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Round|Natural|GIA

1.20ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6521965860

Certificate GIA 6521965860

Diamond specifications and retailer prices

From £1,519 GBP
HK$15,900 HKD
As of November 1, 2026
Save £1,943 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,131 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 6521965860. Listed at 18 retailers as of November 1, 2026, with a 128% 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
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6521965860
Dimensions6.79 × 6.74 × 4.20 mm
L/W Ratio1.01
Top View
6.79 mm6.74 mm1.20 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6521965860
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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: £1,595 GBP|Low: £1,519 GBP|High: £3,503 GBP|Avg: £2,109 GBP|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5£1,519 GBP
Retailer 1£1,595 GBP
Retailer 2£1,796 GBP
Retailer 9£1,823 GBP
Retailer 7£1,839 GBP
Retailer 8£1,892 GBP
Retailer 4£2,099 GBP
Retailer 6£2,468 GBP
Retailer 3£3,462 GBP

29 data points across 9 retailers

18 retailers£1,519 GBP to £3,462 GBP

A
Cheapest Retailer
-
£1,519 GBP
HK$15,900 HKD
A
Retailer 2
-
£1,595 GBP
₹203,598 INR
View
A
Retailer 3
-
£1,796 GBP
View
A
Retailer 4
-
£1,823 GBP
$2,443 USD
View
Final sale: no returns
A
Retailer 5
-
£1,839 GBP
$2,464 USD
View
A
Retailer 6
-
£1,879 GBP
$2,517 USD
View
A
Retailer 7
-
£1,892 GBP
SGD 3,426 SGD
View
Retailer 8
-
£1,976 GBP
$2,647 USD
View
Price last confirmed 33 days ago
Retailer 9
-
£1,976 GBP
$2,647 USD
View
Price last confirmed 20 days ago
Retailer 10
-
£1,976 GBP
$2,647 USD
View
Price last confirmed 23 days ago
A
Retailer 11
-
£2,023 GBP
$2,710 USD
View
Retailer 12
-
£2,052 GBP
$2,749 USD
View
Price last confirmed 33 days ago
A
Retailer 13
-
£2,099 GBP
View
A
Retailer 14
-
£2,110 GBP
SGD 3,821 SGD
View
Retailer 15
-
£2,280 GBP
$3,055 USD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
£2,468 GBP
€3,149 EUR
View
B+
Retailer 17
-
£3,462 GBP
View
Most Expensive
NZ Jewellers
7e56413a-2b21-4612-af47-d71e2a651bf6 · Sep 28
£4,131 GBP
$5,535 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from £1,519 GBPSave up to £1,943 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
£1,519 GBP