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Oval|Natural|GIA

1.00ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 2566135453

Certificate GIA 2566135453

Diamond specifications and retailer prices

From £1,375 GBP
As of November 6, 2026
Save £2,141 GBP (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,517 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566135453. Listed at 18 retailers as of November 5, 2026, with prices from £1,375 to £3,517, a £2,141 spread on the same certified stone. NZ Jewellers lists it at £3,517. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566135453
Dimensions7.94 × 5.63 × 3.42 mm
L/W Ratio1.41
Girdle conditionSlightly Thick to Very Thick
Key to symbols
Twinning Wisp, Knot, Feather, Crystal, Needle
Top View
7.94 mm5.63 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566135453
Side View
Table 62.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 60.7%

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: £3,517 GBP|Low: £1,267 GBP|High: £3,517 GBP|Avg: £1,872 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 4£1,375 GBP
Retailer 3£1,390 GBP
Retailer 6£1,398 GBP
Retailer 16£1,407 GBP
Retailer 12£1,524 GBP
Retailer 13£1,594 GBP
Retailer 2£1,654 GBP
Retailer 8£1,665 GBP
Retailer 18£1,688 GBP
Retailer 14£1,759 GBP
Retailer 7£1,786 GBP
Retailer 17£1,786 GBP
Retailer 9£1,845 GBP
Retailer 11£1,845 GBP
Retailer 10£1,957 GBP
Retailer 5£2,441 GBP
Retailer 15£2,947 GBP
NZ Jewellers£3,517 GBP

37 data points across 18 retailers

18 retailers£1,375 GBP to £3,517 GBP

A
Cheapest Retailer
-
£1,375 GBP
A
Retailer 2
-
£1,390 GBP
View
A
Retailer 3
-
£1,398 GBP
View
A
Retailer 4
-
£1,407 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,524 GBP
View
A
Retailer 6
-
£1,594 GBP
View
B+
Retailer 7
-
£1,654 GBP
View
B+
Retailer 8
-
£1,665 GBP
View
B+
Retailer 9
-
£1,688 GBP
View
B+
Retailer 10
-
£1,759 GBP
View
B+
Retailer 11
-
£1,786 GBP
View
B+
Retailer 12
-
£1,786 GBP
View
B+
Retailer 13
-
£1,845 GBP
View
B+
Retailer 14
-
£1,845 GBP
View
B+
Retailer 15
-
£1,957 GBP
View
B
Retailer 16
-
£2,441 GBP
View
B
Retailer 17
-
£2,947 GBP
View
Most Expensive
B
NZ Jewellers
0b1de0a0-c29c-4937-aed3-ece1a3d28494 · Nov 5
£3,517 GBP
$4,707 USD
View
17 more retailers have this diamond
Prices start from £1,375 GBPSave up to £2,141 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
£1,375 GBP