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Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 7558862357

Certificate GIA 7558862357

Diamond specifications and retailer prices

From £678 GBP
As of November 6, 2026
Save £1,049 GBP (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,829 GBP at NZ Jewellers · As of August 29, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558862357. Listed at 19 retailers as of November 2, 2026, with a 155% 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7558862357
Dimensions7.74 × 5.75 × 3.59 mm
L/W Ratio1.35
Top View
7.74 mm5.75 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558862357
Side View
Table 65.0%CrownGirdlePavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £888 GBP|Low: £678 GBP|High: £1,898 GBP|Avg: £1,094 GBP|-12.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£678 GBP
Retailer 10£878 GBP
Retailer 1£888 GBP
Retailer 3£904 GBP
Retailer 4£943 GBP
Retailer 6£946 GBP
Retailer 5£1,016 GBP
Retailer 8£1,035 GBP
Retailer 12£1,043 GBP
Retailer 9£1,118 GBP
Retailer 7£1,273 GBP
Retailer 2£1,727 GBP

29 data points across 12 retailers

19 retailers£678 GBP to £1,727 GBP

A
Cheapest Retailer
-
£678 GBP
A
Retailer 2
-
£878 GBP
View
A
Retailer 3
-
£888 GBP
View
A
Retailer 4
-
£904 GBP
View
Retailer 5
-
£943 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£946 GBP
View
Retailer 7
-
£997 GBP
View
Price last confirmed 23 days ago
Retailer 8
-
£997 GBP
View
Price last confirmed 21 days ago
A
Retailer 9
-
£1,016 GBP
View
A
Retailer 10
-
£1,035 GBP
View
B+
Retailer 11
-
£1,043 GBP
View
Retailer 12
-
£1,100 GBP
View
Price last confirmed 38 days ago
A
Retailer 13
-
£1,118 GBP
View
Retailer 14
-
£1,151 GBP
View
Price last confirmed 21 days ago
B+
Retailer 15
-
£1,273 GBP
View
Retailer 16
-
£1,338 GBP
View
Price last confirmed 66 days ago
B+
Retailer 17
-
£1,727 GBP
View
Retailer 18
-
£2,433 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
4352f312-12e2-44fe-bb16-8d92b19fbc38 · Aug 29
£2,829 GBP
$3,787 USD
View
Price last confirmed 69 days ago
18 more retailers have this diamond
Prices start from £678 GBPSave up to £1,049 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
£678 GBP