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Mapple Gems Journal

Lab Grown Diamonds

Guides, stories, and answers about lab-grown diamonds, moissanite, and fine jewellery β€” written by our atelier.

Currently reading: 155 stories
Buying a Matched Pair
Featured story

Buying a Matched Pair

The hardest matching problem in jewellery, because both objects are worn at the same height, on the same person, at the same...

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Buying a Large Lab Grown Diamond: What Changes Above 3 Carats

Buying a Large Lab Grown Diamond: What Changes Above 3 Carats

Everything invisible at 1 carat becomes visible at 3. What to adjust on clarity, colour and cut β€” and why most large-stone...

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Why Cut Quality Matters More in Lab Grown Than People Expect

Why Cut Quality Matters More in Lab Grown Than People Expect

Lab grown production clusters at high colour and clarity, so cut is the only C still separating stones β€” and it's the...

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Cushion Cuts in Yellow Gold: How Far Down the Colour Scale You Can Go

Cushion Cuts in Yellow Gold: How Far Down the Colour Scale You Can Go

A crushed ice cushion in yellow gold is the most colour-forgiving combination in jewellery. Paying for a G in that setting is...

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Cushion vs Radiant Cut: Soft Corners or Sharp Ones

Cushion vs Radiant Cut: Soft Corners or Sharp Ones

Two brilliant-faceted, roughly square shapes that people mix up constantly. The corners are the real difference, and they decide durability, wedding band...

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Cushion Cut Ratio: Square, Soft Square or Elongated

Cushion Cut Ratio: Square, Soft Square or Elongated

Cushion covers a wider range of outlines than any other named shape. 1.00 and 1.25 are both sold as cushions and are...

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Crushed Ice or Chunky: How to Tell Before You Buy

Crushed Ice or Chunky: How to Tell Before You Buy

The single biggest difference between two cushion cuts appears on no certificate and in no listing. How to identify it from a...

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Do Lab Grown Diamonds Have Inclusions?

Do Lab Grown Diamonds Have Inclusions?

They are crystals, so yes. How HPHT and CVD inclusions differ in character, why where an inclusion sits matters more than the...

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Tennis Bracelet Stone Size: Total Carat Weight Tells You Almost Nothing

Tennis Bracelet Stone Size: Total Carat Weight Tells You Almost Nothing

Total carat weight is divided across a stone count nobody publishes. The mm-per-stone chart, why length changes everything, and the three numbers...

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Do Lab Grown Diamonds Fluoresce?

Do Lab Grown Diamonds Fluoresce?

Some do, and it is neither a fault nor a feature. What causes it, why HPHT shows it more than CVD, and...

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