NITZI

Celebrity-quality diamonds.
Insider prices.

Frequently Asked Questions

Everything you need to know about shopping with Nitzi.

About Lab-Grown Diamonds

Lab-grown diamonds are real diamonds — chemically, physically, and optically identical to mined diamonds. The only difference is their origin: they're created in a controlled laboratory environment using advanced technology that replicates the natural diamond-growing process.

The only difference is origin. Lab-grown diamonds are created in weeks rather than millions of years, making them more sustainable and significantly more affordable. Even expert gemologists cannot tell them apart without specialized equipment.

Yes — every diamond we sell comes with an IGI or GIA certificate. These certificates independently verify the diamond's cut, color, clarity, and carat weight.

Our lab-grown diamonds are typically 50–70% below traditional retail prices for comparable quality. We work directly with growers and cut out the middlemen.

Ordering

Absolutely! Custom orders are our specialty. Choose your diamond, select a setting, and we'll bring your vision to life. We offer complimentary consultations and custom orders typically take 2–4 weeks.

Start your custom order →

We have a comprehensive ring sizing guide with two measurement methods and a full size chart. If you're between sizes, go up — and we offer free resizing within 30 days.

View Size Guide →

We accept all major credit cards (Visa, Mastercard, American Express) through our secure Stripe-powered checkout. Your card details never touch our servers.

We're working on adding financing options. In the meantime, contact us to discuss payment arrangements for larger purchases.

Shipping & Returns

Yes! We ship to both countries. All shipments are fully insured and require a signature. Free shipping on all orders.

Orders are processed within 1–3 business days. Standard delivery is 3–7 business days in Canada and 5–10 to the US. Custom orders take 2–4 weeks before shipping.

We offer a 30-day return policy on non-custom items in original, unworn condition. Custom and bespoke orders are final sale. Refunds are processed within 5–10 business days.

Full policy details →

Appraisals & Certificates

Every diamond comes with an independent IGI or GIA grading certificate. Bespoke pieces also include a complimentary professional appraisal documenting the replacement value.

A professional appraisal serves as proof of value for insurance purposes, resale, and your own peace of mind. It's an independent document confirming exactly what you own and what it's worth.

Still have questions?

We're here to help. Reach out and we'll get back to you within 24 hours.

Contact Us