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Oval|Natural|GIA

1.00ct E SI2 Oval Natural Diamond

ID • E/SI2 • GIA 1558290450

Certificate GIA 1558290450

Diamond specifications and retailer prices

From £1,425 GBP
As of November 6, 2026
Save £941 GBP (40%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,963 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558290450. Listed at 17 retailers as of November 2, 2026, with a 66% 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558290450
Dimensions7.88 × 5.68 × 3.54 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural
Top View
7.88 mm5.68 mm1.00 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1558290450
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

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: £1,487 GBP|Low: £1,415 GBP|High: £3,576 GBP|Avg: £2,157 GBP|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£1,425 GBP
Retailer 1£1,487 GBP
Retailer 6£1,671 GBP
Retailer 11£1,749 GBP
Retailer 4£1,982 GBP
Retailer 2£2,001 GBP
Retailer 5£2,006 GBP
Retailer 3£2,099 GBP
Retailer 7£2,366 GBP
Retailer 9£3,339 GBP
Retailer 10£3,567 GBP

32 data points across 11 retailers

17 retailers£1,425 GBP to £2,366 GBP

A
Cheapest Retailer
-
£1,425 GBP
A
Retailer 2
-
£1,487 GBP
View
A
Retailer 3
-
£1,671 GBP
View
A
Retailer 4
-
£1,749 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,774 GBP
View
Retailer 6
-
£1,895 GBP
View
Price last confirmed 21 days ago
Retailer 7
-
£1,895 GBP
View
Price last confirmed 19 days ago
A
Retailer 8
-
£1,982 GBP
View
Retailer 9
-
£1,984 GBP
View
Price last confirmed 21 days ago
A
Retailer 10
-
£2,001 GBP
View
A
Retailer 11
-
£2,006 GBP
View
B+
Retailer 12
-
£2,099 GBP
View
Retailer 13
-
£2,188 GBP
View
Price last confirmed 19 days ago
B+
Retailer 14
-
£2,366 GBP
View
Retailer 15
-
£3,339 GBP
View
Price last confirmed 8 days ago
Retailer 16
-
£3,567 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
80d6f991-f540-4536-a43b-6cf318c90136 · Oct 17
£3,963 GBP
$5,305 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from £1,425 GBPSave up to £941 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
£1,425 GBP