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Round|Natural|GIA

1.03ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6435443395

Certificate GIA 6435443395

Diamond specifications and retailer prices

From £1,078 GBP
As of October 31, 2026
Save £2,566 GBP (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,644 GBP at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6435443395. Listed at 18 retailers as of October 31, 2026, with prices from £1,078 to £3,644, a £2,566 spread on the same certified stone. NZ Jewellers lists it at £3,644. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6435443395
Dimensions6.53 × 6.50 × 3.99 mm
L/W Ratio1.00
Top View
6.53 mm6.50 mm1.03 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6435443395
Side View
Table 59.0%Crown 32°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.3%

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: Oct 31
Current: £1,509 GBP|Low: £1,074 GBP|High: £2,648 GBP|Avg: £1,540 GBP
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 7£1,078 GBP
Retailer 8£1,084 GBP
Retailer 10£1,350 GBP
Retailer 2£1,379 GBP
Retailer 11£1,389 GBP
Retailer 9£1,424 GBP
Retailer 1£1,509 GBP
Retailer 3£1,563 GBP
Retailer 4£1,603 GBP
Retailer 6£1,823 GBP
Retailer 5£2,609 GBP

44 data points across 11 retailers

18 retailers£1,078 GBP to £3,644 GBP

A
Cheapest Retailer
-
£1,078 GBP
A
Retailer 2
-
£1,084 GBP
View
A
Retailer 3
-
£1,310 GBP
View
A
Retailer 4
-
£1,350 GBP
View
A
Retailer 5
-
£1,379 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,389 GBP
View
A
Retailer 7
-
£1,424 GBP
View
A
Retailer 8
-
£1,462 GBP
View
A
Retailer 9
-
£1,494 GBP
View
Retailer 10
-
£1,494 GBP
View
Price last confirmed 8 days ago
A
Retailer 11
-
£1,509 GBP
View
A
Retailer 12
-
£1,563 GBP
View
A
Retailer 13
-
£1,596 GBP
View
A
Retailer 14
-
£1,603 GBP
View
B+
Retailer 15
-
£1,724 GBP
View
A
Retailer 16
-
£1,823 GBP
View
B+
Retailer 17
-
£2,609 GBP
View
Most Expensive
B
NZ Jewellers
ae6a3d35-d18a-4c9c-8b6a-2d89eccf02e4 · Nov 5
£3,644 GBP
$4,904 USD
View
17 more retailers have this diamond
Prices start from £1,078 GBPSave up to £2,566 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
£1,078 GBP