Heart|Lab Grown|IGI

1.23ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG729579236

Certificate IGI LG729579236

Diamond specifications and retailer prices

From $2,730 USD
As of November 1, 2026
2 retailers carry this diamond
Most expensive: $2,730 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG729579236 or 729579236. Listed at 2 retailers as of October 31, 2026, with a relatively tight 0% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG729579236
Dimensions7.55 × 6.59 × 4.29 mm
L/W Ratio1.15
Top View
7.55 mm6.59 mm1.23 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729579236
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 56.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,730 USD|Low: $2,730 USD|High: $2,910 USD|Avg: $2,775 USD|-6.2%
Brilliant Earth
Retailer 2
October 30, 2026
Brilliant Earth$2,730 USD
Retailer 2$2,730 USD

2 data points across 2 retailers

2 retailers$2,730 USD to $2,730 USD

B
Cheapest Retailer
-
$2,730 USD
Most Expensive
B
Brilliant Earth
15907571Y · Oct 31
$2,730 USD
View
1 more retailer has this diamond
Prices start from $2,730 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
$2,730 USD