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Radiant|Lab Grown|IGI

1.40ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG836614457

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

Certificate IGI LG836614457

Diamond specifications and retailer prices

From $299 USD
As of October 27, 2026
Save $3,861 USD (93%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,160 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.4ct lab-grown radiant diamond

This 1.4ct 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 LG836614457 or 836614457. Listed at 22 retailers as of October 27, 2026, with prices from $299 to $4,160, a $3,861 spread on the same certified stone. Brilliant Earth lists it at $4,160. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836614457
Dimensions7.93 × 5.34 × 3.74 mm
L/W Ratio1.49
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
7.93 mm5.34 mm1.40 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836614457
Side View
Table 63.0%Crown 43.1°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 70.0%

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 27
Current: $4,160 USD|Low: $299 USD|High: $4,160 USD|Avg: $1,147 USD
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 8$299 USD
Retailer 19$347 USD
Retailer 11$357 USD
Retailer 7$371 USD
Retailer 18$371 USD
Retailer 2$383 USD
Retailer 3$525 USD
Retailer 21$606 USD
Retailer 20$626 USD
Retailer 17$638 USD
Retailer 13$658 USD
Retailer 10$689 USD
Retailer 4$1,012 USD
Retailer 22$1,140 USD
Retailer 6$1,193 USD
Retailer 5$1,241 USD
Retailer 14$1,367 USD
Retailer 16$1,495 USD
Retailer 15$1,550 USD
Retailer 12$2,644 USD
Retailer 9$3,120 USD
Brilliant Earth$4,160 USD

22 data points across 22 retailers

22 retailers$299 USD to $4,160 USD

A
Cheapest Retailer
-
$299 USD
A
Retailer 2
-
$347 USD
View
A
Retailer 3
-
$357 USD
View
Final sale: no returns
A
Retailer 4
-
$371 USD
View
A
Retailer 5
-
$371 USD
View
A
Retailer 6
-
$383 USD
£302 GBP
View
A
Retailer 7
-
$525 USD
View
A
Retailer 8
-
$606 USD
View
A
Retailer 9
-
$626 USD
View
A
Retailer 10
-
$638 USD
ZAR 10,301 ZAR
View
A
Retailer 11
-
$658 USD
£518 GBP
View
A
Retailer 12
-
$689 USD
€656 EUR
View
B+
Retailer 13
-
$1,012 USD
View
B+
Retailer 14
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$1,140 USD
View
B+
Retailer 15
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$1,193 USD
View
B+
Retailer 16
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$1,241 USD
View
B+
Retailer 17
-
$1,367 USD
SGD 1,847 SGD
View
B+
Retailer 18
-
$1,495 USD
£1,177 GBP
View
B
Retailer 19
-
$1,550 USD
View
B
Retailer 20
-
$2,644 USD
View
Retailer 21
-
$3,120 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21738424A · Oct 29
$4,160 USD
View
21 more retailers have this diamond
Prices start from $299 USDSave up to $3,861 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
1.40ct Radiant
$299 USD