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Oval|Lab Grown|IGI

1.00ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG497145121

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497145121

Diamond specifications and retailer prices

From £508 GBP
$677 USD
As of October 29, 2026
Save £452 GBP (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,658 GBP at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497145121 or 497145121. Listed at 12 retailers as of October 28, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497145121
Dimensions8.14 × 5.60 × 3.49 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
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
8.14 mm5.60 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497145121
Side View
Table 55.0%Crown 34.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.3%

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: Oct 29
Current: £941 GBP|Low: £372 GBP|High: £2,518 GBP|Avg: £852 GBP|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 3£372 GBP
Retailer 7£508 GBP
Retailer 11£568 GBP
Retailer 2£589 GBP
Retailer 9£589 GBP
Retailer 8£683 GBP
Retailer 5£725 GBP
Retailer 1£941 GBP
Retailer 10£960 GBP
Retailer 6£1,506 GBP
Retailer 4£2,498 GBP

42 data points across 11 retailers

12 retailers£508 GBP to £960 GBP

B+
Cheapest Retailer
-
£508 GBP
$677 USD
B
Retailer 2
-
£553 GBP
$737 USD
View
B
Retailer 3
-
£568 GBP
$757 USD
View
Final sale: no returns
B
Retailer 4
-
£589 GBP
$785 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
£589 GBP
$785 USD
View
B
Retailer 6
-
£683 GBP
$910 USD
View
B
Retailer 7
-
£725 GBP
$965 USD
View
B
Retailer 8
-
£941 GBP
View
B
Retailer 9
-
£960 GBP
$1,279 USD
View
B
Retailer 10
-
£1,506 GBP
$2,006 USD
View
Price under review
Most Expensive
B
NZ Jewellers
a138cbf6-82d7-4729-9991-1ca35600ba41 · Oct 28
£1,658 GBP
$2,208 USD
View
Price under review
10 more retailers have this diamond
Prices start from £508 GBPSave up to £452 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+
1.00ct Oval
£508 GBP