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Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 6422573558

Certificate GIA 6422573558

Diamond specifications and retailer prices

From £914 GBP
As of November 6, 2026
Save £2,213 GBP (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,127 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 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 6422573558. Listed at 17 retailers as of November 5, 2026, with prices from £914 to £3,127, a £2,213 spread on the same certified stone. NZ Jewellers lists it at £3,127. 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
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6422573558
Dimensions7.54 × 5.71 × 3.36 mm
L/W Ratio1.32
Top View
7.54 mm5.71 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6422573558
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.9%

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 6
Current: £1,401 GBP|Low: £914 GBP|High: £2,269 GBP|Avg: £1,382 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£914 GBP
Retailer 6£927 GBP
Retailer 8£1,199 GBP
Retailer 9£1,341 GBP
Retailer 1£1,401 GBP
Retailer 3£1,422 GBP
Retailer 4£1,564 GBP
Retailer 7£1,750 GBP
Retailer 5£2,239 GBP

39 data points across 9 retailers

17 retailers£914 GBP to £3,127 GBP

A
Cheapest Retailer
-
£914 GBP
A
Retailer 2
-
£927 GBP
View
B+
Retailer 3
-
£1,191 GBP
View
B+
Retailer 4
-
£1,199 GBP
View
Retailer 5
-
£1,282 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,282 GBP
View
B+
Retailer 7
-
£1,294 GBP
View
B+
Retailer 8
-
£1,334 GBP
View
B+
Retailer 9
-
£1,341 GBP
View
B+
Retailer 10
-
£1,401 GBP
View
B+
Retailer 11
-
£1,422 GBP
View
B+
Retailer 12
-
£1,479 GBP
View
B
Retailer 13
-
£1,564 GBP
View
B
Retailer 14
-
£1,750 GBP
View
B
Retailer 15
-
£2,239 GBP
View
B
Retailer 16
-
£2,457 GBP
View
Most Expensive
C
NZ Jewellers
a0daa0b7-c253-4d3e-bdf8-a98d80c4287a · Nov 5
£3,127 GBP
$4,185 USD
View
16 more retailers have this diamond
Prices start from £914 GBPSave up to £2,213 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
£914 GBP