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Round|Natural|GIA

1.20ct G SI2 Round Natural Diamond

VG • G/SI2 • GIA 2406656549

Certificate GIA 2406656549

Diamond specifications and retailer prices

From £1,720 GBP
HK$18,000 HKD
As of October 30, 2026
Save £3,175 GBP (65%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,895 GBP at Diamond Quarter · As of October 29, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2406656549. Listed at 18 retailers as of October 29, 2026, with prices from £1,720 to £4,895, a £3,175 spread on the same certified stone. Diamond Quarter lists it at £4,895. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2406656549
Dimensions6.66 × 6.61 × 4.29 mm
L/W Ratio1.01
Top View
6.66 mm6.61 mm1.20 ctG / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2406656549
Side View
Table 55.0%Crown 38°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.7%

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: £2,425 GBP|Low: £1,649 GBP|High: £4,124 GBP|Avg: £2,471 GBP|+1.3%
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
October 30, 2026
Retailer 15£1,720 GBP
Retailer 16£1,847 GBP
Retailer 2£1,849 GBP
Retailer 17£1,952 GBP
Retailer 3£2,005 GBP
Retailer 8£2,115 GBP
Retailer 14£2,115 GBP
Retailer 12£2,196 GBP
Retailer 4£2,411 GBP
Retailer 13£2,411 GBP
Retailer 1£2,425 GBP
Retailer 9£2,440 GBP
Retailer 11£2,477 GBP
Retailer 6£2,493 GBP
Retailer 5£2,709 GBP
Retailer 10£3,926 GBP
Retailer 7£4,068 GBP

39 data points across 17 retailers

18 retailers£1,720 GBP to £4,895 GBP

A
Cheapest Retailer
-
£1,720 GBP
HK$18,000 HKD
A
Retailer 2
-
£1,847 GBP
$2,475 USD
View
A
Retailer 3
-
£1,849 GBP
$2,477 USD
View
B+
Retailer 4
-
£1,952 GBP
$2,616 USD
View
Final sale: no returns
A
Retailer 5
-
£2,005 GBP
$2,686 USD
View
B+
Retailer 6
-
£2,115 GBP
$2,834 USD
View
B+
Retailer 7
-
£2,115 GBP
$2,834 USD
View
B+
Retailer 8
-
£2,196 GBP
$2,943 USD
View
B+
Retailer 9
-
£2,411 GBP
$3,230 USD
View
B+
Retailer 10
-
£2,411 GBP
$3,230 USD
View
B+
Retailer 11
-
£2,425 GBP
View
B+
Retailer 12
-
£2,440 GBP
$3,270 USD
View
B+
Retailer 13
-
£2,477 GBP
€3,161 EUR
View
B+
Retailer 14
-
£2,493 GBP
$3,340 USD
View
Retailer 15
-
£2,709 GBP
$3,630 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
£3,926 GBP
View
B
Retailer 17
-
£4,068 GBP
$5,451 USD
View
Most Expensive
B
Diamond Quarter
1.2SI2G24496915N · Oct 29
£4,895 GBP
View
17 more retailers have this diamond
Prices start from £1,720 GBPSave up to £3,175 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
£1,720 GBP