Heart|Lab Grown|IGI

1.28ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG836619541

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619541

Diamond specifications and retailer prices

From $357 USD
As of October 30, 2026
Save $2,323 USD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,680 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.28ct lab-grown heart diamond

This 1.28ct 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 very-good cut grade and certified by IGI LG836619541 or 836619541. Listed at 19 retailers as of October 30, 2026, with prices from $357 to $2,680, a $2,323 spread on the same certified stone. Brilliant Earth lists it at $2,680. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619541
Dimensions6.70 × 7.48 × 4.29 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
6.70 mm7.48 mm1.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619541
Side View
Table 58.0%Crown 38.4°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 57.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,680 USD|Low: $357 USD|High: $3,370 USD|Avg: $1,082 USD|-20.5%
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
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Retailer 19
November 1, 2026
Retailer 9$357 USD
Retailer 3$414 USD
Retailer 5$424 USD
Retailer 17$442 USD
Retailer 19$442 USD
Retailer 2$456 USD
Retailer 16$670 USD
Retailer 7$688 USD
Retailer 10$708 USD
Retailer 15$760 USD
Retailer 12$790 USD
Retailer 4$885 USD
Retailer 13$1,103 USD
Retailer 18$1,422 USD
Retailer 8$1,463 USD
Retailer 11$1,599 USD
Retailer 14$1,739 USD
Retailer 6$1,842 USD
Brilliant Earth$2,680 USD

28 data points across 19 retailers

19 retailers$357 USD to $2,680 USD

A
Cheapest Retailer
-
$357 USD
A
Retailer 2
-
$414 USD
View
A
Retailer 3
-
$424 USD
View
Final sale: no returns
A
Retailer 4
-
$442 USD
View
Retailer 5
-
$442 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$456 USD
£359 GBP
View
A
Retailer 7
-
$670 USD
View
A
Retailer 8
-
$688 USD
View
A
Retailer 9
-
$708 USD
View
A
Retailer 10
-
$760 USD
ZAR 12,284 ZAR
View
B+
Retailer 11
-
$790 USD
£622 GBP
View
B+
Retailer 12
-
$885 USD
View
B+
Retailer 13
-
$1,103 USD
View
B
Retailer 14
-
$1,422 USD
View
B
Retailer 15
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$1,463 USD
View
B
Retailer 16
-
$1,599 USD
SGD 2,161 SGD
View
B
Retailer 17
-
$1,739 USD
£1,369 GBP
View
B
Retailer 18
-
$1,842 USD
View
Most Expensive
B
Brilliant Earth
21695228A · Oct 31
$2,680 USD
View
18 more retailers have this diamond
Prices start from $357 USDSave up to $2,323 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
1.28ct Heart
$357 USD