Heart|Lab Grown|IGI

1.51ct H SI1 Heart Lab Grown Diamond

ID • H/SI1 • IGI LG733547577

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG733547577

Diamond specifications and retailer prices

From €401 EUR
As of October 31, 2026
Save €565 EUR (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €966 EUR at MOH London · As of November 1, 2026
View at MOH London

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733547577 or 733547577. Listed at 5 retailers as of October 31, 2026, with prices from €401 to €966, a €565 spread on the same certified stone. MOH London lists it at €966. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733547577
Dimensions7.77 × 7.17 × 4.73 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.77 mm7.17 mm1.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733547577
Side View
Table 54.0%Crown 35°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €966 EUR|Low: €349 EUR|High: €976 EUR|Avg: €523 EUR|+1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2€401 EUR
Retailer 4€414 EUR
Retailer 5€415 EUR
Retailer 3€535 EUR
MOH London€966 EUR

16 data points across 5 retailers

5 retailers€401 EUR to €966 EUR

A
Cheapest Retailer
-
€401 EUR
A
Retailer 2
-
€414 EUR
$462 USD
View
A
Retailer 3
-
€415 EUR
$464 USD
View
B+
Retailer 4
-
€535 EUR
$598 USD
View
Most Expensive
B+
MOH London
LG733547577 · Nov 1
€966 EUR
£850 GBP
View
4 more retailers have this diamond
Prices start from €401 EURSave up to €565 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
€401 EUR