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Round|Lab Grown|IGI

1.51ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG816610502

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816610502

Diamond specifications and retailer prices

From $525 USD
As of November 4, 2026
Save $2,915 USD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,440 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816610502 or 816610502. Listed at 23 retailers as of November 4, 2026, with prices from $525 to $3,440, a $2,915 spread on the same certified stone. Brilliant Earth lists it at $3,440. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816610502
Dimensions7.51 × 7.45 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.51 mm7.45 mm1.51 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816610502
Side View
Table 56.0%Crown 32.8°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,440 USD|Low: $517 USD|High: $3,990 USD|Avg: $1,505 USD|-13.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 4, 2026
Retailer 6$525 USD
Retailer 12$725 USD
Retailer 3$818 USD
Retailer 16$888 USD
Retailer 5$913 USD
Retailer 11$952 USD
Retailer 13$1,002 USD
Retailer 15$1,337 USD
Retailer 7$1,352 USD
Retailer 2$1,635 USD
Retailer 8$1,841 USD
Retailer 9$1,955 USD
Retailer 10$2,044 USD
Retailer 4$2,051 USD
Retailer 14$2,136 USD
Brilliant Earth$3,440 USD

36 data points across 16 retailers

23 retailers$525 USD to $3,440 USD

Retailer 1
-
$462 USD
Price last confirmed 43 days ago
Retailer 2
-
$462 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$517 USD
View
Price last confirmed 43 days ago
A
Retailer 4
-
$525 USD
View
Final sale: no returns
Retailer 5
-
$565 USD
View
Price last confirmed 41 days ago
Retailer 6
-
$573 USD
View
Price last confirmed 33 days ago
Retailer 7
-
$573 USD
View
Price last confirmed 23 days ago
A
Retailer 8
-
$725 USD
View
A
Retailer 9
-
$818 USD
View
B+
Retailer 10
-
$888 USD
View
B+
Retailer 11
-
$913 USD
View
B+
Retailer 12
-
$952 USD
View
B+
Retailer 13
-
$1,002 USD
View
B+
Retailer 14
-
$1,337 USD
View
B
Retailer 15
-
$1,352 USD
View
B+
Retailer 16
-
$1,635 USD
View
Retailer 17
-
$1,841 USD
View
Price last confirmed 28 days ago
Retailer 18
-
$1,841 USD
View
Price last confirmed 44 days ago
B
Retailer 19
-
$1,955 USD
View
B
Retailer 20
-
$2,044 USD
View
B
Retailer 21
-
$2,051 USD
View
B
Retailer 22
-
$2,136 USD
View
Most Expensive
B
Brilliant Earth
21019166A · Nov 4
$3,440 USD
View
22 more retailers have this diamond
Prices start from $525 USDSave up to $2,915 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$525 USD