Radiant|Lab Grown|IGI

1.25ct D FL Radiant Lab Grown Diamond

GD • D/FL

Diamond specifications and retailer prices

From £174 GBP
$234 USD
As of November 2, 2026
Save £1,181 GBP (87%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,356 GBP at Blue Nile · As of November 3, 2026
View at Blue Nile

About this 1.25ct lab-grown radiant diamond

This 1.25ct 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 standard cut grade and certified by IGI. Listed at 5 retailers as of November 2, 2026, with prices from £174 to £1,356, a £1,181 spread on the same certified stone. Blue Nile lists it at £1,356. 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

1.25
Carat
D
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.48 × 5.12 × 3.74 mm
L/W Ratio1.46
Top View
7.48 mm5.12 mm1.25 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 67.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 73.0%

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: £1,356 GBP|Low: £174 GBP|High: £1,963 GBP|Avg: £870 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 2£174 GBP
Retailer 5£202 GBP
Retailer 3£396 GBP
Retailer 4£767 GBP
Blue Nile£1,356 GBP
Retailer 6£1,963 GBP

12 data points across 6 retailers

5 retailers£174 GBP to £1,356 GBP

A
Cheapest Retailer
-
£174 GBP
$234 USD
A
Retailer 2
-
£202 GBP
$271 USD
View
B+
Retailer 3
-
£396 GBP
$531 USD
View
B
Retailer 4
-
£767 GBP
$1,029 USD
View
Most Expensive
C
Blue Nile
30353582 · Nov 3
£1,356 GBP
$1,819 USD
View
4 more retailers have this diamond
Prices start from £174 GBPSave up to £1,181 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
1.25ct Radiant
£174 GBP