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Oval|Lab Grown|IGI

1.00ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG451056241

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056241

Diamond specifications and retailer prices

From £433 GBP
As of November 6, 2026
Save £2,488 GBP (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,921 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1ct lab-grown oval diamond

This 1ct 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 LG451056241 or 451056241. Listed at 10 retailers as of November 3, 2026, with prices from £433 to £2,921, a £2,488 spread on the same certified stone. MOH London lists it at £2,921. 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

1.00
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056241
Dimensions8.42 × 5.54 × 3.35 mm
L/W Ratio1.52
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.42 mm5.54 mm1.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056241
Side View
Table 54.5%Crown 32.9°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.5%

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: £2,921 GBP|Low: £433 GBP|High: £2,957 GBP|Avg: £1,416 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 2£433 GBP
Retailer 4£743 GBP
Retailer 6£994 GBP
Retailer 7£1,240 GBP
Retailer 5£1,376 GBP
Retailer 3£1,857 GBP
MOH London£2,921 GBP

13 data points across 7 retailers

10 retailers£433 GBP to £2,921 GBP

A
Cheapest Retailer
-
£433 GBP
B+
Retailer 2
-
£743 GBP
View
B+
Retailer 3
-
£808 GBP
View
B+
Retailer 4
-
£861 GBP
View
Retailer 5
-
£861 GBP
View
Price last confirmed 25 days ago
B
Retailer 6
-
£994 GBP
View
B
Retailer 7
-
£1,376 GBP
View
B
Retailer 8
-
£1,615 GBP
View
B
Retailer 9
-
£1,857 GBP
View
Most Expensive
B
MOH London
LG451056241 · Nov 3
£2,921 GBP
View
9 more retailers have this diamond
Prices start from £433 GBPSave up to £2,488 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
1.00ct Oval
£433 GBP