Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG837615522

Shape and cutting style on the report: Round brilliant

Certificate IGI LG837615522

Diamond specifications and retailer prices

From $372 USD
As of October 29, 2026
Save $3,418 USD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,790 USD at Brilliant Earth · As of October 29, 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 LG837615522 or 837615522. Listed at 17 retailers as of October 29, 2026, with prices from $372 to $3,790, a $3,418 spread on the same certified stone. Brilliant Earth lists it at $3,790. 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 angle35.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837615522
Dimensions7.26 × 7.32 × 4.56 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
7.26 mm7.32 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837615522
Side View
Table 58.0%Crown 35.9°Girdle: MediumPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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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: Oct 29
Current: $3,790 USD|Low: $372 USD|High: $3,850 USD|Avg: $1,001 USD|+6.5%
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
October 29, 2026
Retailer 7$372 USD
Retailer 4$461 USD
Retailer 10$532 USD
Retailer 13$555 USD
Retailer 3$560 USD
Retailer 9$659 USD
Retailer 12$710 USD
Retailer 2$736 USD
Retailer 11$964 USD
Retailer 5$1,229 USD
Retailer 14$1,320 USD
Retailer 6$1,464 USD
Retailer 8$1,666 USD
Brilliant Earth$3,790 USD

24 data points across 14 retailers

17 retailers$372 USD to $3,790 USD

A+
Retailer 1
-
$343 USD
Price last confirmed 17 days ago
A
Retailer 2
-
$372 USD
View
Final sale: no returns
A
Retailer 3
-
$425 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
$461 USD
HK$3,600 HKD
View
A
Retailer 5
-
$532 USD
£419 GBP
View
A
Retailer 6
-
$555 USD
View
A
Retailer 7
-
$560 USD
View
A
Retailer 8
-
$659 USD
€628 EUR
View
A
Retailer 9
-
$710 USD
ZAR 11,478 ZAR
View
A
Retailer 10
-
$736 USD
£580 GBP
View
A
Retailer 11
-
$964 USD
A$1,483 AUD
View
B+
Retailer 12
-
$1,229 USD
View
B+
Retailer 13
-
$1,320 USD
SGD 1,784 SGD
View
B+
Retailer 14
-
$1,365 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$1,464 USD
View
B+
Retailer 16
-
$1,666 USD
£1,312 GBP
View
Most Expensive
B
Brilliant Earth
21597844A · Oct 29
$3,790 USD
View
16 more retailers have this diamond
Prices start from $372 USDSave up to $3,418 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
$372 USD