Round|Natural|GIA

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6535298687

Certificate GIA 6535298687

Diamond specifications and retailer prices

From £1,693 GBP
As of November 5, 2026
Save £2,535 GBP (60%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,340 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535298687. Listed at 19 retailers as of November 5, 2026, with a 150% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6535298687
Dimensions6.52 × 6.49 × 3.97 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.52 mm6.49 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535298687
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.2%

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 5
Current: £4,228 GBP|Low: £1,683 GBP|High: £4,340 GBP|Avg: £2,386 GBP|-2.6%
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
November 6, 2026
Retailer 11£1,693 GBP
Retailer 4£1,811 GBP
Retailer 13£1,861 GBP
Retailer 7£1,866 GBP
Retailer 16£1,991 GBP
Retailer 3£2,022 GBP
Retailer 14£2,022 GBP
Retailer 6£2,100 GBP
Retailer 2£2,127 GBP
Retailer 15£2,127 GBP
Retailer 5£2,279 GBP
Retailer 8£2,326 GBP
Retailer 9£2,368 GBP
Retailer 10£2,468 GBP
Retailer 12£3,534 GBP
NZ Jewellers£4,228 GBP

45 data points across 16 retailers

19 retailers£1,693 GBP to £4,228 GBP

A
Cheapest Retailer
-
£1,693 GBP
A
Retailer 2
-
£1,811 GBP
View
Retailer 3
-
£1,861 GBP
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£1,866 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,991 GBP
View
B+
Retailer 6
-
£2,022 GBP
View
Retailer 7
-
£2,022 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£2,076 GBP
View
Price last confirmed 39 days ago
B+
Retailer 9
-
£2,100 GBP
View
B+
Retailer 10
-
£2,127 GBP
View
B+
Retailer 11
-
£2,127 GBP
View
B+
Retailer 12
-
£2,279 GBP
View
Retailer 13
-
£2,326 GBP
View
Price last confirmed 30 days ago
B+
Retailer 14
-
£2,368 GBP
View
Retailer 15
-
£2,395 GBP
View
Price last confirmed 38 days ago
B+
Retailer 16
-
£2,468 GBP
View
B
Retailer 17
-
£3,534 GBP
View
B
Retailer 18
-
£4,228 GBP
View
Most Expensive
NZ Jewellers
6c868698-c8d6-4e5c-9af5-69f95fab10f2 · Sep 28
£4,340 GBP
$5,841 USD
View
Price last confirmed 39 days ago
18 more retailers have this diamond
Prices start from £1,693 GBPSave up to £2,535 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
£1,693 GBP