---
title: "Where to Buy Lab-Grown Diamonds: What to Check Before You Pay"
byline: "Love & Carat"
series: buying_guide
published: 2026-09-30T12:47:57.212Z
updated: 2026-09-30T12:47:57.212Z
canonical: https://loveandcaratnewyork.com/blog/where-to-buy-lab-grown-diamonds
disclosure: editorial
sources:
  - "Buying Gemstones, Diamonds, and Pearls | Consumer Advice - https://consumer.ftc.gov/articles/buying-gemstones-diamonds-and-pearls"
  - "Buying Platinum, Gold, and Silver Jewelry | Consumer Advice - https://consumer.ftc.gov/articles/buying-platinum-gold-and-silver-jewelry"
  - "Jewelry Guides | Federal Trade Commission - https://www.ftc.gov/news-events/topics/tools-consumers/jewelry-guides"
  - "eCFR :: 16 CFR Part 23 -- Guides for the Jewelry, Precious Metals, and Pewter Industries - https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23"
  - "PRO02-jewelry.pmd - https://www.govinfo.gov/content/pkg/GOVPUB-FT-PURL-LPS14787/pdf/GOVPUB-FT-PURL-LPS14787.pdf"
  - "GIA - Report Check - https://www.gia.edu/report-check"
  - "How can I be sure that a GIA grading report is authentic? - https://www.gia.edu/gia-faq-diamond-grading-report-authentic"
---

# Where to Buy Lab-Grown Diamonds: What to Check Before You Pay

_Written by Love & Carat about the stones we sell. Not an independent review._

**The short answer**

- The best place to buy a lab-grown diamond is a seller who gives you an independent grading report for the exact stone you are paying for, not a sample or a range.
- Ask to see real photographs or video of that stone, and check that any inscription the report notes matches the report.
- Get the return policy, the delivery terms and the full price in writing before you pay, and walk away if a seller won't put the details on paper.
- Once you trust the seller, spend on cut and let color and clarity drop to the point where your eye stops seeing a difference.

The best place to buy a lab-grown diamond is any seller who shows you the exact stone, gives you its independent grading report, and puts the price, the return policy and the delivery terms in writing. The name on the website matters far less than those checks. Here is how to run them on any seller, us included, before you pay.

## What makes a good place to buy lab-grown diamonds?

People often search for the best place to buy lab-grown diamonds as if there were one right answer. There isn't. Rather than trying to pick a seller by name, check how clearly each seller identifies the stone and explains the terms.

The FTC's basic advice applies to every jewelry store and online seller. It suggests that you [ask people you personally know for recommendations and not rely solely on what you see online or on social media](https://consumer.ftc.gov/articles/buying-platinum-gold-and-silver-jewelry). It also suggests searching the seller's name with the words "complaint" or "review". For online shopping in particular, the FTC's older buyer's guide adds that you should [look for an address to write to or a phone number to call](https://www.govinfo.gov/content/pkg/GOVPUB-FT-PURL-LPS14787/pdf/GOVPUB-FT-PURL-LPS14787.pdf) if you have a question or a problem.

A good seller of lab-grown diamonds online will pass every check below without you having to chase them:

- An independent grading report for the exact stone
- Real photographs or video of that stone, not a stock image
- A clear statement that the diamond is lab-grown, and of any treatment
- A written return policy
- Insured, signed-for delivery
- A full price, with any duty or tax spelled out

## Check the grading report for the exact stone

The grading report is the single most useful document in the sale. Check the report for the stone's stated shape, carat weight, color and clarity, and compare its cut grade if one is listed. Check how the report identifies the stone's origin, and make sure the seller states in writing whether the diamond is lab-grown or natural. For a plain explanation of what's on one, see our [certificate glossary entry](/education/certificate).

