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Round|Natural|GIA

1.00ct J IF Round Natural Diamond

VG • J/IF • GIA 2566326143

Certificate GIA 2566326143

Diamond specifications and retailer prices

From £1,435 GBP
As of November 6, 2026
Save £2,647 GBP (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,083 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by GIA 2566326143. Listed at 21 retailers as of November 5, 2026, with prices from £1,435 to £4,083, a £2,647 spread on the same certified stone. NZ Jewellers lists it at £4,083. 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
J
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566326143
Dimensions6.15 × 6.23 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.15 mm6.23 mm1.00 ctJ / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2566326143
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.5%

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: £4,083 GBP|Low: £1,435 GBP|High: £4,083 GBP|Avg: £2,235 GBP
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 6, 2026
Retailer 18£1,435 GBP
Retailer 3£1,635 GBP
Retailer 4£1,735 GBP
Retailer 2£1,739 GBP
Retailer 6£1,802 GBP
Retailer 15£1,806 GBP
Retailer 16£1,882 GBP
Retailer 9£1,953 GBP
Retailer 11£1,998 GBP
Retailer 5£2,028 GBP
Retailer 8£2,112 GBP
Retailer 10£2,187 GBP
Retailer 7£2,253 GBP
Retailer 13£2,288 GBP
Retailer 14£2,384 GBP
Retailer 12£2,420 GBP
Retailer 17£3,412 GBP
NZ Jewellers£4,083 GBP

34 data points across 18 retailers

21 retailers£1,435 GBP to £4,083 GBP

A
Cheapest Retailer
-
£1,435 GBP
A
Retailer 2
-
£1,635 GBP
View
A
Retailer 3
-
£1,735 GBP
View
A
Retailer 4
-
£1,739 GBP
View
A
Retailer 5
-
£1,749 GBP
View
A
Retailer 6
-
£1,802 GBP
View
Final sale: no returns
A
Retailer 7
-
£1,806 GBP
View
A
Retailer 8
-
£1,859 GBP
View
A
Retailer 9
-
£1,882 GBP
View
Retailer 10
-
£1,953 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,998 GBP
View
B+
Retailer 12
-
£2,028 GBP
View
B+
Retailer 13
-
£2,112 GBP
View
Retailer 14
-
£2,187 GBP
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£2,253 GBP
View
B+
Retailer 16
-
£2,288 GBP
View
B+
Retailer 17
-
£2,384 GBP
View
B+
Retailer 18
-
£2,420 GBP
View
B
Retailer 19
-
£2,767 GBP
View
B
Retailer 20
-
£3,412 GBP
View
Most Expensive
B
NZ Jewellers
83d65181-e5ed-40e9-a737-63b708438e18 · Nov 5
£4,083 GBP
$5,495 USD
View
20 more retailers have this diamond
Prices start from £1,435 GBPSave up to £2,647 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 Round
£1,435 GBP