0.3 Carat Lab Grown Diamond Prices Comparison
As of February 2026, the average price of a 0.3 carat lab grown diamond is $205.0.3 carat diamonds can cost anywhere from $108 to $1,778 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 0.7%.Compare 14,495 verified listings across 4 retailers in the tables below.
0.3 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 14,495 verified 0.3-carat lab grown diamonds listed across 4 online retailers. Prices in this segment range from $108 to $1,778, with an average asking price of $205 and a median of $176.
The price spread of $1,670 (93.9% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
14,495 diamonds tracked in this segment
Price range: $108 to $1,778
Average price: $205
Median price: $176
Available across 4 retailers
Savings potential: up to 93.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
14,495
$108
$205
$176
$1,778
Price History
Price Comparison Matrix
0.3 Carat Lab Grown Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 64.3%0.25ct | Asscher | E | VVS2 | Very Good
From $134
Compare at $376
IGISave 64.8%0.25ct | Asscher | E | VS1 | Very Good
From $130
Compare at $370
IGISave 64.3%0.25ct | Asscher | D | VVS2 | Very Good
From $134
Compare at $376
IGISave 63.5%0.25ct | Asscher | D | VVS1 | Very Good
From $141
Compare at $387
IGISave 64.3%0.25ct | Asscher | D | VVS2 | Very Good
From $134
Compare at $376
IGISave 63.5%0.25ct | Asscher | D | VVS1 | Very Good
From $141
Compare at $387
IGISave 63.5%0.25ct | Asscher | D | VVS1 | Very Good
From $141
Compare at $387
IGISave 63.5%0.25ct | Asscher | D | VVS1 | Very Good
From $141
Compare at $387
IGISave 64.8%0.25ct | Asscher | D | VS1 | Very Good
From $130
Compare at $370
IGISave 63.6%0.26ct | Asscher | E | VVS2 | Very Good
From $140
Compare at $384
IGISave 60.2%0.26ct | Asscher | D | VS1 | Good
From $173
Compare at $434
IGISave 62.3%0.26ct | Asscher | D | VVS2 | Ideal
From $174
Compare at $461
IGISave 62.3%0.26ct | Asscher | D | VVS2 | Very Good
From $174
Compare at $461
IGISave 61.7%0.27ct | Asscher | D | VVS2 | Good
From $181
Compare at $471
IGISave 59.5%0.27ct | Asscher | E | VVS2 | Good
From $179
Compare at $443
IGISave 62.3%0.27ct | Asscher | D | VS2 | Very Good
From $152
Compare at $404
IGISave 60%0.27ct | Asscher | E | VS1 | Very Good
From $175
Compare at $437
IGISave 61.7%0.27ct | Asscher | D | VVS2 | Very Good
From $181
Compare at $471
IGISave 62.7%0.28ct | Asscher | D | VS1 | Very Good
From $169
Compare at $453
IGISave 58.5%0.28ct | Asscher | D | VVS2 | Ideal
From $187
Compare at $451
IGISave 58.5%0.28ct | Asscher | D | VVS2 | Good
From $187
Compare at $451
IGISave 62.2%0.28ct | Asscher | F | VS2 | Good
From $153
Compare at $405
IGISave 62.7%0.28ct | Asscher | D | VS1 | Very Good
From $169
Compare at $453
IGISave 62.2%0.29ct | Asscher | D | VS1 | Good
From $175
Compare at $462
IGISave 62.2%0.29ct | Asscher | D | VS1 | Good
From $175
Compare at $462
IGISave 58.2%0.29ct | Asscher | D | VVS2 | Fair
From $194
Compare at $463
IGISave 62.2%0.29ct | Asscher | E | VVS2 | Very Good
From $175
Compare at $462
IGISave 58.2%0.29ct | Asscher | D | VVS2 | Good
From $194
Compare at $463
IGISave 62.2%0.29ct | Asscher | D | VS1 | Good
From $175
Compare at $462
IGISave 62.2%0.29ct | Asscher | E | VVS2 | Very Good
From $175
Compare at $462
IGISave 58.2%0.29ct | Asscher | D | VVS2 | Very Good
From $194
Compare at $463
IGISave 62.5%0.29ct | Asscher | E | VS1 | Good
From $170
Compare at $455
IGISave 62.2%0.29ct | Asscher | D | VS1 | Very Good
From $175
Compare at $462
IGISave 62.4%0.29ct | Asscher | E | VS1 | Very Good
From $151
Compare at $401
IGISave 58.2%0.29ct | Asscher | D | VVS2 | Good
From $194
Compare at $463
IGISave 62.2%0.29ct | Asscher | E | VVS2 | Very Good
From $175
Compare at $462
IGISave 62.2%0.29ct | Asscher | D | VS1 | Good
From $175
Compare at $462
IGISave 62.2%0.29ct | Asscher | D | VS1 | Good
From $175
Compare at $462
IGISave 41.1%0.3ct | Asscher | D | VVS2 | Fair
From $200
Compare at $340
IGISave 41.1%0.3ct | Asscher | D | VVS2 | Good
From $200
Compare at $340
IGISave 60.5%0.3ct | Asscher | D | VS2 | Good
From $169
Compare at $428
IGISave 41.1%0.3ct | Asscher | D | VVS2 | Good
From $200
Compare at $340
IGISave 62.1%0.3ct | Asscher | E | VS1 | Very Good
From $176
Compare at $465
IGISave 61.6%0.3ct | Asscher | D | VS1 | Very Good
From $181
Compare at $471
IGISave 62.1%0.3ct | Asscher | E | VS1 | Fair
From $176
Compare at $465
IGISave 41%0.3ct | Asscher | D | VVS1 | Ideal
From $221
Compare at $375
IGISave 40.8%0.3ct | Asscher | E | IF | Ideal
From $229
Compare at $387
IGISave 62.7%0.3ct | Asscher | F | VS1 | Good
From $169
Compare at $452
IGISave 60.5%0.3ct | Asscher | D | VS2 | Very Good
From $169
Compare at $428
IGISave 41.1%0.3ct | Asscher | D | VVS2 | Good
From $200
Compare at $340
Entry pricing in this category starts around $108.
What to Know When Shopping for 0.3 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,670 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $176 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
Frequently Asked Questions
We currently track 14,495 comparable stones in this segment. Prices start around $108 and go up to $1,778.
Based on the latest market data, the average asking price is about $205 with a median around $176.
The observed spread is roughly $1,670 across tracked listings, which is about 93.9% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $176, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 4 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $1,670 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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