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Oval|Natural|GIA

1.00ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 6381649278

Certificate GIA 6381649278

Diamond specifications and retailer prices

From £635 GBP
As of November 6, 2026
Save £1,619 GBP (72%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,254 GBP at Adiamor · As of November 5, 2026
View at Adiamor

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6381649278. Listed at 17 retailers as of November 5, 2026, with prices from £635 to £2,254, a £1,619 spread on the same certified stone. Adiamor lists it at £2,254. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6381649278
Dimensions7.28 × 5.56 × 3.65 mm
L/W Ratio1.31
Top View
7.28 mm5.56 mm1.00 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6381649278
Side View
Table 54.0%CrownGirdle: ThickPavilionCulet: NoneDepth 65.6%

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: £635 GBP|Low: £635 GBP|High: £1,673 GBP|Avg: £999 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1£635 GBP
Retailer 9£650 GBP
Retailer 5£863 GBP
Retailer 6£864 GBP
Retailer 8£937 GBP
Retailer 7£1,000 GBP
Retailer 3£1,019 GBP
Retailer 2£1,254 GBP
Retailer 4£1,647 GBP

41 data points across 9 retailers

17 retailers£635 GBP to £2,254 GBP

A
Cheapest Retailer
-
£635 GBP
B+
Retailer 2
-
£650 GBP
View
B+
Retailer 3
-
£863 GBP
View
B+
Retailer 4
-
£864 GBP
View
B+
Retailer 5
-
£903 GBP
View
Retailer 6
-
£903 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£903 GBP
View
B+
Retailer 8
-
£907 GBP
View
B+
Retailer 9
-
£937 GBP
View
B+
Retailer 10
-
£950 GBP
View
B+
Retailer 11
-
£1,000 GBP
View
B+
Retailer 12
-
£1,019 GBP
View
B+
Retailer 13
-
£1,041 GBP
View
B+
Retailer 14
-
£1,254 GBP
View
B
Retailer 15
-
£1,647 GBP
View
C
Retailer 16
-
£2,201 GBP
View
Most Expensive
C
Adiamor
D-51264212 · Nov 5
£2,254 GBP
$3,017 USD
View
16 more retailers have this diamond
Prices start from £635 GBPSave up to £1,619 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
£635 GBP