FAQ

Our Diamonds

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — the only difference is origin. Ours are grown above ground, then cut, certified, and handset in our NYC studio.

Are your diamonds certified?

Yes. Our diamonds are certified by IGI (International Gemological Institute) and laser-inscribed with their certificate number. Your jewelry ships with its matching IGI certificate.

What metals do you offer?

14K and 18K gold (white, yellow, rose) and platinum, depending on the piece.

Shipping & Returns

Is shipping free?

Yes — free, fully insured shipping within the US, with signature required on delivery.

What is your return policy?

You have 30 days from delivery to return your purchase for a full refund to your original payment method — no restocking fees. We provide an insured FedEx return label; the label cost is deducted from your refund. Items must be unworn, with original packaging and the matching IGI certificate. See our Return Policy.

Sizing & Care

What ring sizes do you offer?

Sizes 4–9, including quarter sizes. Not sure of your size? Contact us and we'll help.

Do you offer resizing?

Yes — resizing is available through our NYC studio. Contact us for details.

Payment

What payment methods do you accept?

All major cards, Apple Pay, and Shop Pay. Financing is available through Klarna — split your purchase into installments at checkout.

Visit Us

Can I see a piece in person?

Yes — schedule a private viewing at our showroom: 20 West 47th Street, Suite 801, in NYC's Diamond District. Call or text 917-532-0969 or email zack@zackandelle.com.