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Heart|Lab Grown|IGI

1.23ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG694589587

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG694589587

Diamond specifications and retailer prices

From €838 EUR
$936 USD
As of November 2, 2026
Save €2,111 EUR (72%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €2,949 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG694589587 or 694589587. Listed at 5 retailers as of November 1, 2026, with prices from €838 to €2,949, a €2,111 spread on the same certified stone. MOH London lists it at €2,949. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694589587
Dimensions6.64 × 7.34 × 4.36 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.64 mm7.34 mm1.23 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694589587
Side View
Table 58.0%Crown 33.5°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €2,949 EUR|Low: €838 EUR|High: €2,987 EUR|Avg: €1,627 EUR|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5€838 EUR
Retailer 3€1,003 EUR
Retailer 2€1,120 EUR
Retailer 4€2,414 EUR
MOH London€2,949 EUR

38 data points across 5 retailers

5 retailers€838 EUR to €2,949 EUR

B+
Cheapest Retailer
-
€838 EUR
$936 USD
B+
Retailer 2
-
€1,003 EUR
$1,120 USD
View
B+
Retailer 3
-
€1,120 EUR
£985 GBP
View
B
Retailer 4
-
€2,414 EUR
$2,697 USD
View
Most Expensive
B
MOH London
LG694589587 · Nov 1
€2,949 EUR
£2,594 GBP
View
4 more retailers have this diamond
Prices start from €838 EURSave up to €2,111 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.

B+
1.23ct Heart
€838 EUR