Natural Diamonds: A Complete Guide
Formed deep in the earth over billions of years. Here's what makes a natural diamond, and how to choose one well.
Quick answer
A natural diamond formed deep in the earth over billions of years under intense heat and pressure. Its quality and value are set by the 4Cs — cut, colour, clarity and carat. At Majestic, natural diamonds are independently graded by GIA or HRD.
How natural diamonds form
Natural diamonds crystallised from carbon roughly 150km below the surface, over one to three billion years, then were carried upward by ancient volcanic activity. Each is, in effect, unique — its tiny inclusions a fingerprint of how it grew. That rarity and origin story is a large part of a natural diamond's appeal.
The 4Cs decide quality
Every diamond is judged on cut (the biggest driver of sparkle), colour (how colourless, D-Z), clarity (freedom from inclusions) and carat (weight). Cut matters most — a well-cut stone outshines a larger, poorly cut one. Our 4Cs guide explains how to balance them for the best look on the hand.
Grading and choosing
Independent grading protects you: our natural diamonds come with a GIA or HRD report describing the stone objectively. If you're weighing natural against lab-grown, the choice comes down to origin, rarity and budget — both are real diamonds. Every stone is set in solid 9, 14 or 18ct gold, made to your size.
Choosing a natural diamond
Because every piece is made to order in your size and carat, you can keep the design you love and adjust the details to suit. Message our team on WhatsApp and we'll help you choose.
Frequently asked questions
How are natural diamonds formed?
They crystallised from carbon deep in the earth over one to three billion years under intense heat and pressure, then were carried toward the surface by ancient volcanic activity.
What makes one natural diamond better than another?
The 4Cs — cut, colour, clarity and carat. Cut has the biggest effect on beauty, so a well-cut diamond can outshine a larger stone that is cut poorly.
Are your natural diamonds certified?
Yes — independently graded by GIA or HRD. Lab-grown diamonds we supply are graded by IGI.
Natural or lab-grown — which should I choose?
Both are real diamonds. Natural offers rarity and origin; lab-grown offers more size or quality for the budget. It's a personal choice — we're happy to help you compare.