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.

What Is the Best Girdle Thickness for a Round Diamond?

Thin to slightly thick is the answer, and here is why. What the girdle does, why the extremes cause problems, and how much this really matters.

Why Choose a Pear Cut Diamond? Meaning, Symbolism and Who It Suits

The pear is the shape with the strongest symbolism attached to it. Where that comes from, what the cut does well and badly, and how to choose one.

Are Pink Diamonds an “Off Colour” Diamond?

No. Off colour describes a white diamond with unwanted tint. Pink is graded in a different system where colour is the whole point. Both explained.

Which Country Is Famous for Diamond Cutting?

India, and Surat in particular, cuts more diamonds than anywhere else. Where Antwerp, Israel and Amsterdam fit, and why cut quality matters more.

Do Lab-Grown Diamonds Have Serial Numbers?

Yes, a laser-inscribed report number on the girdle. How to find it, how to check it against the laboratory database, and what it does not prove.

Who Invented the Princess Cut? The Real, Slightly Tangled Story

The princess cut is credited to three Israeli cutters around 1980, but earlier designs fed into it. The history, the trade-offs, and the shapes we do stock.

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.

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