The Carbonstone Journal

Diamond Education

Diamond Education

Understand diamonds properly. Clear explanations of the 4Cs, diamond shapes, certification and how to get the most beauty for your budget.

Can a Diamond Change Colour?

Diamond colour is permanent, with one rare exception. What chameleon diamonds do, and the five far more likely reasons your ring looks different.

What Choosing a Marquise Diamond Says About Your Taste

Diamond shape reveals nothing about personality, but a marquise does say something about taste. The advantages, the real drawbacks, and which setting suits.

Are Oval Diamonds Too Trendy? Will an Oval Ring Look Dated Later?

Ovals are everywhere right now. The shape itself is decades old and ages well; it is the setting around it that dates a ring. How to buy one that lasts.

Are Coloured Diamonds Valuable?

Some coloured diamonds are worth millions, others cost less than a white stone. What decides which, and how to tell them apart.

What Is a Certified Lab-Grown Diamond?

An independent laboratory report is the most useful document in the whole purchase. What it covers and how to read it properly.

Where Do Lab-Grown Diamonds Come From?

Which countries grow and cut them, what traceability genuinely means, and the energy question answered without invented figures.

How Was the First Diamond Cut? A Short History of Diamond Cutting

Only diamond cuts diamond. How cutters got from uncut crystals to the modern round brilliant, and what antique cuts still offer.

Is a K Colour Diamond Too Yellow?

In white metal it shows its warmth. In yellow or rose gold it looks flawless. When a K colour diamond is the smartest buy on the scale.

The Bow Tie Effect in Oval and Pear Diamonds: What It Is and How to Avoid a Bad One

Every oval diamond has a bow tie shadow. What causes it, why no certificate grades it, and the practical way to avoid a severe one.

Do Lab-Grown Diamonds Have Fluorescence?

Yes, but far less often than mined diamonds and usually in a different colour. What the fluorescence line on your IGI certificate really means.

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