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Round|Natural|GIA

1.20ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6552607191

Certificate GIA 6552607191

Diamond specifications and retailer prices

From £789 GBP
As of November 4, 2026
Save £576 GBP (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,840 GBP at NZ Jewellers · As of September 10, 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 6552607191. Listed at 14 retailers as of November 2, 2026, with a 73% 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

1.20
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552607191
Dimensions6.86 × 6.81 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.86 mm6.81 mm1.20 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552607191
Side View
Table 59.0%Crown 33.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £2,577 GBP|Low: £779 GBP|High: £2,787 GBP|Avg: £1,262 GBP|-7.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£789 GBP
Retailer 4£800 GBP
Retailer 10£976 GBP
Retailer 3£1,057 GBP
Retailer 6£1,057 GBP
Retailer 5£1,065 GBP
Retailer 11£1,106 GBP
Retailer 9£1,171 GBP
Retailer 8£1,219 GBP
Retailer 2£1,365 GBP
NZ Jewellers£2,577 GBP

39 data points across 11 retailers

14 retailers£789 GBP to £1,365 GBP

A
Cheapest Retailer
-
£789 GBP
A
Retailer 2
-
£800 GBP
View
B+
Retailer 3
-
£1,057 GBP
View
Retailer 4
-
£1,057 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£1,057 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£1,065 GBP
View
Retailer 7
-
£1,106 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£1,164 GBP
View
Price last confirmed 60 days ago
B+
Retailer 9
-
£1,171 GBP
View
B+
Retailer 10
-
£1,219 GBP
View
Retailer 11
-
£1,343 GBP
View
Price last confirmed 60 days ago
B+
Retailer 12
-
£1,365 GBP
View
Retailer 13
-
£2,577 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
dbd427c3-6d29-4a33-9572-9cb6a8fd4439 · Sep 10
£2,840 GBP
$3,822 USD
View
Price last confirmed 56 days ago
13 more retailers have this diamond
Prices start from £789 GBPSave up to £576 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
1.20ct Round
£789 GBP