Radiant|Lab Grown|IGI

0.73ct E VS1 Radiant Lab Grown Diamond

ID • E/VS1 • IGI LG639405900

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG639405900

Diamond specifications and retailer prices

From £154 GBP
$205 USD
As of October 30, 2026
Save £187 GBP (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £915 GBP at MOH London · As of October 11, 2026
View at MOH London

About this 0.73ct lab-grown radiant diamond

This 0.73ct lab-grown radiant sits in the half to three-quarter carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG639405900 or 639405900. Listed at 17 retailers as of October 29, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.73
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle40.2°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639405900
Dimensions6.19 × 4.56 × 3.13 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.19 mm4.56 mm0.73 ctE / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG639405900
Side View
Table 64.0%Crown 40.2°Girdle: THN-MEDPavilion 35.6°Culet: NoneDepth 68.6%

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: Oct 30
Current: £915 GBP|Low: £68 GBP|High: £915 GBP|Avg: £330 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 23, 2026
Retailer 9£97 GBP
Retailer 11£154 GBP
Retailer 12£193 GBP
Retailer 7£194 GBP
Retailer 6£211 GBP
Retailer 2£219 GBP
Retailer 8£243 GBP
Retailer 10£349 GBP
Retailer 3£391 GBP
Retailer 5£428 GBP
Retailer 4£696 GBP
MOH London£915 GBP

24 data points across 12 retailers

17 retailers£154 GBP to £340 GBP

Retailer 1
-
£87 GBP
$116 USD
Price last confirmed 21 days ago
Retailer 2
-
£101 GBP
$135 USD
View
Price last confirmed 32 days ago
Retailer 3
-
£114 GBP
$152 USD
View
Price last confirmed 32 days ago
Retailer 4
-
£115 GBP
$153 USD
View
Price last confirmed 25 days ago
Retailer 5
-
£115 GBP
$153 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£154 GBP
$205 USD
View
Retailer 7
-
£193 GBP
$257 USD
View
Price last confirmed 14 days ago
Retailer 8
-
£194 GBP
ZAR 4,175 ZAR
View
Price last confirmed 17 days ago
Retailer 9
-
£211 GBP
View
Price last confirmed 17 days ago
A
Retailer 10
-
£219 GBP
€278 EUR
View
Retailer 11
-
£243 GBP
View
Price last confirmed 18 days ago
B+
Retailer 12
-
£340 GBP
View
Retailer 13
-
£349 GBP
$465 USD
View
Price last confirmed 15 days ago
Retailer 14
-
£391 GBP
$521 USD
View
Price last confirmed 15 days ago
Retailer 15
-
£428 GBP
$570 USD
View
Price last confirmed 11 days ago
Retailer 16
-
£696 GBP
$926 USD
View
Price last confirmed 16 days ago
Most Expensive
MOH London
LG639405900 · Oct 11
£915 GBP
View
Price last confirmed 19 days ago
16 more retailers have this diamond
Prices start from £154 GBPSave up to £187 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
£154 GBP