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Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG650418911

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG650418911

Diamond specifications and retailer prices

From €192 EUR
$215 USD
As of October 30, 2026
Save €917 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,110 EUR at Brilliant Earth · As of October 31, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650418911 or 650418911. Listed at 13 retailers as of October 30, 2026, with prices from €192 to €1,110, a €917 spread on the same certified stone. Brilliant Earth lists it at €1,110. 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

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650418911
Dimensions6.97 × 8.10 × 4.63 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.97 mm8.10 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650418911
Side View
Table 56.0%Crown 33.1°Girdle: MED-STKPavilion 39°Culet: NoneDepth 57.2%

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: €1,110 EUR|Low: €191 EUR|High: €1,790 EUR|Avg: €582 EUR|-38.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4€192 EUR
Retailer 10€216 EUR
Retailer 12€223 EUR
Retailer 7€239 EUR
Retailer 11€322 EUR
Retailer 5€442 EUR
Retailer 3€445 EUR
Retailer 8€466 EUR
Retailer 6€619 EUR
Retailer 9€767 EUR
Retailer 2€956 EUR
Brilliant Earth€1,110 EUR

43 data points across 12 retailers

13 retailers€192 EUR to €1,110 EUR

A
Cheapest Retailer
-
€192 EUR
$215 USD
A
Retailer 2
-
€216 EUR
$241 USD
View
Final sale: no returns
A
Retailer 3
-
€223 EUR
$249 USD
View
A
Retailer 4
-
€239 EUR
$267 USD
View
Retailer 5
-
€246 EUR
$275 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
€322 EUR
$360 USD
View
B+
Retailer 7
-
€442 EUR
£389 GBP
View
B+
Retailer 8
-
€445 EUR
$497 USD
View
B+
Retailer 9
-
€466 EUR
$521 USD
View
B+
Retailer 10
-
€619 EUR
$691 USD
View
B
Retailer 11
-
€767 EUR
$857 USD
View
B
Retailer 12
-
€956 EUR
£841 GBP
View
Most Expensive
B
Brilliant Earth
12166023A · Oct 31
€1,110 EUR
$1,240 USD
View
12 more retailers have this diamond
Prices start from €192 EURSave up to €917 EUR

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
€192 EUR