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Round|Natural|GIA

1.20ct F SI2 Round Natural Diamond

VG • F/SI2 • GIA 2426381260

Certificate GIA 2426381260

Diamond specifications and retailer prices

From £1,949 GBP
HK$20,400 HKD
As of November 1, 2026
Save £4,307 GBP (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,256 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 very-good cut grade and certified by GIA 2426381260. Listed at 18 retailers as of October 31, 2026, with prices from £1,949 to £6,256, a £4,307 spread on the same certified stone. Diamond Quarter lists it at £6,256. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2426381260
Dimensions6.68 × 6.60 × 4.25 mm
L/W Ratio1.01
Top View
6.68 mm6.60 mm1.20 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2426381260
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.1%

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 1
Current: £2,380 GBP|Low: £1,930 GBP|High: £4,870 GBP|Avg: £2,753 GBP|-9.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 12£1,949 GBP
Retailer 14£2,064 GBP
Retailer 2£2,123 GBP
Retailer 17£2,189 GBP
Retailer 3£2,247 GBP
Retailer 8£2,372 GBP
Retailer 1£2,380 GBP
Retailer 15£2,463 GBP
Retailer 5£2,694 GBP
Retailer 16£2,694 GBP
Retailer 11£2,697 GBP
Retailer 9£2,736 GBP
Retailer 6£2,784 GBP
Retailer 13£2,789 GBP
Retailer 4£2,965 GBP
Retailer 10£4,378 GBP
Retailer 7£4,561 GBP

38 data points across 17 retailers

18 retailers£1,949 GBP to £6,256 GBP

A
Cheapest Retailer
-
£1,949 GBP
HK$20,400 HKD
A
Retailer 2
-
£2,064 GBP
$2,765 USD
View
A
Retailer 3
-
£2,123 GBP
$2,845 USD
View
A
Retailer 4
-
£2,189 GBP
$2,933 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,247 GBP
$3,011 USD
View
B+
Retailer 6
-
£2,372 GBP
$3,178 USD
View
B+
Retailer 7
-
£2,380 GBP
View
B+
Retailer 8
-
£2,463 GBP
$3,300 USD
View
B+
Retailer 9
-
£2,694 GBP
$3,610 USD
View
B+
Retailer 10
-
£2,694 GBP
$3,610 USD
View
B+
Retailer 11
-
£2,697 GBP
View
B+
Retailer 12
-
£2,736 GBP
$3,666 USD
View
B+
Retailer 13
-
£2,784 GBP
$3,730 USD
View
B+
Retailer 14
-
£2,789 GBP
€3,559 EUR
View
Retailer 15
-
£2,965 GBP
$3,973 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
£4,378 GBP
View
B
Retailer 17
-
£4,561 GBP
$6,111 USD
View
Most Expensive
B
Diamond Quarter
1.2SI2F2460BD50N · Oct 31
£6,256 GBP
View
17 more retailers have this diamond
Prices start from £1,949 GBPSave up to £4,307 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
£1,949 GBP