Three things to confirm:

1. **The report belongs to this stone.** A seller showing you "a typical report" or a grade range isn't showing you the stone you'll receive. Ask for the report tied to the diamond in your basket.
2. **The report is genuine.** According to GIA, its reports carry [security features such as a hologram, security screen and microprint lines](https://www.gia.edu/gia-faq-diamond-grading-report-authentic), and its Report Check service can confirm whether the details on a report match GIA's database. You can use [GIA's Report Check](https://www.gia.edu/report-check) yourself. For a GIA report, use GIA's Report Check; for another laboratory's report, ask that laboratory how to verify its details.
3. **The origin is clear.** The FTC notes that [the difference between natural and lab-created gems can be hard to detect](https://consumer.ftc.gov/articles/buying-gemstones-diamonds-and-pearls), so they should be clearly labeled. It suggests asking the seller about the diamond's origin and whether they use testing equipment to tell the two apart. It also warns that moissanite may look just like a mined diamond but is not the same.

A lab-grown diamond is diamond, not a lookalike. If you want the background, our guide to [whether lab-grown diamonds are real diamonds](/blog/are-lab-grown-diamonds-real-diamonds) covers what the FTC and the laboratories say.

**Never skip the report:** A missing report is not a discount, it's a gap. Buy a certified stone, even if it means a smaller or lower-color one, so you know exactly what you're paying for.

## Photos, video and the inscription

A grading report tells you the grades. Photos and video tell you how the stone actually looks, which matters most for cut. Stones with matching grades may still look different to your eye.

Ask for images of the specific diamond: face-up, ideally on video, so you can see how it handles light as it moves. Stock images and computer renderings are fine for choosing a shape, but not for choosing a stone.

Watch the scale, too. The FTC's Jewelry Guides say that [an illustration or depiction of a diamond that portrays it in greater than its actual size may mislead consumers](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23) unless the true size is disclosed. The FTC [approved its final revisions to the Jewelry Guides on July 24, 2018](https://www.ftc.gov/news-events/topics/tools-consumers/jewelry-guides), and the eCFR page carries the text as it currently stands. Ask for the stone's millimeter measurements, compare them with the report if listed, and use a size reference to picture it on a hand.

If the report notes a laser inscription, it may help identify the stone; the girdle is its thin outer edge. If yours does, ask the seller to show it to you in a close-up photo. If the report lists an inscription, ask a jeweler to check it against the report using suitable magnification. It's a simple way to tie the paper to the stone.

## Price, return policy and delivery in writing

### Weight and price

Prices should be quoted against the exact stone, with the weight stated clearly. The FTC's Jewelry Guides (revised July 24, 2018) say that a weight given in "points" should [also be stated as decimal parts of a carat](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23), and that a weight stated to two decimal places should be accurate to the last place. If the listing's weight differs from the report, ask the seller to resolve the discrepancy and confirm that the report belongs to the stone before you pay.

As reflected in the [FTC's Jewelry Guides](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23), retrieved September 30, 2026, treatments that meet the guides' disclosure criteria should be disclosed in the listing when a product can be bought without seeing it in person. Check the listing for any required treatment disclosures, and ask the seller about treatments before buying. The FTC also suggests you [ask if a gemstone has been treated](https://consumer.ftc.gov/articles/buying-gemstones-diamonds-and-pearls).

### Returns

The FTC suggests you [find the store's refund and return policies and get them in writing](https://consumer.ftc.gov/articles/buying-platinum-gold-and-silver-jewelry), so that if something goes wrong you'll know what to do. Read the policy before you order, not after. Ours is published at [/policies/returns](/policies/returns).

### Delivery and duty

A diamond should travel insured and signed for. Check who carries the risk until it's in your hands. Ours ship that way; the details are at [/policies/shipping](/policies/shipping). If a stone crosses a border, duty or tax may be due. We pay the import duty on orders to the US; elsewhere, duties or taxes may be collected on delivery when a stone crosses a border. For what applies to your own order, check your country's customs authority.

