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Oval|Natural|GIA

1.00ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2557737366

Certificate GIA 2557737366

Diamond specifications and retailer prices

From £1,181 GBP
SGD 2,139 SGD
As of October 31, 2026
Save £2,130 GBP (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,311 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557737366. Listed at 11 retailers as of October 30, 2026, with prices from £1,181 to £3,311, a £2,130 spread on the same certified stone. NZ Jewellers lists it at £3,311. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2557737366
Dimensions5.52 × 8.06 × 3.47 mm
L/W Ratio1.46
Top View
5.52 mm8.06 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2557737366
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.9%

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: Oct 31
Current: £3,311 GBP|Low: £1,181 GBP|High: £3,570 GBP|Avg: £1,795 GBP|-7.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10£1,181 GBP
Retailer 2£1,234 GBP
Retailer 6£1,328 GBP
Retailer 9£1,420 GBP
Retailer 4£1,427 GBP
Retailer 5£1,499 GBP
Retailer 8£1,567 GBP
Retailer 3£1,737 GBP
Retailer 11£1,869 GBP
Retailer 7£2,391 GBP
NZ Jewellers£3,311 GBP

34 data points across 11 retailers

11 retailers£1,181 GBP to £3,311 GBP

A
Cheapest Retailer
-
£1,181 GBP
SGD 2,139 SGD
A
Retailer 2
-
£1,234 GBP
$1,654 USD
View
Final sale: no returns
A
Retailer 3
-
£1,328 GBP
View
A
Retailer 4
-
£1,420 GBP
$1,903 USD
View
A
Retailer 5
-
£1,427 GBP
$1,912 USD
View
A
Retailer 6
-
£1,499 GBP
View
Retailer 7
-
£1,515 GBP
$2,030 USD
View
Price last confirmed 37 days ago
B+
Retailer 8
-
£1,567 GBP
$2,100 USD
View
Retailer 9
-
£1,869 GBP
A$3,853 AUD
View
Price last confirmed 26 days ago
B+
Retailer 10
-
£2,391 GBP
View
Most Expensive
B
NZ Jewellers
bfc39d84-7378-4c6b-94f4-80733e981a3e · Oct 30
£3,311 GBP
$4,437 USD
View
10 more retailers have this diamond
Prices start from £1,181 GBPSave up to £2,130 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
£1,181 GBP