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Round|Natural|GIA

1.20ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6552158299

Certificate GIA 6552158299

Diamond specifications and retailer prices

From £1,595 GBP
HK$16,700 HKD
As of October 31, 2026
Save £2,732 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,437 GBP at NZ Jewellers · As of September 28, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552158299. Listed at 17 retailers as of October 28, 2026, with a 171% 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6552158299
Dimensions6.69 × 6.78 × 4.26 mm
L/W Ratio1.01
Top View
6.69 mm6.78 mm1.20 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552158299
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.3%

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: £2,206 GBP|Low: £1,586 GBP|High: £4,341 GBP|Avg: £2,431 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9£1,595 GBP
Retailer 8£1,678 GBP
Retailer 2£1,852 GBP
Retailer 7£1,939 GBP
Retailer 3£2,123 GBP
Retailer 6£2,142 GBP
Retailer 1£2,206 GBP
Retailer 5£2,232 GBP
Retailer 10£2,484 GBP
Retailer 4£3,680 GBP
Retailer 11£4,327 GBP

34 data points across 11 retailers

17 retailers£1,595 GBP to £4,327 GBP

A
Cheapest Retailer
-
£1,595 GBP
HK$16,700 HKD
A
Retailer 2
-
£1,678 GBP
₹214,090 INR
View
A
Retailer 3
-
£1,852 GBP
SGD 3,354 SGD
View
A
Retailer 4
-
£1,939 GBP
$2,598 USD
View
Final sale: no returns
A
Retailer 5
-
£1,978 GBP
$2,650 USD
View
Retailer 6
-
£2,123 GBP
$2,844 USD
View
Price last confirmed 33 days ago
Retailer 7
-
£2,123 GBP
$2,844 USD
View
Price last confirmed 16 days ago
A
Retailer 8
-
£2,142 GBP
$2,870 USD
View
Retailer 9
-
£2,204 GBP
$2,953 USD
View
Price last confirmed 32 days ago
A
Retailer 10
-
£2,206 GBP
$2,956 USD
View
A
Retailer 11
-
£2,221 GBP
SGD 4,022 SGD
View
A
Retailer 12
-
£2,232 GBP
View
Retailer 13
-
£2,449 GBP
$3,281 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
£2,484 GBP
€3,170 EUR
View
B
Retailer 15
-
£3,680 GBP
View
B
Retailer 16
-
£4,327 GBP
View
Most Expensive
NZ Jewellers
bc9c2125-f823-4257-bc32-7919736c4a44 · Sep 28
£4,437 GBP
$5,945 USD
View
Price last confirmed 34 days ago
16 more retailers have this diamond
Prices start from £1,595 GBPSave up to £2,732 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
£1,595 GBP