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Round|Natural|GIA

1.05ct I I1 Round Natural Diamond

EX • I/I1 • GIA 6421559167

Certificate GIA 6421559167

Diamond specifications and retailer prices

From £1,347 GBP
₹171,918 INR
As of October 31, 2026
Save £2,508 GBP (65%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,856 GBP at NZ Jewellers · As of October 30, 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 I1 clarity (included), with a top-tier cut grade and certified by GIA 6421559167. Listed at 9 retailers as of October 30, 2026, with prices from £1,347 to £3,856, a £2,508 spread on the same certified stone. NZ Jewellers lists it at £3,856. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
I
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6421559167
Dimensions6.53 × 6.50 × 4.01 mm
L/W Ratio1.00
Top View
6.53 mm6.50 mm1.05 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421559167
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

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: £3,856 GBP|Low: £1,337 GBP|High: £3,856 GBP|Avg: £2,009 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 4£1,347 GBP
Retailer 5£1,357 GBP
Retailer 3£1,661 GBP
Retailer 7£1,666 GBP
Retailer 8£1,844 GBP
Retailer 10£1,844 GBP
Retailer 6£1,929 GBP
Retailer 9£2,128 GBP
Retailer 2£2,293 GBP
NZ Jewellers£3,856 GBP

45 data points across 10 retailers

9 retailers£1,347 GBP to £3,856 GBP

A
Cheapest Retailer
-
£1,347 GBP
₹171,918 INR
B+
Retailer 2
-
£1,357 GBP
HK$14,200 HKD
View
B+
Retailer 3
-
£1,661 GBP
$2,226 USD
View
B
Retailer 4
-
£1,844 GBP
$2,471 USD
View
B
Retailer 5
-
£1,844 GBP
$2,471 USD
View
B
Retailer 6
-
£1,929 GBP
$2,585 USD
View
B
Retailer 7
-
£2,128 GBP
$2,851 USD
View
B
Retailer 8
-
£2,293 GBP
€2,926 EUR
View
Most Expensive
C
NZ Jewellers
2754411f-91b0-46d0-ac2f-dcc3467d68ab · Oct 30
£3,856 GBP
$5,166 USD
View
8 more retailers have this diamond
Prices start from £1,347 GBPSave up to £2,508 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
£1,347 GBP