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Round|Natural|GIA

1.05ct I I1 Round Natural Diamond

EX • I/I1 • GIA 5242112392

Certificate GIA 5242112392

Diamond specifications and retailer prices

From £1,615 GBP
$2,167 USD
As of November 1, 2026
Save £2,510 GBP (61%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,125 GBP at NZ Jewellers · As of November 2, 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 5242112392. Listed at 8 retailers as of November 1, 2026, with prices from £1,615 to £4,125, a £2,510 spread on the same certified stone. NZ Jewellers lists it at £4,125. 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 angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5242112392
Dimensions6.48 × 6.51 × 4.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.48 mm6.51 mm1.05 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242112392
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £4,125 GBP|Low: £1,615 GBP|High: £4,125 GBP|Avg: £2,116 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£1,615 GBP
Retailer 6£1,730 GBP
Retailer 4£1,787 GBP
Retailer 7£1,787 GBP
Retailer 5£1,870 GBP
Retailer 3£2,062 GBP
Retailer 2£2,452 GBP
NZ Jewellers£4,125 GBP

6 data points across 8 retailers

8 retailers£1,615 GBP to £4,125 GBP

B+
Cheapest Retailer
-
£1,615 GBP
$2,167 USD
B
Retailer 2
-
£1,730 GBP
$2,321 USD
View
B
Retailer 3
-
£1,787 GBP
$2,398 USD
View
B
Retailer 4
-
£1,787 GBP
$2,398 USD
View
B+
Retailer 5
-
£1,870 GBP
$2,509 USD
View
B
Retailer 6
-
£2,062 GBP
$2,767 USD
View
B
Retailer 7
-
£2,452 GBP
€3,134 EUR
View
Most Expensive
C
NZ Jewellers
ae8748af-a6d5-4a9e-960f-0415be7fdfeb · Nov 2
£4,125 GBP
$5,535 USD
View
7 more retailers have this diamond
Prices start from £1,615 GBPSave up to £2,510 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.

B+
1.05ct Round
£1,615 GBP