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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 3365657382

Certificate GIA 3365657382

Diamond specifications and retailer prices

From £2,977 GBP
As of November 5, 2026
Save £3,180 GBP (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,483 GBP at NZ Jewellers · As of October 20, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3365657382. Listed at 19 retailers as of November 4, 2026, with a 107% 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3365657382
Dimensions6.81 × 6.75 × 4.14 mm
L/W Ratio1.01
Top View
6.81 mm6.75 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3365657382
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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 5
Current: £6,483 GBP|Low: £2,920 GBP|High: £6,743 GBP|Avg: £4,206 GBP|-3.9%
NZ Jewellers
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
Retailer 18
Retailer 19
November 6, 2026
Retailer 6£2,937 GBP
Retailer 18£2,977 GBP
Retailer 16£3,007 GBP
Retailer 5£3,062 GBP
Retailer 2£3,210 GBP
Retailer 3£3,317 GBP
Retailer 19£3,485 GBP
Retailer 9£3,511 GBP
Retailer 12£3,784 GBP
Retailer 7£3,900 GBP
Retailer 17£3,900 GBP
Retailer 8£4,027 GBP
Retailer 10£4,052 GBP
Retailer 11£4,064 GBP
Retailer 14£4,105 GBP
Retailer 4£4,279 GBP
Retailer 13£4,729 GBP
Retailer 15£6,157 GBP
NZ Jewellers£6,483 GBP

32 data points across 19 retailers

19 retailers£2,977 GBP to £6,157 GBP

B+
Cheapest Retailer
-
£2,977 GBP
Retailer 2
-
£3,007 GBP
View
Price last confirmed 16 days ago
B+
Retailer 3
-
£3,062 GBP
View
B+
Retailer 4
-
£3,210 GBP
View
Final sale: no returns
B+
Retailer 5
-
£3,317 GBP
View
Retailer 6
-
£3,511 GBP
View
Price last confirmed 17 days ago
Retailer 7
-
£3,511 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£3,511 GBP
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£3,784 GBP
View
B
Retailer 10
-
£3,900 GBP
View
B
Retailer 11
-
£3,900 GBP
View
B
Retailer 12
-
£4,027 GBP
View
Retailer 13
-
£4,052 GBP
View
Price last confirmed 16 days ago
Retailer 14
-
£4,064 GBP
View
Price last confirmed 28 days ago
B
Retailer 15
-
£4,105 GBP
View
Retailer 16
-
£4,279 GBP
View
Price last confirmed 23 days ago
B
Retailer 17
-
£4,729 GBP
View
B
Retailer 18
-
£6,157 GBP
View
Most Expensive
NZ Jewellers
90a0326f-d99a-4d38-84a9-3b7d0b5f5443 · Oct 20
£6,483 GBP
$8,678 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from £2,977 GBPSave up to £3,180 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
£2,977 GBP