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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1548725237

Certificate GIA 1548725237

Diamond specifications and retailer prices

From £1,483 GBP
As of November 6, 2026
Save £2,676 GBP (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,159 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct 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 1548725237. Listed at 18 retailers as of November 5, 2026, with prices from £1,483 to £4,159, a £2,676 spread on the same certified stone. NZ Jewellers lists it at £4,159. 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1548725237
Dimensions6.44 × 6.48 × 4.08 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Knot, Needle
Top View
6.44 mm6.48 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548725237
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°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: £1,904 GBP|Low: £1,464 GBP|High: £3,527 GBP|Avg: £2,092 GBP|-1.8%
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 8£1,483 GBP
Retailer 11£1,628 GBP
Retailer 9£1,631 GBP
Retailer 10£1,663 GBP
Retailer 3£1,886 GBP
Retailer 1£1,904 GBP
Retailer 4£2,093 GBP
Retailer 2£2,228 GBP
Retailer 7£2,236 GBP
Retailer 5£2,428 GBP
Retailer 6£3,476 GBP

41 data points across 11 retailers

18 retailers£1,483 GBP to £4,159 GBP

A
Cheapest Retailer
-
£1,483 GBP
A
Retailer 2
-
£1,628 GBP
View
A
Retailer 3
-
£1,631 GBP
View
A
Retailer 4
-
£1,663 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,802 GBP
View
Retailer 6
-
£1,802 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,886 GBP
View
B+
Retailer 8
-
£1,904 GBP
View
B+
Retailer 9
-
£2,073 GBP
View
B+
Retailer 10
-
£2,073 GBP
View
B+
Retailer 11
-
£2,080 GBP
View
B+
Retailer 12
-
£2,093 GBP
View
B+
Retailer 13
-
£2,140 GBP
View
Retailer 14
-
£2,228 GBP
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£2,236 GBP
View
B+
Retailer 16
-
£2,428 GBP
View
B
Retailer 17
-
£3,476 GBP
View
Most Expensive
B
NZ Jewellers
c21700ea-8b83-4934-b62a-871d0c649982 · Nov 5
£4,159 GBP
$5,598 USD
View
17 more retailers have this diamond
Prices start from £1,483 GBPSave up to £2,676 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
1.05ct Round
£1,483 GBP