The FTC's advice on paperwork sums up this whole section:

> If the seller doesn’t include these details in writing, consider working with someone else.
> (Buying Gemstones, Diamonds, and Pearls | Consumer Advice)

## What to prioritize once you trust the seller

Once the seller passes the checks, the question becomes which stone. This is where you don't have to break the bank. Lab-grown diamonds usually cost less than comparable natural ones; within lab-grown diamonds, compare stones in your preferred setting before paying for color or clarity differences you cannot see.

**Put the money into the cut, and let color and clarity drop until you can't see the difference.**

- **Cut first.** It has a major effect on how bright and lively the stone looks. See our [cut glossary entry](/education/cut).
- **Color second.** On GIA's scale, [color is rated from D to Z, with D at the top](https://consumer.ftc.gov/articles/buying-gemstones-diamonds-and-pearls). Compare near-colorless stones in your preferred setting; if you cannot see a difference, we recommend skipping the higher color grade.
- **Clarity last.** GIA's [clarity scale runs from flawless to I3](https://consumer.ftc.gov/articles/buying-gemstones-diamonds-and-pearls); the FTC says “flawless” means no visible surface or internal imperfections under 10-power magnification when viewed by a skilled diamond grader. You're looking at the ring from arm's length, not through a loupe. An eye-clean stone is the goal, not a flawless one.

### Budget bands, in words

- **Tighter budget:** compare well-cut stones just below a round-number weight, such as just under a carat, with near-colorless color and eye-clean clarity. If a slightly lighter stone looks the same to you and costs less, choose it.
- **Middle budget:** keep the same priorities at a larger size, or compare the face-up millimeter measurements of different shapes, including ovals and pears.
- **Generous budget:** compare larger, well-cut stones before paying for top color or clarity; spend more on those grades only if you can see a difference you value.

For size, think in millimeters and finger width rather than carats alone. Browse shapes on our [center stones page](/), and compare their measurements and appearance.

## Questions to ask before you pay

Send these to any seller, and keep the answers:

1. Is this the grading report for the exact stone I'm buying?
2. Can you send photos or video of this stone, and of its inscription if the report notes one?
3. Is the diamond lab-grown or natural, and has it been treated?
4. What are the measurements in millimeters?
5. Is the price final, and does it include delivery, insurance and any duty?
6. What is your return policy, in writing?
7. How do I reach you if there's a problem?

**Compare reports, not adjectives:** Words like "stunning" or "top quality" can't be checked. Grades, weight and measurements on an independent report can, so line those up when comparing sellers.

## If something goes wrong

Start with the seller: the FTC advises trying to [resolve a problem with the seller first](https://consumer.ftc.gov/articles/buying-platinum-gold-and-silver-jewelry). If that doesn't work, the FTC says you can report it at ReportFraud.ftc.gov or to your state attorney general. It also points to the Jewelers Vigilance Committee, which operates a mediation program for people who have disputes with jewelers.

One last point, because it comes up: don't buy any diamond, lab-grown or natural, expecting to sell it later at a profit. Diamonds are not investments. Choose a stone you'll love wearing, from a seller who shows you everything before you pay.

## Frequently asked questions

**Which company has the best lab-grown diamonds?**

There is no single best seller for everyone. Ask for the exact stone's report and images and the terms in writing; compare the stones' appearance as well as their reports and prices.

**What is a reasonable price for a lab-grown diamond?**

Compare prices for specific stones with similar report details and images. If one costs less, check its appearance, measurements, grading report and written terms before choosing; we cannot determine a stone's fair value for you.

**Is it safe to buy lab-grown diamonds online?**

It can be, if the seller lists a way to reach them, shows the stone and its report before you pay, and publishes its return and delivery terms. The FTC's older buying guide also suggests doing some homework to confirm a company is legitimate before doing business with it.

**Will a lab-grown diamond hold its value?**

Buy it because you love it, not as a store of value. Diamonds are not investments, lab-grown or natural, and no honest seller should promise you a resale price.