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Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 6501640651

Certificate GIA 6501640651

Diamond specifications and retailer prices

From £897 GBP
As of November 6, 2026
Save £2,174 GBP (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,071 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6501640651. Listed at 17 retailers as of November 5, 2026, with prices from £897 to £3,071, a £2,174 spread on the same certified stone. NZ Jewellers lists it at £3,071. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6501640651
Dimensions8.16 × 5.34 × 3.42 mm
L/W Ratio1.53
Top View
8.16 mm5.34 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501640651
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.1%

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: £897 GBP|Low: £897 GBP|High: £1,538 GBP|Avg: £1,245 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£897 GBP
Retailer 5£917 GBP
Retailer 8£1,180 GBP
Retailer 2£1,222 GBP
Retailer 6£1,230 GBP
Retailer 3£1,271 GBP
Retailer 4£1,520 GBP
Retailer 7£1,528 GBP

34 data points across 8 retailers

17 retailers£897 GBP to £3,071 GBP

A
Cheapest Retailer
-
£897 GBP
A
Retailer 2
-
£917 GBP
View
B+
Retailer 3
-
£1,114 GBP
View
B+
Retailer 4
-
£1,148 GBP
View
B+
Retailer 5
-
£1,180 GBP
View
B+
Retailer 6
-
£1,222 GBP
View
B+
Retailer 7
-
£1,230 GBP
View
Retailer 8
-
£1,260 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,260 GBP
View
B+
Retailer 10
-
£1,271 GBP
View
B+
Retailer 11
-
£1,311 GBP
View
B+
Retailer 12
-
£1,317 GBP
View
B+
Retailer 13
-
£1,387 GBP
View
B
Retailer 14
-
£1,453 GBP
View
B+
Retailer 15
-
£1,520 GBP
View
B
Retailer 16
-
£2,457 GBP
View
Most Expensive
C
NZ Jewellers
b207e61f-dc65-427a-bf81-52655f8bc27c · Nov 5
£3,071 GBP
$4,111 USD
View
16 more retailers have this diamond
Prices start from £897 GBPSave up to £2,174 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
£897 GBP