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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1569467255

Certificate GIA 1569467255

Diamond specifications and retailer prices

From £970 GBP
As of November 4, 2026
Save £1,252 GBP (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,005 GBP at NZ Jewellers · As of October 11, 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 top-tier cut grade and certified by GIA 1569467255. Listed at 20 retailers as of November 4, 2026, with a 129% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1569467255
Dimensions6.32 × 6.36 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.32 mm6.36 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1569467255
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,217 GBP|Low: £903 GBP|High: £3,089 GBP|Avg: £1,280 GBP|+3.5%
Retailer 1
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
Retailer 19
Retailer 20
November 6, 2026
Retailer 9£946 GBP
Retailer 2£970 GBP
Retailer 17£984 GBP
Retailer 4£1,064 GBP
Retailer 13£1,067 GBP
Retailer 6£1,068 GBP
Retailer 3£1,109 GBP
Retailer 16£1,152 GBP
Retailer 18£1,205 GBP
Retailer 1£1,217 GBP
Retailer 10£1,232 GBP
Retailer 11£1,271 GBP
Retailer 19£1,329 GBP
Retailer 5£1,360 GBP
Retailer 7£1,360 GBP
Retailer 12£1,404 GBP
Retailer 8£1,404 GBP
Retailer 20£1,548 GBP
Retailer 14£1,613 GBP
Retailer 15£2,222 GBP

27 data points across 20 retailers

20 retailers£970 GBP to £2,222 GBP

Retailer 1
-
£946 GBP
Price last confirmed 23 days ago
A
Retailer 2
-
£970 GBP
View
A
Retailer 3
-
£984 GBP
View
A
Retailer 4
-
£1,064 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,068 GBP
View
A
Retailer 6
-
£1,109 GBP
View
A
Retailer 7
-
£1,152 GBP
View
B+
Retailer 8
-
£1,205 GBP
View
A
Retailer 9
-
£1,217 GBP
View
Retailer 10
-
£1,232 GBP
View
Price last confirmed 25 days ago
Retailer 11
-
£1,271 GBP
View
Price last confirmed 22 days ago
B+
Retailer 12
-
£1,329 GBP
View
B+
Retailer 13
-
£1,360 GBP
View
B+
Retailer 14
-
£1,360 GBP
View
B+
Retailer 15
-
£1,404 GBP
View
B+
Retailer 16
-
£1,404 GBP
View
B
Retailer 17
-
£1,548 GBP
View
B+
Retailer 18
-
£1,613 GBP
View
B
Retailer 19
-
£2,222 GBP
View
Most Expensive
NZ Jewellers
18c832b7-0cae-4bb5-a2ea-71ab1c5be941 · Oct 11
£3,005 GBP
$4,045 USD
View
Price last confirmed 26 days ago
19 more retailers have this diamond
Prices start from £970 GBPSave up to £1,252 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
£970 GBP