Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836619131

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619131

Diamond specifications and retailer prices

From $991 USD
As of October 30, 2026
Save $3,859 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,850 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart 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 LG836619131 or 836619131. Listed at 13 retailers as of October 30, 2026, with prices from $991 to $4,850, a $3,859 spread on the same certified stone. Brilliant Earth lists it at $4,850. 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 angle34.7°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619131
Dimensions8.06 × 7.10 × 4.53 mm
L/W Ratio1.14
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
8.06 mm7.10 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619131
Side View
Table 60.0%Crown 34.7°Girdle: MED-STKPavilion 38°Culet: NoneDepth 56.2%

Caratlytics Score

How it works →
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 30
Current: $4,850 USD|Low: $991 USD|High: $4,850 USD|Avg: $2,491 USD
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
October 30, 2026
Retailer 8$991 USD
Retailer 2$1,165 USD
Retailer 10$1,205 USD
Retailer 11$1,210 USD
Retailer 5$1,545 USD
Retailer 6$1,581 USD
Retailer 7$1,889 USD
Retailer 13$2,633 USD
Retailer 12$3,047 USD
Retailer 9$3,383 USD
Retailer 4$3,568 USD
Retailer 3$3,858 USD
Brilliant Earth$4,850 USD

5 data points across 13 retailers

13 retailers$991 USD to $4,850 USD

A
Cheapest Retailer
-
$991 USD
Final sale: no returns
A
Retailer 2
-
$1,165 USD
£918 GBP
View
B+
Retailer 3
-
$1,205 USD
View
B+
Retailer 4
-
$1,210 USD
View
B+
Retailer 5
-
$1,545 USD
View
B+
Retailer 6
-
$1,581 USD
£1,245 GBP
View
B+
Retailer 7
-
$1,889 USD
ZAR 30,521 ZAR
View
B
Retailer 8
-
$2,633 USD
View
B
Retailer 9
-
$3,047 USD
View
B
Retailer 10
-
$3,383 USD
View
B
Retailer 11
-
$3,568 USD
View
B
Retailer 12
-
$3,858 USD
£3,038 GBP
View
Most Expensive
B
Brilliant Earth
22318645A · Oct 30
$4,850 USD
View
12 more retailers have this diamond
Prices start from $991 USDSave up to $3,859 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 Heart
$991 USD