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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 €241 EUR
As of October 30, 2026
Save €377 EUR (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €832 EUR 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 30, 2026, with a 157% 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

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 30
Current: €832 EUR|Low: €241 EUR|High: €837 EUR|Avg: €450 EUR|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3€241 EUR
Retailer 5€268 EUR
Retailer 2€306 EUR
Retailer 4€461 EUR
Retailer 6€617 EUR
MOH London€832 EUR

12 data points across 6 retailers

6 retailers€241 EUR to €617 EUR

B+
Cheapest Retailer
-
€241 EUR
A
Retailer 2
-
€268 EUR
View
A
Retailer 3
-
€306 EUR
View
B+
Retailer 4
-
€461 EUR
View
B
Retailer 5
-
€617 EUR
View
Most Expensive
MOH London
LG589310631 · Oct 29
€832 EUR
£735 GBP
View
Price last confirmed 7 days ago
5 more retailers have this diamond
Prices start from €241 EURSave up to €377 EUR

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
€241 EUR