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Lab Grown Round Brilliant Diamonds
The round brilliant is the most engineered shape in jewellery. Its 57 or 58 facets are cut to angles worked out to return as much light through the table as the material allows, which is why it out-sparkles every other outline and why it accounts for the majority of engagement rings sold.
Use the filters above to narrow this lab grown round brilliant inventory by carat, colour, clarity and cut. Prices move with live supply, so the stone you are looking at is the stone available today, and every one is sold loose with its grading report.
Choosing a round brilliant diamond
Cut grade does more here than on any other shape, because the round is the only shape a laboratory assigns a full cut grade to. Buy Excellent or Very Good and treat colour and clarity as the place to save. Round also costs more per carat than any fancy shape, because more of the original rough is lost getting to it.
Lab grown or natural round brilliant?
Every stone on this page is lab grown. If you want to price the same round brilliant stone as a mined diamond, the same carat, colour, clarity and cut is listed in our natural round brilliant diamonds, and the difference between the two is the clearest way to decide which you actually want. Both are real diamonds; the lab grown stone simply lets the same budget go further on size.
Other shapes and the full range
If you are still deciding on outline, compare this against lab grown oval diamonds, lab grown cushion cut diamonds, lab grown princess cut diamonds. The whole lab grown diamond inventory lists every shape side by side with the same filters. To see natural and lab grown stones together along with the current specials, go to our full loose diamond range.
Frequently asked questions
What should I look for in a round brilliant diamond?
Cut grade does more here than on any other shape, because the round is the only shape a laboratory assigns a full cut grade to. Buy Excellent or Very Good and treat colour and clarity as the place to save. Round also costs more per carat than any fancy shape, because more of the original rough is lost getting to it.
Are lab grown round brilliant diamonds real diamonds?
Yes. A lab grown diamond is the same carbon crystal as a mined one, with the same hardness and the same optical properties, and the two cannot be told apart by eye. Every stone here carries an independent grading report that names it as laboratory grown and a laser inscription on the girdle matching that report.
Can I have a round brilliant diamond set into a ring?
Yes. Every lab grown round brilliant diamond here is sold loose, so you choose the stone first and the setting second. Diamond Story sets loose stones into engagement rings, pendants and earrings in our Melbourne workshop, and we will advise on the setting that suits the shape you have chosen.
Want to see it in person?
Book a time in our Melbourne showroom to view your round brilliant shortlist, or send us the specification you are after and we will source it.
Talk to our diamond team