Radiant|Lab Grown|IGI

0.73ct D FL Radiant Lab Grown Diamond

VG • D/FL

Diamond specifications and retailer prices

From £140 GBP
As of November 4, 2026
Save £418 GBP (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,011 GBP at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 0.73ct lab-grown radiant diamond

This 0.73ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI. Listed at 9 retailers as of November 4, 2026, with a 298% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.73
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions6.42 × 4.52 × 2.90 mm
L/W Ratio1.42
Top View
6.42 mm4.52 mm0.73 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MediumPavilionCuletDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,011 GBP|Low: £140 GBP|High: £1,011 GBP|Avg: £386 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 3£140 GBP
Retailer 6£165 GBP
Retailer 4£174 GBP
Retailer 5£176 GBP
Retailer 2£559 GBP
Helzberg Diamonds£1,011 GBP

21 data points across 6 retailers

9 retailers£140 GBP to £559 GBP

A
Cheapest Retailer
-
£140 GBP
Retailer 2
-
£142 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£165 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£174 GBP
View
Retailer 5
-
£176 GBP
View
Price last confirmed 10 days ago
Retailer 6
-
£176 GBP
View
Price last confirmed 10 days ago
B
Retailer 7
-
£559 GBP
View
Retailer 8
-
£567 GBP
View
Price last confirmed 10 days ago
Most Expensive
Helzberg Diamonds
ZXZNOMMNMLHH · Oct 13
£1,011 GBP
$1,356 USD
View
Price last confirmed 22 days ago
8 more retailers have this diamond
Prices start from £140 GBPSave up to £418 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
0.73ct Radiant
£140 GBP