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Round|Natural|GIA

1.20ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 5343810946

Certificate GIA 5343810946

Diamond specifications and retailer prices

From £1,150 GBP
As of November 6, 2026
Save £2,189 GBP (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,339 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5343810946. Listed at 11 retailers as of November 5, 2026, with prices from £1,150 to £3,339, a £2,189 spread on the same certified stone. NZ Jewellers lists it at £3,339. 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

1.20
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5343810946
Dimensions6.78 × 6.72 × 4.25 mm
L/W Ratio1.01
Top View
6.78 mm6.72 mm1.20 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5343810946
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 62.9%

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 6
Current: £3,339 GBP|Low: £1,132 GBP|High: £3,339 GBP|Avg: £1,612 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
November 6, 2026
Retailer 6£1,150 GBP
Retailer 12£1,247 GBP
Retailer 2£1,364 GBP
Retailer 7£1,369 GBP
Retailer 9£1,369 GBP
Retailer 8£1,432 GBP
Retailer 11£1,471 GBP
Retailer 3£1,486 GBP
Retailer 10£1,580 GBP
Retailer 4£1,649 GBP
Retailer 5£1,855 GBP
NZ Jewellers£3,339 GBP

32 data points across 12 retailers

11 retailers£1,150 GBP to £3,339 GBP

B+
Cheapest Retailer
-
£1,150 GBP
B+
Retailer 2
-
£1,247 GBP
View
B+
Retailer 3
-
£1,364 GBP
View
B+
Retailer 4
-
£1,369 GBP
View
Retailer 5
-
£1,369 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£1,432 GBP
View
B
Retailer 7
-
£1,471 GBP
View
B
Retailer 8
-
£1,486 GBP
View
B
Retailer 9
-
£1,580 GBP
View
B
Retailer 10
-
£1,855 GBP
View
Most Expensive
C
NZ Jewellers
572ae6f1-e4ca-4ccd-84f4-7f95c5ce9926 · Nov 5
£3,339 GBP
$4,494 USD
View
10 more retailers have this diamond
Prices start from £1,150 GBPSave up to £2,189 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+
1.20ct Round
£1,150 GBP