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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG803629717

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803629717

Diamond specifications and retailer prices

From $657 USD
As of October 29, 2026
Save $3,073 USD (82%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,730 USD at Brilliant Earth · As of October 31, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG803629717 or 803629717. Listed at 24 retailers as of October 29, 2026, with prices from $657 to $3,730, a $3,073 spread on the same certified stone. Brilliant Earth lists it at $3,730. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803629717
Dimensions7.42 × 7.38 × 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
7.42 mm7.38 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803629717
Side View
Table 58.0%Crown 33.8°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.7%

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: Oct 29
Current: $3,730 USD|Low: $631 USD|High: $4,860 USD|Avg: $1,662 USD|-23.3%
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
Retailer 17
November 1, 2026
Retailer 17$657 USD
Retailer 16$715 USD
Retailer 4$762 USD
Retailer 5$762 USD
Retailer 11$1,046 USD
Retailer 13$1,080 USD
Retailer 8$1,090 USD
Retailer 15$1,175 USD
Retailer 2$1,215 USD
Retailer 10$1,296 USD
Retailer 14$1,388 USD
Retailer 6$1,770 USD
Retailer 3$2,143 USD
Retailer 9$2,455 USD
Retailer 7$2,625 USD
Retailer 12$3,228 USD
Brilliant Earth$3,730 USD

33 data points across 17 retailers

24 retailers$657 USD to $3,730 USD

A
Cheapest Retailer
-
$657 USD
A
Retailer 2
-
$715 USD
View
A
Retailer 3
-
$735 USD
View
Final sale: no returns
A
Retailer 4
-
$762 USD
View
Retailer 5
-
$762 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$1,005 USD
View
A
Retailer 7
-
$1,046 USD
£824 GBP
View
B+
Retailer 8
-
$1,076 USD
View
B+
Retailer 9
-
$1,080 USD
View
B+
Retailer 10
-
$1,090 USD
View
B+
Retailer 11
-
$1,175 USD
A$1,808 AUD
View
B+
Retailer 12
-
$1,215 USD
£956 GBP
View
B+
Retailer 13
-
$1,296 USD
€1,234 EUR
View
Retailer 14
-
$1,388 USD
ZAR 22,422 ZAR
View
Price last confirmed 8 days ago
B
Retailer 15
-
$1,770 USD
View
B
Retailer 16
-
$2,143 USD
View
B
Retailer 17
-
$2,455 USD
View
B
Retailer 18
-
$2,565 USD
SGD 3,466 SGD
View
B
Retailer 19
-
$2,600 USD
View
Retailer 20
-
$2,625 USD
View
Price last confirmed 18 days ago
B
Retailer 21
-
$2,630 USD
View
B
Retailer 22
-
$2,652 USD
View
B
Retailer 23
-
$3,228 USD
£2,542 GBP
View
Most Expensive
B
Brilliant Earth
20085656A · Oct 31
$3,730 USD
View
23 more retailers have this diamond
Prices start from $657 USDSave up to $3,073 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
$657 USD