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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 £205 GBP
$275 USD
As of November 2, 2026
Save £1,649 GBP (89%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,854 GBP at Helzberg Diamonds · As of November 3, 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 2, 2026, with prices from £205 to £1,854, a £1,649 spread on the same certified stone. Helzberg Diamonds lists it at £1,854. 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
Colour
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: £1,854 GBP|Low: £205 GBP|High: £2,046 GBP|Avg: £710 GBP|-9.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 3£205 GBP
Retailer 7£244 GBP
Retailer 2£254 GBP
Retailer 6£260 GBP
Retailer 4£449 GBP
Retailer 5£837 GBP
Helzberg Diamonds£1,854 GBP

13 data points across 7 retailers

7 retailers£205 GBP to £1,854 GBP

A
Cheapest Retailer
-
£205 GBP
$275 USD
A
Retailer 2
-
£244 GBP
$327 USD
View
A
Retailer 3
-
£254 GBP
$341 USD
View
Retailer 4
-
£260 GBP
$349 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
£449 GBP
$602 USD
View
B+
Retailer 6
-
£837 GBP
$1,123 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOILMMHJOK · Nov 3
£1,854 GBP
$2,488 USD
View
6 more retailers have this diamond
Prices start from £205 GBPSave up to £1,649 GBP

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
£205 GBP