Discover the Beauty Behind Every Stone
Diamonds have captivated the world for centuries — symbols of love, legacy, and timeless elegance.
Understanding the basics helps you choose a diamond with clarity and confidence.
At Harmony Diamonds, we go beyond the standard. Our education experience empowers you to appreciate the artistry, rarity, and science behind every stone.
The 4Cs: What Defines a Diamond’s Value
1. Cut — The Heart of a Diamond’s Sparkle
The cut determines how brilliantly a diamond reflects light.
Among all the 4Cs, Cut is the most important because it directly influences brilliance, fire, and sparkle.
The round brilliant cut — the world’s most popular shape — typically features 57 facets, perfectly angled to maximise light return.
A well-cut diamond will look brighter, livelier, and more beautiful, regardless of its size or colour grade.
What to Look For
| Triple Excellent (EX/EX/EX) grading from GIA (Cut, Polish, Symmetry — all rated Excellent)Smooth, mirror-like facets Perfectly aligned symmetry that creates the Hearts & Arrows patternAt Harmony Diamonds, only Triple Excellent centre stones meet our internal standards — ensuring the finest sparkle in every piece. |
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Carat measures the weight of a diamond, not its face-up size. Larger diamonds are much rarer, which is why price increases exponentially as carat weight goes up.
A size chart helps show the relationship between carat weight and millimetre diameter.
Buying Guidance
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Avoid diamonds cut too “deep” or too “shallow” — they hide weight but lose brilliance. Popular carat ranges: Rings: 0.50–3.00ct Earrings: 0.30–2.00ct Pendants: 1.00ct+ Diamonds priced just under full-carat marks (e.g., 0.99ct) offer excellent value. If size is a priority, you may balance colour or clarity — but never sacrifice Cut. Need help finding the ideal size for your design? Our experts are here to guide you. |
3. Clarity — Nature’s Fingerprint
Clarity refers to natural features inside or on the surface of a diamond. These may be tiny crystals, feathers, or marks — most of which are invisible
without magnification.
Harmony Diamonds focuses on high-quality clarity grades to ensure beauty and durability.
Clarity Grades You Should Know
Buying Guidance
Choose an eye-clean diamond — one with no visible imperfections to the naked eye.
Our gemmologists will guide you through selecting a clarity grade that suits your expectations and budget.
4. Colour — The Shade That Defines Style
White diamonds are graded on the absence of colour, from D (colourless) to Z (light yellow/brown).
The less colour a diamond has, the rarer and more valuable it is.
Color Scale Chart
Buying Guidance
Your ideal colour depends on design preference:
Colour is ultimately a personal choice — choose what feels beautiful to you.
Why Learn with Harmony Diamonds?
Access to 130,000+ certified diamonds
Only Triple Excellent cuts recommended for centre stones
Ethical, conflict-free sourcing
Personalised guidance from trained gemmologists
A seamless, confidence-driven buying experience
Whether you’re choosing your first diamond or expanding your collection, we’re here to help you discover a stone that feels truly meaningful.