Round|Lab Grown|IGI

1.03ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG825630599

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825630599

Diamond specifications and retailer prices

From £270 GBP
$362 USD
As of November 1, 2026
Save £412 GBP (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £828 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round 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 LG825630599 or 825630599. Listed at 14 retailers as of October 27, 2026, with a 153% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825630599
Dimensions6.52 × 6.47 × 3.92 mm
L/W Ratio1.01
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.52 mm6.47 mm1.03 ctI / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG825630599
Side View
Table 62.0%Crown 36.3°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £828 GBP|Low: £128 GBP|High: £828 GBP|Avg: £381 GBP|+30.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9£180 GBP
Retailer 8£270 GBP
Retailer 5£287 GBP
Retailer 3£299 GBP
Retailer 4£330 GBP
Retailer 7£343 GBP
Retailer 6£381 GBP
Retailer 11£452 GBP
Retailer 2£513 GBP
Retailer 10£683 GBP
MOH London£828 GBP

40 data points across 11 retailers

14 retailers£270 GBP to £683 GBP

Retailer 1
-
£114 GBP
$153 USD
Price last confirmed 23 days ago
Retailer 2
-
£132 GBP
$177 USD
View
Price last confirmed 24 days ago
Retailer 3
-
£141 GBP
$189 USD
View
Price last confirmed 31 days ago
B+
Retailer 4
-
£270 GBP
$362 USD
View
B+
Retailer 5
-
£287 GBP
$385 USD
View
Retailer 6
-
£299 GBP
ZAR 6,480 ZAR
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£330 GBP
€421 EUR
View
B+
Retailer 8
-
£343 GBP
$460 USD
View
B+
Retailer 9
-
£381 GBP
$510 USD
View
B
Retailer 10
-
£452 GBP
View
Retailer 11
-
£455 GBP
$609 USD
View
Price last confirmed 32 days ago
B
Retailer 12
-
£513 GBP
$688 USD
View
B
Retailer 13
-
£683 GBP
$915 USD
View
Most Expensive
MOH London
LG825630599 · Oct 25
£828 GBP
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from £270 GBPSave up to £412 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.

B+
1.03ct Round
£270 GBP