Radiant|Lab Grown|IGI

1.29ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG840630413

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG840630413

Diamond specifications and retailer prices

From $271 USD
As of November 2, 2026
Save $2,185 USD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,510 USD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.29ct lab-grown radiant diamond

This 1.29ct lab-grown radiant 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 top-tier cut grade and certified by IGI LG840630413 or 840630413. Listed at 22 retailers as of November 2, 2026, with a 806% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.5°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840630413
Dimensions7.36 × 5.37 × 3.68 mm
L/W Ratio1.37
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
7.36 mm5.37 mm1.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840630413
Side View
Table 64.0%Crown 48.5°Girdle: MediumPavilion 37.6°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,510 USD|Low: $271 USD|High: $3,340 USD|Avg: $1,039 USD|-0.4%
Rare Carat
Retailer 2
Retailer 3
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Retailer 5
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 22
November 2, 2026
Retailer 13$271 USD
Retailer 3$322 USD
Retailer 11$329 USD
Retailer 10$345 USD
Retailer 22$345 USD
Retailer 2$355 USD
Retailer 21$505 USD
Retailer 5$568 USD
Retailer 17$594 USD
Retailer 4$597 USD
Retailer 16$607 USD
Retailer 19$644 USD
Retailer 7$870 USD
Retailer 6$1,059 USD
Retailer 9$1,108 USD
Retailer 8$1,159 USD
Retailer 15$1,274 USD
Retailer 18$1,382 USD
Retailer 12$1,428 USD
Retailer 20$2,190 USD
Retailer 14$2,456 USD
Rare Carat$2,510 USD

20 data points across 22 retailers

22 retailers$271 USD to $2,456 USD

A+
Cheapest Retailer
-
$271 USD
A
Retailer 2
-
$322 USD
View
A
Retailer 3
-
$329 USD
View
Final sale: no returns
A
Retailer 4
-
$345 USD
View
Retailer 5
-
$345 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$355 USD
£279 GBP
View
A
Retailer 7
-
$505 USD
View
A
Retailer 8
-
$568 USD
View
A
Retailer 9
-
$594 USD
ZAR 9,600 ZAR
View
A
Retailer 10
-
$597 USD
View
A
Retailer 11
-
$607 USD
£478 GBP
View
A
Retailer 12
-
$644 USD
€613 EUR
View
B+
Retailer 13
-
$870 USD
View
B+
Retailer 14
-
$1,059 USD
View
B+
Retailer 15
-
$1,108 USD
View
B+
Retailer 16
-
$1,159 USD
View
B+
Retailer 17
-
$1,274 USD
SGD 1,721 SGD
View
B+
Retailer 18
-
$1,382 USD
£1,088 GBP
View
B
Retailer 19
-
$1,428 USD
View
B
Retailer 20
-
$2,190 USD
View
B
Retailer 21
-
$2,456 USD
View
Most Expensive
Rare Carat
JH-252758 · Oct 18
$2,510 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from $271 USDSave up to $2,185 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 Radiant
$271 USD