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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 $936 USD
As of November 2, 2026
Save $2,358 USD (72%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,294 USD at MOH London · As of November 3, 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 2, 2026, with prices from $936 to $3,294, a $2,358 spread on the same certified stone. MOH London lists it at $3,294. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,294 USD|Low: $936 USD|High: $3,338 USD|Avg: $1,825 USD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 5$936 USD
Retailer 3$1,120 USD
Retailer 2$1,239 USD
Retailer 4$2,697 USD
MOH London$3,294 USD

38 data points across 5 retailers

5 retailers$936 USD to $3,294 USD

B+
Cheapest Retailer
-
$936 USD
B+
Retailer 2
-
$1,120 USD
View
B+
Retailer 3
-
$1,239 USD
£976 GBP
View
B
Retailer 4
-
$2,697 USD
View
Most Expensive
B
MOH London
LG694589587 · Nov 3
$3,294 USD
£2,594 GBP
View
4 more retailers have this diamond
Prices start from $936 USDSave up to $2,358 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.

B+
1.23ct Heart
$936 USD