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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 $456 SGD
As of November 4, 2026
Save $2,969 SGD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,425 SGD at Brilliant Earth · As of November 4, 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 November 4, 2026, with prices from $456 to $3,425, a $2,969 spread on the same certified stone. Brilliant Earth lists it at $3,425. 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
Colour
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: Nov 4
Current: $3,425 SGD|Low: $456 SGD|High: $4,294 SGD|Avg: $1,314 SGD|-20.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 9$456 SGD
Retailer 3$529 SGD
Retailer 5$542 SGD
Retailer 17$565 SGD
Retailer 19$565 SGD
Retailer 13$580 SGD
Retailer 14$760 SGD
Retailer 7$879 SGD
Retailer 10$905 SGD
Retailer 16$975 SGD
Retailer 2$1,008 SGD
Retailer 4$1,131 SGD
Retailer 15$1,425 SGD
Retailer 18$1,817 SGD
Retailer 8$1,870 SGD
Retailer 11$2,043 SGD
Retailer 12$2,203 SGD
Retailer 6$2,354 SGD
Brilliant Earth$3,425 SGD

30 data points across 19 retailers

19 retailers$456 SGD to $3,425 SGD

A
Cheapest Retailer
-
$456 SGD
A
Retailer 2
-
$529 SGD
View
A
Retailer 3
-
$542 SGD
View
Final sale: no returns
A
Retailer 4
-
$565 SGD
View
Retailer 5
-
$565 SGD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$580 SGD
View
A
Retailer 7
-
$760 SGD
View
A
Retailer 8
-
$879 SGD
View
A
Retailer 9
-
$905 SGD
View
A
Retailer 10
-
$975 SGD
View
B+
Retailer 11
-
$1,008 SGD
View
B+
Retailer 12
-
$1,131 SGD
View
B+
Retailer 13
-
$1,425 SGD
View
B
Retailer 14
-
$1,817 SGD
View
B
Retailer 15
-
$1,870 SGD
View
B
Retailer 16
-
$2,043 SGD
View
B
Retailer 17
-
$2,203 SGD
View
B
Retailer 18
-
$2,354 SGD
View
Most Expensive
B
Brilliant Earth
21695228A · Nov 4
$3,425 SGD
$2,680 USD
View
18 more retailers have this diamond
Prices start from $456 SGDSave up to $2,969 SGD

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
$456 SGD