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Round|Natural|GIA

1.20ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 3555195056

Certificate GIA 3555195056

Diamond specifications and retailer prices

From £1,509 GBP
HK$15,800 HKD
As of October 30, 2026
Save £2,746 GBP (65%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,256 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555195056. Listed at 17 retailers as of October 28, 2026, with prices from £1,509 to £4,256, a £2,746 spread on the same certified stone. Queensmith lists it at £4,256. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3555195056
Dimensions6.76 × 6.81 × 4.23 mm
L/W Ratio1.01
Top View
6.76 mm6.81 mm1.20 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555195056
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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 30
Current: £4,256 GBP|Low: £1,509 GBP|High: £4,265 GBP|Avg: £2,412 GBP|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 9£1,509 GBP
Retailer 2£1,610 GBP
Retailer 6£1,771 GBP
Retailer 7£1,873 GBP
Retailer 8£2,030 GBP
Retailer 4£2,157 GBP
Retailer 3£2,536 GBP
Retailer 5£3,576 GBP
Queensmith£4,256 GBP

34 data points across 9 retailers

17 retailers£1,509 GBP to £4,256 GBP

A
Cheapest Retailer
-
£1,509 GBP
HK$15,800 HKD
A
Retailer 2
-
£1,610 GBP
₹205,399 INR
View
A
Retailer 3
-
£1,771 GBP
SGD 3,207 SGD
View
A
Retailer 4
-
£1,873 GBP
$2,510 USD
View
Final sale: no returns
A
Retailer 5
-
£1,890 GBP
$2,533 USD
View
Retailer 6
-
£2,030 GBP
$2,720 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£2,030 GBP
$2,720 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
£2,075 GBP
$2,780 USD
View
Retailer 9
-
£2,108 GBP
$2,825 USD
View
Price last confirmed 31 days ago
A
Retailer 10
-
£2,124 GBP
SGD 3,846 SGD
View
A
Retailer 11
-
£2,136 GBP
$2,862 USD
View
A
Retailer 12
-
£2,157 GBP
View
Retailer 13
-
£2,343 GBP
$3,139 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
£2,536 GBP
€3,236 EUR
View
B+
Retailer 15
-
£3,576 GBP
View
Retailer 16
-
£4,245 GBP
$5,688 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Queensmith
3555195056 · Oct 28
£4,256 GBP
View
16 more retailers have this diamond
Prices start from £1,509 GBPSave up to £2,746 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
£1,509 GBP