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 $274 USD
As of October 30, 2026
Save $2,806 USD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,080 USD 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 $274 to $3,080, a $2,806 spread on the same certified stone. Brilliant Earth lists it at $3,080. 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
Color
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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Price History

Last verified: Oct 30
Current: $598 USD|Low: $274 USD|High: $1,431 USD|Avg: $664 USD|+1.8%
Retailer 1
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
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Retailer 19
November 2, 2026
Retailer 4$274 USD
Retailer 7$307 USD
Retailer 3$318 USD
Retailer 2$340 USD
Retailer 9$340 USD
Retailer 14$350 USD
Retailer 17$452 USD
Retailer 19$455 USD
Retailer 15$532 USD
Retailer 12$587 USD
Retailer 10$593 USD
Retailer 1$598 USD
Retailer 16$806 USD
Retailer 18$828 USD
Retailer 6$869 USD
Retailer 8$1,093 USD
Retailer 11$1,144 USD
Retailer 13$1,363 USD
Retailer 5$1,431 USD

13 data points across 19 retailers

20 retailers$274 USD to $3,080 USD

A
Cheapest Retailer
-
$274 USD
A
Retailer 2
-
$307 USD
View
Final sale: no returns
A
Retailer 3
-
$318 USD
View
Retailer 4
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$340 USD
View
Price last confirmed 7 days ago
A
Retailer 5
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$340 USD
View
A
Retailer 6
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$350 USD
£276 GBP
View
A
Retailer 7
-
$452 USD
View
A
Retailer 8
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$455 USD
View
A
Retailer 9
-
$532 USD
€507 EUR
View
A
Retailer 10
-
$587 USD
ZAR 9,475 ZAR
View
A
Retailer 11
-
$593 USD
View
A
Retailer 12
-
$598 USD
£471 GBP
View
A
Retailer 13
-
$806 USD
View
B+
Retailer 14
-
$828 USD
A$1,274 AUD
View
B+
Retailer 15
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$869 USD
View
B+
Retailer 16
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$1,093 USD
View
B+
Retailer 17
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$1,144 USD
View
B+
Retailer 18
-
$1,363 USD
£1,073 GBP
View
B
Retailer 19
-
$1,431 USD
View
Most Expensive
B
Brilliant Earth
22274415A · Oct 30
$3,080 USD
View
19 more retailers have this diamond
Prices start from $274 USDSave up to $2,806 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
1.29ct Heart
$274 USD