Natural diamonds: the complete guide

What makes a diamond natural?

A diamond is natural when it formed in the earth rather than in a laboratory. Carbon crystallised under intense heat and pressure in the mantle, then reached the surface through deep volcanic eruptions.

No two natural diamonds share the same history, which is why each one has its own pattern of inclusions and growth.

Natural or lab-grown: which should you choose?

Neither is better. It comes down to what matters most to you.

Natural diamonds are valued for their rarity and origin. Lab-grown diamonds have the same properties and sit at a lower price, because they can be grown predictably and quickly.

Both vary in quality and light performance, so it’s important not to buy on a grading report alone.

How are natural diamonds graded?

Laboratories grade natural diamonds on cut, colour, clarity and carat, and state the origin on the report. GIA is long established as a reference for natural diamonds.

How much does a natural diamond cost?

Price depends on carat, cut, colour, clarity, shape and availability. At CTJ, natural diamond studs start from $2,900 a pair (1.00ct TDW) and engagement ring settings from $2,200, with the diamond priced separately.

How do you choose a natural diamond?

Start with cut, then choose colour and clarity you can’t see past, then carat to suit your hand and budget. Most importantly, compare real diamonds side by side.

Where can you see natural diamonds on the Gold Coast?

CTJ Jewellery’s showroom at 37 Upton Street, Bundall holds in-stock natural diamonds you can view, compare and buy. Walk in during showroom hours or book a time.