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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 3555882621

Certificate GIA 3555882621

Diamond specifications and retailer prices

From £1,644 GBP
As of November 5, 2026
Save £1,720 GBP (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,364 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 3555882621. Listed at 10 retailers as of November 5, 2026, with prices from £1,644 to £3,364, a £1,720 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,364. 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 angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3555882621
Dimensions6.87 × 6.91 × 4.13 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.87 mm6.91 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555882621
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.9%

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 5
Current: £2,458 GBP|Low: £1,634 GBP|High: £3,795 GBP|Avg: £2,549 GBP|-10.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 2£1,644 GBP
Retailer 4£2,018 GBP
Retailer 5£2,052 GBP
Retailer 8£2,235 GBP
Retailer 6£2,400 GBP
Retailer 1£2,458 GBP
Retailer 7£2,477 GBP
Retailer 3£2,571 GBP
Retailer 9£3,129 GBP
Wholesale Diamonds Direct£3,364 GBP

33 data points across 10 retailers

10 retailers£1,644 GBP to £3,364 GBP

A
Cheapest Retailer
-
£1,644 GBP
A
Retailer 2
-
£2,018 GBP
View
A
Retailer 3
-
£2,052 GBP
View
A
Retailer 4
-
£2,235 GBP
View
A
Retailer 5
-
£2,400 GBP
View
A
Retailer 6
-
£2,458 GBP
View
B+
Retailer 7
-
£2,477 GBP
View
B+
Retailer 8
-
£2,571 GBP
View
B+
Retailer 9
-
£3,129 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
610677879 · Nov 6
£3,364 GBP
$4,502 USD
View
9 more retailers have this diamond
Prices start from £1,644 GBPSave up to £1,720 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
£1,644 GBP