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Oval|Lab Grown|IGI

1.00ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG514264255

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG514264255

Diamond specifications and retailer prices

From £418 GBP
$560 USD
As of November 2, 2026
Save £979 GBP (70%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,537 GBP at NZ Jewellers · As of October 31, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514264255 or 514264255. Listed at 12 retailers as of November 2, 2026, with a 234% 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514264255
Dimensions7.89 × 5.87 × 3.54 mm
L/W Ratio1.34
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
7.89 mm5.87 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514264255
Side View
Table 62.5%Crown 32.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.3%

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: Nov 2
Current: £873 GBP|Low: £418 GBP|High: £2,332 GBP|Avg: £866 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3£418 GBP
Retailer 7£472 GBP
Retailer 10£528 GBP
Retailer 2£547 GBP
Retailer 8£547 GBP
Retailer 4£679 GBP
Retailer 1£873 GBP
Retailer 9£893 GBP
Retailer 6£1,397 GBP
Retailer 5£2,307 GBP

42 data points across 10 retailers

12 retailers£418 GBP to £1,397 GBP

B+
Cheapest Retailer
-
£418 GBP
$560 USD
B+
Retailer 2
-
£472 GBP
$632 USD
View
B+
Retailer 3
-
£513 GBP
$687 USD
View
B+
Retailer 4
-
£528 GBP
$707 USD
View
Final sale: no returns
B+
Retailer 5
-
£547 GBP
$733 USD
View
Retailer 6
-
£547 GBP
$733 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£679 GBP
$910 USD
View
B
Retailer 8
-
£873 GBP
View
B
Retailer 9
-
£893 GBP
$1,197 USD
View
B
Retailer 10
-
£1,397 GBP
$1,872 USD
View
Most Expensive
NZ Jewellers
99ddc6d7-697b-4979-8a01-1b63bc1dccda · Oct 31
£1,537 GBP
$2,060 USD
View
Price under review
10 more retailers have this diamond
Prices start from £418 GBPSave up to £979 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
£418 GBP