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Radiant|Lab Grown|IGI

1.31ct D FL Radiant Lab Grown Diamond

D/FL

Diamond specifications and retailer prices

From £197 GBP
$265 USD
As of November 2, 2026
Save £1,657 GBP (89%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,854 GBP at Helzberg Diamonds · As of November 2, 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) and certified by IGI. Listed at 6 retailers as of November 2, 2026, with prices from £197 to £1,854, a £1,657 spread on the same certified stone. Helzberg Diamonds lists it at £1,854. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
D
Colour
FL
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.73 × 5.35 × 3.67 mm
L/W Ratio1.44
Top View
7.73 mm5.35 mm1.31 ctD / FL
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 65.0%CrownGirdle: MED-STKPavilionCuletDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
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: £1,854 GBP|Low: £197 GBP|High: £1,854 GBP|Avg: £757 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 2£197 GBP
Retailer 6£238 GBP
Retailer 3£254 GBP
Retailer 5£254 GBP
Retailer 4£817 GBP
Helzberg Diamonds£1,854 GBP

10 data points across 6 retailers

6 retailers£197 GBP to £1,854 GBP

A
Cheapest Retailer
-
£197 GBP
$265 USD
B+
Retailer 2
-
£238 GBP
$319 USD
View
Retailer 3
-
£254 GBP
$341 USD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£254 GBP
$341 USD
View
B
Retailer 5
-
£817 GBP
$1,097 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZOGKMKPMMO · Nov 2
£1,854 GBP
$2,488 USD
View
5 more retailers have this diamond
Prices start from £197 GBPSave up to £1,657 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
£197 GBP