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Heart|Lab Grown|IGI

1.50ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG636479171

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG636479171

Diamond specifications and retailer prices

From $206 USD
As of November 6, 2026
Save $667 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,660 USD at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG636479171 or 636479171. Listed at 14 retailers as of November 6, 2026, with a 324% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.1°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG636479171
Dimensions7.17 × 8.05 × 4.54 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.17 mm8.05 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636479171
Side View
Table 62.0%Crown 31.1°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 56.4%

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: Nov 6
Current: $1,660 USD|Low: $198 USD|High: $1,660 USD|Avg: $572 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$206 USD
Retailer 6$239 USD
Retailer 8$255 USD
Retailer 11$255 USD
Retailer 5$324 USD
Retailer 3$442 USD
Retailer 7$463 USD
Retailer 2$820 USD
Retailer 10$823 USD
Retailer 9$1,198 USD
Brilliant Earth$1,660 USD

41 data points across 11 retailers

14 retailers$206 USD to $873 USD

A
Cheapest Retailer
-
$206 USD
A
Retailer 2
-
$239 USD
View
A
Retailer 3
-
$255 USD
View
Retailer 4
-
$255 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$324 USD
View
B+
Retailer 6
-
$442 USD
View
B+
Retailer 7
-
$460 USD
View
A
Retailer 8
-
$463 USD
View
B+
Retailer 9
-
$510 USD
View
B
Retailer 10
-
$820 USD
View
B
Retailer 11
-
$823 USD
View
B
Retailer 12
-
$873 USD
View
Retailer 13
-
$1,198 USD
View
Price last confirmed 8 days ago
Most Expensive
Brilliant Earth
15813751A · Oct 18
$1,660 USD
View
Price last confirmed 18 days ago
13 more retailers have this diamond
Prices start from $206 USDSave up to $667 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
1.50ct Heart
$206 USD