The Lab-Grown Diamond Buyer's Guide
Every diamond we sell is GCAL 8X, D–F color and VVS2 or better. These guides explain what that means, what it costs, and how to buy and set a loose stone.
Cut & certification
What GCAL 8X, Hearts & Arrows and the 4Cs mean, and how to read a certificate.
What Is GCAL 8X Certification?The eight cut criteria behind GCAL 8X, how to read the certificate, the laser inscription and GCAL's guarantee.Read the guide →
Hearts & Arrows and Super Ideal Cut, ExplainedWhat the hearts & arrows pattern proves, what it doesn't, and what super ideal means.Read the guide →
GCAL vs. IGI vs. GIA: Which Diamond Report Matters?What each lab's lab-grown report actually includes, GIA's 2025 change, and how to pick.Read the guide →
The 4Cs for Lab-Grown DiamondsWhat cut, color, clarity and carat mean, and why our catalog stops at GCAL 8X, D–F and VVS2 or better.Read the guide →
Lab-Grown Diamond Shapes: The 7 We Stock in GCAL 8XThe seven shapes we stock in GCAL 8X: how each looks, its face-up size and what to check.Read the guide →
Fire, Brilliance and Scintillation: Why Cut Matters MostWhat fire, brilliance and scintillation are, and why the cut controls all three.Read the guide →
Pricing & buying
What each size costs today, and how to buy a loose stone and have it set or upgrade a ring you own.
Lab-Grown Diamond Prices by CaratReal prices by carat band from Arelia's live catalog, and what moves the price within a size.Read the guide →
How to Upgrade Your Engagement Ring Diamond (and Keep Your Band)Reset a bigger stone in the band you love: sizes, measurements and what your jeweler needs.Read the guide →
How to Buy a Loose Diamond Online and Have It Set LocallyStep by step: judge the stone online, verify it on arrival, then hand it to a jeweler you trust.Read the guide →
Lab-grown basics
What a lab-grown diamond is, how it's identified, and what to know about resale.
Questions? See the diamond FAQ.
Every diamond in our catalog is GCAL 8X graded, with its certificate one click away.
Browse lab-grown diamondsFrequently asked questions
Where should I start?
Read What Is GCAL 8X Certification to see what our cut standard means, then Lab-Grown Diamond Prices by Carat for what each size costs today.
What matters most when choosing one of your diamonds?
Cut matters most, because it decides how bright, fiery and sparkly a diamond looks. That's why every stone we sell is GCAL 8X, Excellent in all eight cut factors, as well as D–F color and VVS2 or better. With those fixed, the choices left to you are size and shape.