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Oval|Lab Grown|IGI

1.03ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG407945422

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407945422

Diamond specifications and retailer prices

From £448 GBP
As of November 6, 2026
Save £2,550 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,998 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.03ct lab-grown oval diamond

This 1.03ct lab-grown oval sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407945422 or 407945422. Listed at 11 retailers as of November 5, 2026, with prices from £448 to £2,998, a £2,550 spread on the same certified stone. MOH London lists it at £2,998. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.03
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407945422
Dimensions8.04 × 5.67 × 3.56 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.04 mm5.67 mm1.03 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407945422
Side View
Table 58.0%Crown 35°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.8%

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: Nov 6
Current: £2,998 GBP|Low: £448 GBP|High: £3,043 GBP|Avg: £1,388 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2£448 GBP
Retailer 4£764 GBP
Retailer 7£855 GBP
Retailer 5£887 GBP
Retailer 8£887 GBP
Retailer 9£1,016 GBP
Retailer 11£1,272 GBP
Retailer 6£1,414 GBP
Retailer 10£1,853 GBP
Retailer 3£2,538 GBP
MOH London£2,998 GBP

12 data points across 11 retailers

11 retailers£448 GBP to £2,998 GBP

A
Cheapest Retailer
-
£448 GBP
B+
Retailer 2
-
£764 GBP
View
B+
Retailer 3
-
£832 GBP
View
B+
Retailer 4
-
£855 GBP
View
Final sale: no returns
Retailer 5
-
£887 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£887 GBP
View
B
Retailer 7
-
£1,016 GBP
View
B
Retailer 8
-
£1,414 GBP
View
B
Retailer 9
-
£1,662 GBP
View
B
Retailer 10
-
£1,853 GBP
View
Most Expensive
B
MOH London
LG407945422 · Nov 5
£2,998 GBP
View
10 more retailers have this diamond
Prices start from £448 GBPSave up to £2,550 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 Oval
£448 GBP