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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG839676181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839676181

Diamond specifications and retailer prices

From $333 USD
As of November 3, 2026
Save $2,637 USD (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,970 USD at Brilliant Earth · As of November 3, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839676181 or 839676181. Listed at 20 retailers as of November 3, 2026, with prices from $333 to $2,970, a $2,637 spread on the same certified stone. Brilliant Earth lists it at $2,970. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839676181
Dimensions7.37 × 7.41 × 4.50 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
7.37 mm7.41 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839676181
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A+
Exceptional
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 3
Current: $2,970 USD|Low: $333 USD|High: $3,910 USD|Avg: $920 USD|-17.7%
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
Retailer 18
Retailer 19
Retailer 20
November 4, 2026
Retailer 18$333 USD
Retailer 13$373 USD
Retailer 4$387 USD
Retailer 5$413 USD
Retailer 9$419 USD
Retailer 10$460 USD
Retailer 2$528 USD
Retailer 8$560 USD
Retailer 16$565 USD
Retailer 17$673 USD
Retailer 11$675 USD
Retailer 6$722 USD
Retailer 15$731 USD
Retailer 14$971 USD
Retailer 19$1,213 USD
Retailer 3$1,320 USD
Retailer 20$1,329 USD
Retailer 12$1,474 USD
Retailer 7$1,680 USD
Brilliant Earth$2,970 USD

21 data points across 20 retailers

20 retailers$333 USD to $2,970 USD

A+
Cheapest Retailer
-
$333 USD
A
Retailer 2
-
$373 USD
View
Final sale: no returns
A
Retailer 3
-
$387 USD
View
A
Retailer 4
-
$413 USD
View
Retailer 5
-
$419 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$460 USD
View
A
Retailer 7
-
$528 USD
View
A
Retailer 8
-
$560 USD
View
A
Retailer 9
-
$565 USD
View
A
Retailer 10
-
$673 USD
View
A
Retailer 11
-
$675 USD
View
A
Retailer 12
-
$722 USD
View
A
Retailer 13
-
$731 USD
View
A
Retailer 14
-
$971 USD
View
B+
Retailer 15
-
$1,213 USD
View
B+
Retailer 16
-
$1,320 USD
View
B+
Retailer 17
-
$1,329 USD
View
B+
Retailer 18
-
$1,474 USD
View
B+
Retailer 19
-
$1,680 USD
View
Most Expensive
B
Brilliant Earth
21696745A · Nov 3
$2,970 USD
View
19 more retailers have this diamond
Prices start from $333 USDSave up to $2,637 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
$333 USD