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Oval|Natural|GIA

1.00ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 2556153700

Certificate GIA 2556153700

Diamond specifications and retailer prices

From £564 GBP
As of November 1, 2026
Save £1,798 GBP (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,362 GBP at NZ Jewellers · As of November 2, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2556153700. Listed at 21 retailers as of November 1, 2026, with prices from £564 to £2,362, a £1,798 spread on the same certified stone. NZ Jewellers lists it at £2,362. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556153700
Dimensions7.93 × 5.61 × 3.30 mm
L/W Ratio1.41
Top View
7.93 mm5.61 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556153700
Side View
Table 65.0%CrownGirdle: Ext. ThickPavilionCulet: NDepth 58.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,362 GBP|Low: £554 GBP|High: £2,362 GBP|Avg: £948 GBP|+19.9%
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 4, 2026
Retailer 16£564 GBP
Retailer 2£725 GBP
Retailer 14£734 GBP
Retailer 8£737 GBP
Retailer 4£753 GBP
Retailer 6£753 GBP
Retailer 5£782 GBP
Retailer 10£808 GBP
Retailer 7£820 GBP
Retailer 12£840 GBP
Retailer 9£845 GBP
Retailer 3£853 GBP
Retailer 17£870 GBP
Retailer 13£874 GBP
Retailer 18£919 GBP
Retailer 11£1,054 GBP
Retailer 15£1,379 GBP
NZ Jewellers£2,362 GBP

25 data points across 18 retailers

21 retailers£564 GBP to £2,362 GBP

B+
Cheapest Retailer
-
£564 GBP
B+
Retailer 2
-
£725 GBP
View
B+
Retailer 3
-
£734 GBP
View
B+
Retailer 4
-
£737 GBP
View
B+
Retailer 5
-
£753 GBP
View
Retailer 6
-
£753 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£781 GBP
View
Price last confirmed 23 days ago
B+
Retailer 8
-
£782 GBP
View
Retailer 9
-
£808 GBP
View
Price last confirmed 11 days ago
B+
Retailer 10
-
£820 GBP
View
B+
Retailer 11
-
£840 GBP
View
B+
Retailer 12
-
£845 GBP
View
B+
Retailer 13
-
£853 GBP
View
B+
Retailer 14
-
£870 GBP
View
B+
Retailer 15
-
£874 GBP
View
Retailer 16
-
£900 GBP
View
Price last confirmed 23 days ago
B+
Retailer 17
-
£919 GBP
View
B+
Retailer 18
-
£1,054 GBP
View
B
Retailer 19
-
£1,379 GBP
View
Retailer 20
-
£1,904 GBP
View
Price last confirmed 23 days ago
Most Expensive
C
NZ Jewellers
d36076f9-1fb4-451d-80b3-87e4a3a32238 · Nov 2
£2,362 GBP
$3,162 USD
View
20 more retailers have this diamond
Prices start from £564 GBPSave up to £1,798 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.

B+
1.00ct Oval
£564 GBP