite will never cloud or lose its fire, and we cover all verified manufacturing defects in craftsmanship free of charge. Third-party alterations will void this warranty

It is Stdiam’s smarter approach to fine jewelry. We challenge overpriced diamond traditions by delivering conflict-free gems, 100% mining-free sustainability, and master-level bench craftsmanship without the luxury retail markups

No—and that is an intentional choice. Stdiam moissanite is ethically grown and engineered to exceed diamonds in fire and brilliance, giving you a flawless, pristine aesthetic without the environmental or financial compromise.

Every piece arrives in our newly upgraded signature Sustainable Walnut Wood Box, now featuring a luxurious forest green interior lining. It provides an elegant, organic, and ultra-premium unboxing experience that beautifully reflects our commitment to eco-luxury while protecting your investment forever.

Absolutely. Many customers choose Stdiam for personal milestones, travel rings, or meaningful gifts—because brilliance isn’t just for proposals.