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 $344 USD
As of October 30, 2026
Save $2,236 USD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,580 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 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 October 30, 2026, with prices from $344 to $2,580, a $2,236 spread on the same certified stone. Brilliant Earth lists it at $2,580. 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
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

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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: Oct 30
Current: $2,580 USD|Low: $344 USD|High: $3,230 USD|Avg: $1,061 USD|-20.1%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
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Retailer 19
November 1, 2026
Retailer 8$344 USD
Retailer 3$399 USD
Retailer 9$408 USD
Retailer 17$427 USD
Retailer 19$427 USD
Retailer 2$439 USD
Retailer 16$580 USD
Retailer 6$671 USD
Retailer 10$686 USD
Retailer 15$733 USD
Retailer 12$766 USD
Retailer 4$823 USD
Retailer 13$1,060 USD
Retailer 18$1,371 USD
Retailer 7$1,414 USD
Retailer 11$1,541 USD
Retailer 14$1,675 USD
Retailer 5$1,770 USD
Brilliant Earth$2,580 USD

29 data points across 19 retailers

19 retailers$344 USD to $2,580 USD

A
Cheapest Retailer
-
$344 USD
A
Retailer 2
-
$399 USD
View
A
Retailer 3
-
$408 USD
View
Final sale: no returns
Retailer 4
-
$427 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$427 USD
View
A
Retailer 6
-
$439 USD
£346 GBP
View
A
Retailer 7
-
$580 USD
View
A
Retailer 8
-
$671 USD
View
A
Retailer 9
-
$686 USD
View
B+
Retailer 10
-
$733 USD
ZAR 11,842 ZAR
View
B+
Retailer 11
-
$766 USD
£603 GBP
View
B+
Retailer 12
-
$823 USD
View
B+
Retailer 13
-
$1,060 USD
View
B+
Retailer 14
-
$1,371 USD
View
B+
Retailer 15
-
$1,414 USD
View
B
Retailer 16
-
$1,541 USD
SGD 2,082 SGD
View
B
Retailer 17
-
$1,675 USD
£1,319 GBP
View
B
Retailer 18
-
$1,770 USD
View
Most Expensive
B
Brilliant Earth
21621190A · Oct 31
$2,580 USD
View
18 more retailers have this diamond
Prices start from $344 USDSave up to $2,236 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.

A
1.23ct Heart
$344 USD