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Oval|Natural|GIA

1.00ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 2558391525

Certificate GIA 2558391525

Diamond specifications and retailer prices

From £1,870 GBP
$2,506 USD
As of November 1, 2026
Save £2,549 GBP (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,420 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 G 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 2558391525. Listed at 18 retailers as of October 30, 2026, with prices from £1,870 to £4,420, a £2,549 spread on the same certified stone. NZ Jewellers lists it at £4,420. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.71°
OriginNatural
Grading LabGIA
CertificateGIA 2558391525
Dimensions8.37 × 5.38 × 3.44 mm
L/W Ratio1.56
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
8.37 mm5.38 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558391525
Side View
Table 53.0%Crown 35.71°GirdlePavilionCulet: NoneDepth 63.9%

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: Nov 1
Current: £4,420 GBP|Low: £1,798 GBP|High: £4,420 GBP|Avg: £2,398 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 1, 2026
Retailer 4£1,870 GBP
Retailer 5£1,893 GBP
Retailer 3£1,949 GBP
Retailer 8£1,951 GBP
Retailer 2£2,062 GBP
Retailer 7£2,071 GBP
Retailer 16£2,114 GBP
Retailer 18£2,114 GBP
Retailer 17£2,196 GBP
Retailer 15£2,220 GBP
Retailer 12£2,260 GBP
Retailer 10£2,381 GBP
Retailer 6£2,408 GBP
Retailer 9£2,439 GBP
Retailer 14£2,475 GBP
Retailer 13£2,599 GBP
Retailer 11£3,704 GBP
NZ Jewellers£4,420 GBP

32 data points across 18 retailers

18 retailers£1,870 GBP to £4,420 GBP

A
Cheapest Retailer
-
£1,870 GBP
$2,506 USD
A
Retailer 2
-
£1,893 GBP
$2,537 USD
View
B+
Retailer 3
-
£1,949 GBP
$2,611 USD
View
B+
Retailer 4
-
£1,951 GBP
$2,614 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,062 GBP
View
B+
Retailer 6
-
£2,071 GBP
$2,775 USD
View
B+
Retailer 7
-
£2,114 GBP
$2,833 USD
View
B+
Retailer 8
-
£2,114 GBP
$2,833 USD
View
B+
Retailer 9
-
£2,196 GBP
$2,942 USD
View
B+
Retailer 10
-
£2,220 GBP
$2,975 USD
View
B+
Retailer 11
-
£2,260 GBP
View
Retailer 12
-
£2,381 GBP
A$4,909 AUD
View
Price last confirmed 24 days ago
B
Retailer 13
-
£2,408 GBP
$3,227 USD
View
B
Retailer 14
-
£2,439 GBP
$3,268 USD
View
B
Retailer 15
-
£2,475 GBP
€3,158 EUR
View
B+
Retailer 16
-
£2,599 GBP
ZAR 56,250 ZAR
View
B
Retailer 17
-
£3,704 GBP
View
Most Expensive
B
NZ Jewellers
e5cfa52c-735d-43c2-ba40-497b118d569b · Oct 30
£4,420 GBP
$5,922 USD
View
17 more retailers have this diamond
Prices start from £1,870 GBPSave up to £2,549 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
£1,870 GBP