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Heart|Lab Grown|IGI

1.23ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG836612562

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836612562

Diamond specifications and retailer prices

From $490 AUD
As of November 4, 2026
Save $3,187 AUD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,678 AUD at Brilliant Earth · As of November 4, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836612562 or 836612562. Listed at 19 retailers as of November 4, 2026, with prices from $490 to $3,678, a $3,187 spread on the same certified stone. Brilliant Earth lists it at $3,678. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836612562
Dimensions6.51 × 7.40 × 4.30 mm
L/W Ratio1.14
Girdle conditionFaceted
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
6.51 mm7.40 mm1.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836612562
Side View
Table 57.0%Crown 36.5°Girdle: STK-THKPavilion 37.5°Culet: NoneDepth 58.1%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $3,678 AUD|Low: $490 AUD|High: $3,678 AUD|Avg: $1,305 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 8$490 AUD
Retailer 3$569 AUD
Retailer 9$582 AUD
Retailer 17$609 AUD
Retailer 19$609 AUD
Retailer 12$624 AUD
Retailer 16$827 AUD
Retailer 6$957 AUD
Retailer 10$978 AUD
Retailer 15$1,048 AUD
Retailer 2$1,081 AUD
Retailer 4$1,173 AUD
Retailer 14$1,528 AUD
Retailer 18$1,954 AUD
Retailer 7$2,014 AUD
Retailer 11$2,195 AUD
Retailer 13$2,375 AUD
Retailer 5$2,523 AUD
Brilliant Earth$3,678 AUD

30 data points across 19 retailers

19 retailers$490 AUD to $3,678 AUD

A
Cheapest Retailer
-
$490 AUD
A
Retailer 2
-
$569 AUD
View
A
Retailer 3
-
$582 AUD
View
Final sale: no returns
Retailer 4
-
$609 AUD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$609 AUD
View
A
Retailer 6
-
$624 AUD
View
A
Retailer 7
-
$827 AUD
View
A
Retailer 8
-
$957 AUD
View
A
Retailer 9
-
$978 AUD
View
B+
Retailer 10
-
$1,048 AUD
View
B+
Retailer 11
-
$1,081 AUD
View
B+
Retailer 12
-
$1,173 AUD
View
B+
Retailer 13
-
$1,528 AUD
View
B+
Retailer 14
-
$1,954 AUD
View
B+
Retailer 15
-
$2,014 AUD
View
B
Retailer 16
-
$2,195 AUD
View
B
Retailer 17
-
$2,375 AUD
View
B
Retailer 18
-
$2,523 AUD
View
Most Expensive
B
Brilliant Earth
21621190A · Nov 4
$3,678 AUD
$2,580 USD
View
18 more retailers have this diamond
Prices start from $490 AUDSave up to $3,187 AUD

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
1.23ct Heart
$490 AUD