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Round|Natural|GIA

1.04ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2556968011

Certificate GIA 2556968011

Diamond specifications and retailer prices

From £1,284 GBP
As of November 4, 2026
Save £1,741 GBP (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,652 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.04ct natural round diamond

This 1.04ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556968011. Listed at 18 retailers as of November 4, 2026, with a 136% 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

1.04
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556968011
Dimensions6.46 × 6.42 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.46 mm6.42 mm1.04 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556968011
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.3%

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: £3,025 GBP|Low: £1,274 GBP|High: £3,097 GBP|Avg: £1,803 GBP|-1.1%
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
November 4, 2026
Retailer 12£1,284 GBP
Retailer 8£1,357 GBP
Retailer 9£1,360 GBP
Retailer 14£1,363 GBP
Retailer 2£1,447 GBP
Retailer 3£1,487 GBP
Retailer 16£1,553 GBP
Retailer 6£1,586 GBP
Retailer 19£1,625 GBP
Retailer 10£1,660 GBP
Retailer 13£1,664 GBP
Retailer 11£1,720 GBP
Retailer 17£1,779 GBP
Retailer 7£2,053 GBP
Retailer 4£2,128 GBP
Retailer 5£2,129 GBP
Retailer 18£2,482 GBP
Retailer 15£2,552 GBP
Retailer 1£3,025 GBP

20 data points across 19 retailers

18 retailers£1,284 GBP to £3,025 GBP

A
Cheapest Retailer
-
£1,284 GBP
A
Retailer 2
-
£1,360 GBP
View
A
Retailer 3
-
£1,363 GBP
View
B+
Retailer 4
-
£1,447 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,487 GBP
View
B+
Retailer 6
-
£1,553 GBP
View
B+
Retailer 7
-
£1,586 GBP
View
B+
Retailer 8
-
£1,625 GBP
View
B+
Retailer 9
-
£1,660 GBP
View
B+
Retailer 10
-
£1,664 GBP
View
B+
Retailer 11
-
£1,779 GBP
View
B
Retailer 12
-
£2,128 GBP
View
Retailer 13
-
£2,129 GBP
View
Price last confirmed 31 days ago
B
Retailer 14
-
£2,482 GBP
View
B
Retailer 15
-
£2,552 GBP
View
B
Retailer 16
-
£3,025 GBP
View
Retailer 17
-
£3,620 GBP
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
d07f9a38-9289-488e-a046-8ac94e7b981c · Sep 25
£3,652 GBP
$4,915 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from £1,284 GBPSave up to £1,741 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
1.04ct Round
£1,284 GBP