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Heart|Lab Grown|IGI

1.45ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG831691891

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831691891

Diamond specifications and retailer prices

From $401 USD
As of November 4, 2026
Save $2,619 USD (87%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,020 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.45ct lab-grown heart diamond

This 1.45ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831691891 or 831691891. Listed at 17 retailers as of November 4, 2026, with prices from $401 to $3,020, a $2,619 spread on the same certified stone. Brilliant Earth lists it at $3,020. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.1°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831691891
Dimensions6.91 × 7.76 × 4.54 mm
L/W Ratio1.12
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
6.91 mm7.76 mm1.45 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831691891
Side View
Table 59.0%Crown 39.1°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 58.5%

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: Nov 4
Current: $3,020 USD|Low: $401 USD|High: $3,020 USD|Avg: $1,163 USD
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
November 5, 2026
Retailer 13$401 USD
Retailer 4$449 USD
Retailer 15$481 USD
Retailer 8$497 USD
Retailer 12$510 USD
Retailer 11$645 USD
Retailer 5$780 USD
Retailer 16$786 USD
Retailer 2$807 USD
Retailer 6$1,112 USD
Retailer 17$1,393 USD
Retailer 9$1,565 USD
Retailer 14$1,597 USD
Retailer 7$1,632 USD
Retailer 3$1,790 USD
Retailer 10$1,935 USD
Brilliant Earth$3,020 USD

3 data points across 17 retailers

17 retailers$401 USD to $3,020 USD

A
Cheapest Retailer
-
$401 USD
A
Retailer 2
-
$449 USD
View
A
Retailer 3
-
$481 USD
View
Final sale: no returns
A
Retailer 4
-
$497 USD
View
A
Retailer 5
-
$510 USD
View
A
Retailer 6
-
$645 USD
View
A
Retailer 7
-
$780 USD
View
A
Retailer 8
-
$786 USD
View
A
Retailer 9
-
$807 USD
View
B+
Retailer 10
-
$1,112 USD
View
B+
Retailer 11
-
$1,393 USD
View
B+
Retailer 12
-
$1,565 USD
View
B+
Retailer 13
-
$1,597 USD
View
B
Retailer 14
-
$1,632 USD
View
B
Retailer 15
-
$1,790 USD
View
B
Retailer 16
-
$1,935 USD
View
Most Expensive
B
Brilliant Earth
22480674A · Nov 4
$3,020 USD
View
16 more retailers have this diamond
Prices start from $401 USDSave up to $2,619 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
1.45ct Heart
$401 USD