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Round|Natural|GIA

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1563164446

Certificate GIA 1563164446

Diamond specifications and retailer prices

From £1,733 GBP
As of November 5, 2026
Save £1,840 GBP (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,627 GBP at Torres Jewel Co · As of September 30, 2026
View at Torres Jewel Co

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 1563164446. Listed at 14 retailers as of November 2, 2026, with a 106% 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 angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1563164446
Dimensions6.48 × 6.51 × 3.98 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.48 mm6.51 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563164446
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41°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: Nov 5
Current: £2,045 GBP|Low: £1,429 GBP|High: £5,775 GBP|Avg: £2,623 GBP|-41.4%
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
Torres Jewel Co
November 6, 2026
Retailer 5£1,429 GBP
Retailer 8£1,455 GBP
Retailer 3£1,733 GBP
Retailer 11£1,783 GBP
Retailer 15£1,800 GBP
Retailer 16£1,913 GBP
Retailer 7£1,952 GBP
Retailer 1£2,045 GBP
Retailer 14£2,102 GBP
Retailer 6£2,155 GBP
Retailer 9£2,248 GBP
Retailer 2£2,430 GBP
Retailer 13£2,474 GBP
Retailer 10£2,608 GBP
Retailer 12£3,574 GBP
Torres Jewel Co£3,627 GBP
Retailer 4£3,982 GBP

19 data points across 17 retailers

14 retailers£1,733 GBP to £3,574 GBP

Retailer 1
-
£1,455 GBP
Price last confirmed 65 days ago
A
Retailer 2
-
£1,733 GBP
View
A
Retailer 3
-
£1,783 GBP
View
A
Retailer 4
-
£1,800 GBP
View
B+
Retailer 5
-
£1,913 GBP
View
B+
Retailer 6
-
£2,045 GBP
View
B+
Retailer 7
-
£2,102 GBP
View
Retailer 8
-
£2,155 GBP
View
Price last confirmed 68 days ago
B+
Retailer 9
-
£2,248 GBP
View
B
Retailer 10
-
£2,430 GBP
View
B
Retailer 11
-
£2,474 GBP
View
B+
Retailer 12
-
£2,608 GBP
View
B
Retailer 13
-
£3,574 GBP
View
Most Expensive
Torres Jewel Co
25689157 · Sep 30
£3,627 GBP
A$7,510 AUD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from £1,733 GBPSave up to £1,840 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
£1,733 GBP