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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: 102 stories
Mapple Gems
Featured story

Melee: What You Are Actually Buying in a PavΓ© Band

Melee is never individually graded in any material. The parcel specification to ask for, why mixed-material accents need disclosing, and why the...

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Oval Diamond Length-to-Width Ratio: How to Choose Yours

The length-to-width ratio decides whether an oval reads long and elegant or round and full. It is never printed on the report,...

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The Bow-Tie in an Oval Diamond: What It Is and How to Judge It

Every oval diamond has a bow-tie. It appears on no grading report and in no still photograph. Here is what causes it,...

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Certified vs Uncertified Lab Grown Diamonds

When an independent report is worth insisting on, why the small stones in a halo are never certified by anyone, and the...

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What Happened to GIA Lab Grown Diamond Grading in 2025?

In October 2025 GIA replaced letter grades for lab grown diamonds with a Premium or Standard assessment. What that means for a...

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Round Brilliant Lab Grown Diamond Rings: What to Check Before You Buy

Round is the only shape an independent lab will grade for cut. Here are the five checks that matter, in order β€”...

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Buying Guide

Oval Cut Lab Grown Diamond Engagement Rings: The Complete Buying Guide

Oval is now one of the two most-chosen engagement ring shapes, and lab-grown is the majority stone. This guide covers face-up spread,...

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2026 trends

Best Lab-Grown Diamond Shapes for Value in 2026

Elongated shapes like oval, pear, and marquise look larger per carat and cost less. Here are the best lab-grown diamond shapes for...

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1 carat

How Much Does a 1-Carat Lab-Grown Diamond Cost in 2026?

A 1-carat lab-grown diamond costs around $700–$1,500 in 2026. Here's the full price breakdown by quality, plus what a full ring costs.

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2026 trends

Is the Lab-Grown Diamond Bubble Bursting? What 2026's Price Drop Means for Buyers

Lab-grown diamond prices fell nearly 28% in the past year. Here's what's driving the 2026 price drop and what it means if...

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