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Radiant|Lab Grown|IGI

1.35ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG816615915

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

Certificate IGI LG816615915

Diamond specifications and retailer prices

From $344 USD
As of October 30, 2026
Save $3,666 USD (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,010 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.35ct lab-grown radiant diamond

This 1.35ct 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 LG816615915 or 816615915. Listed at 19 retailers as of October 29, 2026, with prices from $344 to $4,010, a $3,666 spread on the same certified stone. Brilliant Earth lists it at $4,010. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.35
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615915
Dimensions7.63 × 5.32 × 3.86 mm
L/W Ratio1.43
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
7.63 mm5.32 mm1.35 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615915
Side View
Table 66.0%Crown 45.7°Girdle: Slightly ThickPavilion 37.2°Culet: NoneDepth 72.6%

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: Oct 30
Current: $4,010 USD|Low: $323 USD|High: $4,140 USD|Avg: $1,375 USD|-3.1%
Brilliant Earth
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
October 30, 2026
Retailer 11$344 USD
Retailer 7$495 USD
Retailer 16$515 USD
Retailer 13$591 USD
Retailer 10$617 USD
Retailer 2$635 USD
Retailer 4$667 USD
Retailer 15$946 USD
Retailer 12$1,103 USD
Retailer 5$1,120 USD
Retailer 14$1,203 USD
Retailer 6$1,326 USD
Retailer 9$1,447 USD
Retailer 8$1,448 USD
Retailer 3$3,035 USD
Brilliant Earth$4,010 USD

31 data points across 16 retailers

19 retailers$344 USD to $4,010 USD

A
Cheapest Retailer
-
$344 USD
Final sale: no returns
Retailer 2
-
$383 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$447 USD
View
Price last confirmed 32 days ago
Retailer 4
-
$495 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$515 USD
View
A
Retailer 6
-
$591 USD
View
A
Retailer 7
-
$617 USD
ZAR 9,967 ZAR
View
A
Retailer 8
-
$635 USD
£500 GBP
View
A
Retailer 9
-
$667 USD
€635 EUR
View
B+
Retailer 10
-
$946 USD
View
B+
Retailer 11
-
$1,103 USD
View
B+
Retailer 12
-
$1,120 USD
View
B+
Retailer 13
-
$1,203 USD
View
B+
Retailer 14
-
$1,326 USD
SGD 1,792 SGD
View
B+
Retailer 15
-
$1,447 USD
£1,139 GBP
View
Retailer 16
-
$1,448 USD
£1,140 GBP
View
Price last confirmed 25 days ago
Retailer 17
-
$1,592 USD
View
Price last confirmed 29 days ago
Retailer 18
-
$3,035 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21421362A · Oct 29
$4,010 USD
View
18 more retailers have this diamond
Prices start from $344 USDSave up to $3,666 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
1.35ct Radiant
$344 USD