Trust & Certification

The Intelligent Buyer’s Diamond Guide
Choosing the perfect piece of fine jewellery is a milestone moment. At Nandaz, we believe that luxury should be transparent, ethical, and tailored to your personal story. Whether you are captivated by the timeless allure of a Natural Diamond or the modern brilliance of a Lab-Grown Diamond, this guide will empower you to invest with absolute confidence.
Natural vs. Lab-Grown Diamonds: A Modern Choice
The single most important fact to know is this: Lab-grown diamonds are 100% real diamonds. They are optically, chemically, and physically identical to mined diamonds. The only difference is their origin.
Feature Natural Diamonds Lab-Grown Diamonds
Composition Pure Carbon Crystal Structure Pure Carbon Crystal Structure
Hardness 10/10 on Mohs Scale (Extremely Durable) 10/10 on Mohs Scale (Extremely Durable)
Brilliance & Fire Identical refractive index and sparkle Identical refractive index and sparkle
Origin Formed deep within the Earth over billions of years Cultivated under controlled technological replication
The Advantage Rarity, heirloom prestige, and enduring value retention Uncompromised premium size and clarity at an exceptional price point
Which is right for you?
  • Choose Natural if you value the romance of owning a rare, finite treasure forged by nature over billions of years—a true generational heirloom.
  • Choose Lab-Grown if you want to maximize your budget, allowing you to choose a significantly larger carat size or higher clarity rating with zero structural compromises.
The Ultimate Standard: The 4Cs of Diamond Quality
Every diamond we source at Nandaz is individually evaluated using the universal standard established by the world’s leading gemological authorities.
1. Cut (The Source of Sparkle)
The cut is the most critical factor of all. It determines how beautifully light reflects through the diamond's facets. Even a flawless diamond will look dull if poorly cut.
  • Our Standard: We prioritize Excellent to Ideal cuts to ensure your jewellery commands attention from across the room.
2. Clarity (The Pure Interior)
Diamonds formed under immense pressure often have tiny internal natural birthmarks called inclusions.
  • Our Standard: We hand-select "eye-clean" diamonds. This means that any microscopic inclusions are entirely invisible to the naked human eye, giving you flawless visual purity.
3. Colour (The Brilliant Brightness)
The white diamond colour scale ranges from D (completely colourless) to Z (noticeable yellow tint).
  • Our Standard: We source within the premium D to H range. These diamonds appear exceptionally bright, icy, and pure white when set in gold or platinum.
4. Carat (The Visual Presence)
Carat refers strictly to the diamond's weight, not its physical size. Because of this, an expertly cut diamond can actually appear visually larger than a heavier, poorly cut one.
Uncompromising Trust: World-Class Certifications
You never have to take our word for it. Every single natural diamond, lab-grown diamond, and moissanite stone featured at Nandaz is independently graded and laser-inscribed by the world’s premier gemological laboratories.
Your order arrives with an official, physical grading report from one of these trusted authorities:
  • GIA (Gemological Institute of America): The global gold standard for natural diamond grading. Renowned for the strictest, most conservative evaluation criteria in the world.
  • IGI (International Gemological Institute): The undisputed global pioneer and industry leader in certifying premium Lab-Grown Diamonds, ensuring exact precision in clarity and colour verification.
  • GRA (Gemological Research Association): The absolute leading authority specializing in the authentication and rigorous testing of premium Moissanite gemstones.
The Nandaz Guarantee
Every certified gemstone features a microscopic laser inscription on its girdle that matches its unique certificate registry number. This ensures your investment is verified, traceable, and fully protected for life.
Custom Made to Order: Your Vision, Handcrafted
Can't find the exact piece you are imagining? Our master jewellers specialize in bespoke design. We source your ideal certified stone—whether GIA Natural or IGI Lab-Grown—and handcraft your custom setting in solid gold or platinum.
Begin Your Bespoke Consultation Journey
NANDAZ
Crafted for Eternity