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Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

D/FL

Diamond specifications and retailer prices

From £220 GBP
$295 USD
As of October 30, 2026
Save £1,725 GBP (89%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,945 GBP at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.38ct lab-grown radiant diamond

This 1.38ct 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 October 30, 2026, with prices from £220 to £1,945, a £1,725 spread on the same certified stone. Helzberg Diamonds lists it at £1,945. 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

1.38
Carat
D
Colour
FL
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.35 × 5.57 × 3.85 mm
L/W Ratio1.32
Top View
7.35 mm5.57 mm1.38 ctD / FL
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCuletDepth 69.1%

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: Oct 30
Current: £1,945 GBP|Low: £220 GBP|High: £1,945 GBP|Avg: £823 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2£220 GBP
Retailer 6£256 GBP
Retailer 3£273 GBP
Retailer 5£273 GBP
Retailer 4£878 GBP
Helzberg Diamonds£1,945 GBP

9 data points across 6 retailers

6 retailers£220 GBP to £1,945 GBP

A
Cheapest Retailer
-
£220 GBP
$295 USD
B+
Retailer 2
-
£256 GBP
$343 USD
View
B+
Retailer 3
-
£273 GBP
$366 USD
View
B+
Retailer 4
-
£273 GBP
$366 USD
View
B
Retailer 5
-
£878 GBP
$1,177 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZOHOMLJNOL · Oct 31
£1,945 GBP
$2,606 USD
View
5 more retailers have this diamond
Prices start from £220 GBPSave up to £1,725 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
1.38ct Radiant
£220 GBP