Round|Natural|GIA

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1463159846

Certificate GIA 1463159846

Diamond specifications and retailer prices

From £1,395 GBP
As of November 6, 2026
Save £1,877 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,914 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct 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 1463159846. Listed at 20 retailers as of November 4, 2026, with a 135% 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

1.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1463159846
Dimensions6.44 × 6.41 × 4.04 mm
L/W Ratio1.00
Top View
6.44 mm6.41 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1463159846
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 41°Culet: NoneDepth 63.1%

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: £1,395 GBP|Low: £1,395 GBP|High: £3,297 GBP|Avg: £1,985 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1£1,395 GBP
Retailer 8£1,691 GBP
Retailer 9£1,727 GBP
Retailer 2£1,728 GBP
Retailer 11£1,857 GBP
Retailer 10£1,872 GBP
Retailer 4£1,969 GBP
Retailer 3£2,097 GBP
Retailer 6£2,175 GBP
Retailer 5£2,285 GBP
Retailer 7£3,271 GBP

35 data points across 11 retailers

20 retailers£1,395 GBP to £3,271 GBP

A
Cheapest Retailer
-
£1,395 GBP
B+
Retailer 2
-
£1,642 GBP
View
B+
Retailer 3
-
£1,691 GBP
View
B+
Retailer 4
-
£1,721 GBP
View
B+
Retailer 5
-
£1,727 GBP
View
B+
Retailer 6
-
£1,728 GBP
View
Final sale: no returns
B
Retailer 7
-
£1,857 GBP
View
Retailer 8
-
£1,872 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£1,872 GBP
View
Price last confirmed 8 days ago
B
Retailer 10
-
£1,959 GBP
View
Retailer 11
-
£1,959 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£1,969 GBP
View
B
Retailer 13
-
£1,971 GBP
View
B
Retailer 14
-
£1,976 GBP
View
Retailer 15
-
£2,097 GBP
View
Price last confirmed 30 days ago
Retailer 16
-
£2,160 GBP
View
Price last confirmed 28 days ago
B
Retailer 17
-
£2,175 GBP
View
B
Retailer 18
-
£2,285 GBP
View
B
Retailer 19
-
£3,271 GBP
View
Most Expensive
NZ Jewellers
2639e771-64cc-48d7-8ed7-5616c4b1cef6 · Sep 28
£3,914 GBP
$5,268 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from £1,395 GBPSave up to £1,877 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
1.03ct Round
£1,395 GBP