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Round|Natural|GIA

1.00ct J VS1 Round Natural Diamond

EX • J/VS1 • GIA 5242085724

Certificate GIA 5242085724

Diamond specifications and retailer prices

From £1,293 GBP
As of November 4, 2026
Save £2,392 GBP (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,685 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 5242085724. Listed at 12 retailers as of November 4, 2026, with prices from £1,293 to £3,685, a £2,392 spread on the same certified stone. NZ Jewellers lists it at £3,685. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5242085724
Dimensions6.38 × 6.43 × 3.90 mm
L/W Ratio1.01
Key to symbols
Crystal, Needle
Top View
6.38 mm6.43 mm1.00 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242085724
Side View
Table 60.0%CrownGirdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.9%

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 4
Current: £3,685 GBP|Low: £1,293 GBP|High: £3,796 GBP|Avg: £2,176 GBP|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12£1,293 GBP
Retailer 11£1,595 GBP
Retailer 5£1,640 GBP
Retailer 7£1,763 GBP
Retailer 6£1,803 GBP
Retailer 8£1,844 GBP
Retailer 3£1,932 GBP
Retailer 9£2,148 GBP
Retailer 2£2,173 GBP
Retailer 4£2,707 GBP
Retailer 10£3,088 GBP
NZ Jewellers£3,685 GBP

23 data points across 12 retailers

12 retailers£1,293 GBP to £3,685 GBP

A
Cheapest Retailer
-
£1,293 GBP
A
Retailer 2
-
£1,595 GBP
View
A
Retailer 3
-
£1,640 GBP
View
B+
Retailer 4
-
£1,763 GBP
View
B+
Retailer 5
-
£1,803 GBP
View
B+
Retailer 6
-
£1,844 GBP
View
B+
Retailer 7
-
£1,932 GBP
View
B+
Retailer 8
-
£2,148 GBP
View
B+
Retailer 9
-
£2,173 GBP
View
B
Retailer 10
-
£2,707 GBP
View
B
Retailer 11
-
£3,088 GBP
View
Most Expensive
B
NZ Jewellers
6d2e61a6-4c98-4afb-9819-804605a8737e · Nov 5
£3,685 GBP
$4,960 USD
View
11 more retailers have this diamond
Prices start from £1,293 GBPSave up to £2,392 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
£1,293 GBP