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Round|Lab Grown|IGI

1.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG783659904

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783659904

Diamond specifications and retailer prices

From $359 USD
As of October 29, 2026
Save $1,621 USD (82%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $1,980 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round 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 LG783659904 or 783659904. Listed at 25 retailers as of October 29, 2026, with prices from $359 to $1,980, a $1,621 spread on the same certified stone. Brilliant Earth lists it at $1,980. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783659904
Dimensions6.95 × 7.00 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.95 mm7.00 mm1.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783659904
Side View
Table 58.0%Crown 34.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
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: Oct 29
Current: $1,980 USD|Low: $354 USD|High: $2,630 USD|Avg: $1,066 USD|-24.7%
Brilliant Earth
Retailer 2
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Retailer 24
October 31, 2026
Retailer 17$359 USD
Retailer 12$402 USD
Retailer 7$416 USD
Retailer 4$445 USD
Retailer 11$445 USD
Retailer 24$595 USD
Retailer 14$598 USD
Retailer 9$690 USD
Retailer 2$716 USD
Retailer 21$740 USD
Retailer 22$765 USD
Retailer 18$800 USD
Retailer 5$831 USD
Retailer 19$1,081 USD
Retailer 3$1,112 USD
Retailer 13$1,244 USD
Retailer 23$1,400 USD
Retailer 16$1,419 USD
Retailer 6$1,431 USD
Retailer 10$1,472 USD
Retailer 15$1,701 USD
Retailer 20$1,749 USD
Retailer 8$1,753 USD
Brilliant Earth$1,980 USD

28 data points across 24 retailers

25 retailers$359 USD to $1,980 USD

A
Cheapest Retailer
-
$359 USD
A
Retailer 2
-
$402 USD
View
Final sale: no returns
A
Retailer 3
-
$416 USD
View
A
Retailer 4
-
$445 USD
View
A
Retailer 5
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$445 USD
View
A
Retailer 6
-
$595 USD
View
A
Retailer 7
-
$598 USD
View
A
Retailer 8
-
$690 USD
View
A
Retailer 9
-
$716 USD
€682 EUR
View
A
Retailer 10
-
$740 USD
A$1,138 AUD
View
A
Retailer 11
-
$765 USD
ZAR 12,359 ZAR
View
A
Retailer 12
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$800 USD
£630 GBP
View
A
Retailer 13
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$831 USD
View
B+
Retailer 14
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$1,081 USD
A$1,663 AUD
View
B+
Retailer 15
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$1,112 USD
View
B+
Retailer 16
-
$1,244 USD
A$1,914 AUD
View
Retailer 17
-
$1,341 USD
View
Price last confirmed 8 days ago
B+
Retailer 18
-
$1,400 USD
View
B+
Retailer 19
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$1,419 USD
SGD 1,917 SGD
View
B+
Retailer 20
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$1,431 USD
View
B+
Retailer 21
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$1,472 USD
View
B+
Retailer 22
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$1,701 USD
View
B+
Retailer 23
-
$1,749 USD
£1,377 GBP
View
B+
Retailer 24
-
$1,753 USD
View
Most Expensive
B
Brilliant Earth
18278646A · Oct 30
$1,980 USD
View
24 more retailers have this diamond
Prices start from $359 USDSave up to $1,621 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 Round
$359 USD