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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7423988908

Certificate GIA 7423988908

Diamond specifications and retailer prices

From £1,502 GBP
As of November 6, 2026
Save £2,719 GBP (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,221 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 7423988908. Listed at 18 retailers as of November 5, 2026, with prices from £1,502 to £4,221, a £2,719 spread on the same certified stone. NZ Jewellers lists it at £4,221. 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
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7423988908
Dimensions6.54 × 6.51 × 4.06 mm
L/W Ratio1.00
Top View
6.54 mm6.51 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7423988908
Side View
Table 56.0%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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 6
Current: £4,221 GBP|Low: £1,401 GBP|High: £4,221 GBP|Avg: £2,428 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6£1,502 GBP
Retailer 7£1,652 GBP
Retailer 8£1,688 GBP
Retailer 10£1,913 GBP
Retailer 3£2,124 GBP
Retailer 9£2,262 GBP
Retailer 5£2,271 GBP
Retailer 2£2,464 GBP
Retailer 4£3,528 GBP
NZ Jewellers£4,221 GBP

43 data points across 10 retailers

18 retailers£1,502 GBP to £4,221 GBP

A
Cheapest Retailer
-
£1,502 GBP
A
Retailer 2
-
£1,652 GBP
View
A
Retailer 3
-
£1,653 GBP
View
A
Retailer 4
-
£1,688 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,765 GBP
View
B+
Retailer 6
-
£1,829 GBP
View
Retailer 7
-
£1,829 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,913 GBP
View
B+
Retailer 9
-
£2,103 GBP
View
B+
Retailer 10
-
£2,103 GBP
View
B+
Retailer 11
-
£2,111 GBP
View
B+
Retailer 12
-
£2,124 GBP
View
B+
Retailer 13
-
£2,170 GBP
View
Retailer 14
-
£2,262 GBP
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£2,271 GBP
View
B+
Retailer 16
-
£2,464 GBP
View
B
Retailer 17
-
£3,528 GBP
View
Most Expensive
B
NZ Jewellers
96e44543-1306-4d89-b4a9-f2289f918478 · Nov 5
£4,221 GBP
$5,681 USD
View
17 more retailers have this diamond
Prices start from £1,502 GBPSave up to £2,719 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
£1,502 GBP