CaratHunter
Plans
Radiant|Lab Grown|IGI

1.03ct I VS1 Radiant Lab Grown Diamond

EX • I/VS1 • IGI LG589310631

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

Certificate IGI LG589310631

Diamond specifications and retailer prices

From £203 GBP
$270 USD
As of October 28, 2026
Save £499 GBP (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £702 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG589310631 or 589310631. Listed at 6 retailers as of October 28, 2026, with prices from £203 to £702, a £499 spread on the same certified stone. MOH London lists it at £702. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589310631
Dimensions7.57 × 5.00 × 3.15 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.57 mm5.00 mm1.03 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589310631
Side View
Table 67.0%Crown 37.3°Girdle: Slightly ThickPavilion 31.6°Culet: NoneDepth 63.0%

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: Oct 28
Current: £702 GBP|Low: £203 GBP|High: £707 GBP|Avg: £380 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3£203 GBP
Retailer 5£227 GBP
Retailer 2£268 GBP
Retailer 4£389 GBP
Retailer 6£522 GBP
MOH London£702 GBP

11 data points across 6 retailers

6 retailers£203 GBP to £702 GBP

B+
Cheapest Retailer
-
£203 GBP
$270 USD
A
Retailer 2
-
£227 GBP
$301 USD
View
A
Retailer 3
-
£268 GBP
€339 EUR
View
B+
Retailer 4
-
£389 GBP
$517 USD
View
B
Retailer 5
-
£522 GBP
$694 USD
View
Most Expensive
B
MOH London
LG589310631 · Oct 29
£702 GBP
View
5 more retailers have this diamond
Prices start from £203 GBPSave up to £499 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
1.03ct Radiant
£203 GBP