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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 6201522226

Certificate GIA 6201522226

Diamond specifications and retailer prices

From £979 GBP
As of November 6, 2026
Save £2,251 GBP (70%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,231 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6201522226. Listed at 17 retailers as of November 5, 2026, with prices from £979 to £3,231, a £2,251 spread on the same certified stone. NZ Jewellers lists it at £3,231. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6201522226
Dimensions6.36 × 6.33 × 3.97 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.36 mm6.33 mm1.00 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6201522226
Side View
Table 60.0%Crown 36°Girdle: ThickPavilion 41°Culet: NoneDepth 62.5%

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: £3,231 GBP|Low: £970 GBP|High: £3,231 GBP|Avg: £1,494 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
November 6, 2026
Retailer 14£979 GBP
Retailer 5£1,060 GBP
Retailer 8£1,129 GBP
Retailer 4£1,222 GBP
Retailer 2£1,267 GBP
Retailer 6£1,291 GBP
Retailer 3£1,325 GBP
Retailer 15£1,325 GBP
Retailer 9£1,337 GBP
Retailer 10£1,365 GBP
Retailer 16£1,386 GBP
Retailer 7£1,426 GBP
Retailer 11£1,461 GBP
Retailer 17£1,528 GBP
Retailer 12£1,795 GBP
Retailer 13£2,314 GBP
NZ Jewellers£3,231 GBP

33 data points across 17 retailers

17 retailers£979 GBP to £3,231 GBP

A
Cheapest Retailer
-
£979 GBP
B+
Retailer 2
-
£1,060 GBP
View
B+
Retailer 3
-
£1,207 GBP
View
B+
Retailer 4
-
£1,222 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,267 GBP
View
B+
Retailer 6
-
£1,291 GBP
View
B+
Retailer 7
-
£1,325 GBP
View
Retailer 8
-
£1,325 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£1,337 GBP
View
Price last confirmed 22 days ago
B+
Retailer 10
-
£1,365 GBP
View
B+
Retailer 11
-
£1,386 GBP
View
B+
Retailer 12
-
£1,426 GBP
View
B+
Retailer 13
-
£1,461 GBP
View
B+
Retailer 14
-
£1,528 GBP
View
B
Retailer 15
-
£1,795 GBP
View
B
Retailer 16
-
£2,314 GBP
View
Most Expensive
B
NZ Jewellers
705ad050-b111-468a-a6ca-7d96b7576e1e · Nov 5
£3,231 GBP
$4,348 USD
View
16 more retailers have this diamond
Prices start from £979 GBPSave up to £2,251 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
£979 GBP