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Round|Natural|GIA

1.05ct M IF Round Natural Diamond

EX • M/IF • GIA 1555426188

Certificate GIA 1555426188

Diamond specifications and retailer prices

From £1,198 GBP
As of November 6, 2026
Save £966 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,333 GBP at NZ Jewellers · As of October 17, 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 M colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1555426188. Listed at 12 retailers as of November 5, 2026, with a 81% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
M
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1555426188
Dimensions6.56 × 6.58 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.56 mm6.58 mm1.05 ctM / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555426188
Side View
Table 60.0%Crown 34.5°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 61.0%

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: £1,245 GBP|Low: £1,189 GBP|High: £2,183 GBP|Avg: £1,614 GBP|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£1,198 GBP
Retailer 1£1,245 GBP
Retailer 5£1,493 GBP
Retailer 6£1,594 GBP
Retailer 2£1,945 GBP
Retailer 3£2,164 GBP

46 data points across 6 retailers

12 retailers£1,198 GBP to £2,164 GBP

A
Cheapest Retailer
-
£1,198 GBP
A
Retailer 2
-
£1,245 GBP
View
B+
Retailer 3
-
£1,493 GBP
View
Retailer 4
-
£1,594 GBP
View
Price last confirmed 21 days ago
Retailer 5
-
£1,594 GBP
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£1,609 GBP
View
Retailer 7
-
£1,668 GBP
View
Price last confirmed 22 days ago
B+
Retailer 8
-
£1,697 GBP
View
Retailer 9
-
£1,840 GBP
View
Price last confirmed 19 days ago
B+
Retailer 10
-
£1,945 GBP
View
B+
Retailer 11
-
£2,164 GBP
View
Most Expensive
NZ Jewellers
7273b80c-0a99-4a19-98e6-bd40b8a85516 · Oct 17
£3,333 GBP
$4,486 USD
View
Price last confirmed 19 days ago
11 more retailers have this diamond
Prices start from £1,198 GBPSave up to £966 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
£1,198 GBP