Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6522662093

Certificate GIA 6522662093

Diamond specifications and retailer prices

From £1,265 GBP
As of November 4, 2026
Save £1,719 GBP (58%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,713 GBP at NZ Jewellers · As of September 19, 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 6522662093. Listed at 21 retailers as of November 2, 2026, with a 136% 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6522662093
Dimensions6.49 × 6.46 × 4.05 mm
L/W Ratio1.00
Top View
6.49 mm6.46 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6522662093
Side View
Table 56.0%Crown 35.5°Girdle: MD-MDPavilion 40.8°Culet: NoneDepth 62.6%

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 4
Current: £3,560 GBP|Low: £1,255 GBP|High: £3,560 GBP|Avg: £1,973 GBP
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
November 6, 2026
Retailer 11£1,265 GBP
Retailer 6£1,539 GBP
Retailer 13£1,571 GBP
Retailer 15£1,579 GBP
Retailer 5£1,610 GBP
Retailer 4£1,703 GBP
Retailer 12£1,705 GBP
Retailer 7£1,759 GBP
Retailer 2£1,840 GBP
Retailer 3£1,964 GBP
Retailer 9£2,078 GBP
Retailer 14£2,096 GBP
Retailer 8£2,109 GBP
Retailer 10£2,983 GBP
NZ Jewellers£3,560 GBP

42 data points across 15 retailers

21 retailers£1,265 GBP to £2,983 GBP

A
Cheapest Retailer
-
£1,265 GBP
A
Retailer 2
-
£1,539 GBP
View
B+
Retailer 3
-
£1,571 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,579 GBP
View
A
Retailer 5
-
£1,610 GBP
View
Retailer 6
-
£1,703 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£1,703 GBP
View
Price last confirmed 21 days ago
B+
Retailer 8
-
£1,705 GBP
View
Retailer 9
-
£1,759 GBP
View
Price last confirmed 10 days ago
Retailer 10
-
£1,782 GBP
View
Price last confirmed 22 days ago
B+
Retailer 11
-
£1,840 GBP
View
Retailer 12
-
£1,964 GBP
View
Price last confirmed 68 days ago
Retailer 13
-
£1,964 GBP
View
Price last confirmed 16 days ago
Retailer 14
-
£2,049 GBP
View
Price last confirmed 45 days ago
B+
Retailer 15
-
£2,078 GBP
View
Retailer 16
-
£2,096 GBP
View
Price last confirmed 30 days ago
B+
Retailer 17
-
£2,109 GBP
View
B
Retailer 18
-
£2,983 GBP
View
Retailer 19
-
£3,560 GBP
View
Price last confirmed 17 days ago
Retailer 20
-
£3,713 GBP
View
Price last confirmed 66 days ago
Most Expensive
NZ Jewellers
02c4d13c-d5dd-4510-8058-1e666f6883bb · Sep 19
£3,713 GBP
$4,997 USD
View
Price last confirmed 47 days ago
20 more retailers have this diamond
Prices start from £1,265 GBPSave up to £1,719 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
£1,265 GBP