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Radiant|Lab Grown|IGI

1.31ct D FL Radiant Lab Grown Diamond

EX • D/FL

Diamond specifications and retailer prices

From $275 USD
As of November 2, 2026
Save $2,213 USD (89%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,488 USD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.31ct lab-grown radiant diamond

This 1.31ct 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. Listed at 7 retailers as of November 1, 2026, with prices from $275 to $2,488, a $2,213 spread on the same certified stone. Helzberg Diamonds lists it at $2,488. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.53 × 5.46 × 3.78 mm
L/W Ratio1.38
Top View
7.53 mm5.46 mm1.31 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 63.0%CrownGirdle: MediumPavilionCulet: NoneDepth 69.2%

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: Nov 2
Current: $2,488 USD|Low: $275 USD|High: $2,745 USD|Avg: $971 USD|-9.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$275 USD
Retailer 7$327 USD
Retailer 4$349 USD
Retailer 6$349 USD
Retailer 3$602 USD
Retailer 5$1,123 USD
Helzberg Diamonds$2,488 USD

12 data points across 7 retailers

7 retailers$275 USD to $2,488 USD

A
Cheapest Retailer
-
$275 USD
A
Retailer 2
-
$327 USD
View
Retailer 3
-
$349 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$349 USD
View
A
Retailer 5
-
$602 USD
View
B+
Retailer 6
-
$1,123 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOILMMHJOK · Nov 1
$2,488 USD
View
6 more retailers have this diamond
Prices start from $275 USDSave up to $2,213 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
1.31ct Radiant
$275 USD