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Heart|Lab Grown|IGI

1.29ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG776639120

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG776639120

Diamond specifications and retailer prices

From €278 EUR
$311 USD
As of October 30, 2026
Save €1,153 EUR (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €1,431 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.29ct lab-grown heart diamond

This 1.29ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG776639120 or 776639120. Listed at 9 retailers as of October 29, 2026, with prices from €278 to €1,431, a €1,153 spread on the same certified stone. MOH London lists it at €1,431. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776639120
Dimensions6.94 × 7.66 × 4.41 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
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
6.94 mm7.66 mm1.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776639120
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 40°Culet: NoneDepth 57.6%

Caratlytics Score

How it works →
A+
Exceptional
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 30
Current: €1,431 EUR|Low: €278 EUR|High: €1,794 EUR|Avg: €793 EUR|-19.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5€278 EUR
Retailer 8€332 EUR
Retailer 9€400 EUR
Retailer 2€550 EUR
Retailer 6€562 EUR
Retailer 4€568 EUR
Retailer 3€1,013 EUR
Retailer 7€1,142 EUR
MOH London€1,431 EUR

36 data points across 9 retailers

9 retailers€278 EUR to €1,431 EUR

A+
Cheapest Retailer
-
€278 EUR
$311 USD
A
Retailer 2
-
€332 EUR
$371 USD
View
A
Retailer 3
-
€400 EUR
$447 USD
View
Final sale: no returns
A
Retailer 4
-
€550 EUR
$615 USD
View
A
Retailer 5
-
€562 EUR
$628 USD
View
A
Retailer 6
-
€568 EUR
$635 USD
View
B+
Retailer 7
-
€1,013 EUR
$1,132 USD
View
B+
Retailer 8
-
€1,142 EUR
$1,276 USD
View
Most Expensive
B+
MOH London
LG776639120 · Oct 29
€1,431 EUR
£1,259 GBP
View
8 more retailers have this diamond
Prices start from €278 EURSave up to €1,153 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+
1.29ct Heart
€278 EUR