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Heart|Lab Grown|IGI

1.29ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG839630399

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839630399

Diamond specifications and retailer prices

From $350 SGD
As of November 4, 2026
Save $3,586 SGD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,936 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.29ct lab-grown heart diamond

This 1.29ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839630399 or 839630399. Listed at 20 retailers as of October 30, 2026, with prices from $350 to $3,936, a $3,586 spread on the same certified stone. Brilliant Earth lists it at $3,936. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839630399
Dimensions6.87 × 7.52 × 4.13 mm
L/W Ratio1.09
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
6.87 mm7.52 mm1.29 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839630399
Side View
Table 58.0%Crown 34.3°Girdle: THK-VTKPavilion 37.7°Culet: NoneDepth 54.9%

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: $753 SGD|Low: $350 SGD|High: $1,827 SGD|Avg: $849 SGD|+0.3%
Retailer 1
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 4$350 SGD
Retailer 7$392 SGD
Retailer 3$406 SGD
Retailer 2$434 SGD
Retailer 9$434 SGD
Retailer 13$446 SGD
Retailer 19$578 SGD
Retailer 14$639 SGD
Retailer 17$680 SGD
Retailer 16$749 SGD
Retailer 1$753 SGD
Retailer 10$758 SGD
Retailer 18$1,030 SGD
Retailer 15$1,066 SGD
Retailer 6$1,110 SGD
Retailer 8$1,397 SGD
Retailer 11$1,462 SGD
Retailer 12$1,735 SGD
Retailer 5$1,827 SGD

16 data points across 19 retailers

20 retailers$350 SGD to $3,936 SGD

A
Cheapest Retailer
-
$350 SGD
A
Retailer 2
-
$392 SGD
View
Final sale: no returns
A
Retailer 3
-
$406 SGD
View
Retailer 4
-
$434 SGD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$434 SGD
View
A
Retailer 6
-
$446 SGD
View
A
Retailer 7
-
$578 SGD
View
A
Retailer 8
-
$639 SGD
View
A
Retailer 9
-
$680 SGD
View
A
Retailer 10
-
$749 SGD
View
A
Retailer 11
-
$753 SGD
View
A
Retailer 12
-
$758 SGD
View
A
Retailer 13
-
$1,030 SGD
View
A
Retailer 14
-
$1,066 SGD
View
B+
Retailer 15
-
$1,110 SGD
View
B+
Retailer 16
-
$1,397 SGD
View
B+
Retailer 17
-
$1,462 SGD
View
B+
Retailer 18
-
$1,735 SGD
View
B
Retailer 19
-
$1,827 SGD
View
Most Expensive
B
Brilliant Earth
22274415A · Oct 30
$3,936 SGD
$3,080 USD
View
19 more retailers have this diamond
Prices start from $350 SGDSave up to $3,586 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
1.29ct Heart
$350 SGD