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Round|Natural|GIA

1.20ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1323678673

Certificate GIA 1323678673

Diamond specifications and retailer prices

From £2,460 GBP
$3,296 USD
As of October 29, 2026
Save £3,025 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,627 GBP at NZ Jewellers · As of September 1, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1323678673. Listed at 19 retailers as of October 29, 2026, with a 123% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1323678673
Dimensions6.77 × 6.73 × 4.23 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.77 mm6.73 mm1.20 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1323678673
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.8%

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 29
Current: £5,485 GBP|Low: £2,335 GBP|High: £5,627 GBP|Avg: £3,336 GBP|-2.5%
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
October 30, 2026
Retailer 17£2,460 GBP
Retailer 14£2,463 GBP
Retailer 3£2,532 GBP
Retailer 4£2,632 GBP
Retailer 18£2,849 GBP
Retailer 7£2,852 GBP
Retailer 8£2,852 GBP
Retailer 10£2,914 GBP
Retailer 16£2,961 GBP
Retailer 5£3,179 GBP
Retailer 15£3,179 GBP
Retailer 2£3,200 GBP
Retailer 6£3,284 GBP
Retailer 9£3,291 GBP
Retailer 12£3,368 GBP
Retailer 19£3,562 GBP
Retailer 11£3,843 GBP
Retailer 13£5,293 GBP
NZ Jewellers£5,485 GBP

35 data points across 19 retailers

19 retailers£2,460 GBP to £5,485 GBP

A
Cheapest Retailer
-
£2,460 GBP
$3,296 USD
A
Retailer 2
-
£2,463 GBP
$3,300 USD
View
B+
Retailer 3
-
£2,532 GBP
$3,393 USD
View
B+
Retailer 4
-
£2,632 GBP
$3,527 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,849 GBP
$3,817 USD
View
B+
Retailer 6
-
£2,852 GBP
$3,821 USD
View
B+
Retailer 7
-
£2,852 GBP
$3,821 USD
View
B+
Retailer 8
-
£2,961 GBP
$3,968 USD
View
B
Retailer 9
-
£3,179 GBP
$4,260 USD
View
B
Retailer 10
-
£3,179 GBP
$4,260 USD
View
B+
Retailer 11
-
£3,200 GBP
View
B+
Retailer 12
-
£3,284 GBP
$4,400 USD
View
B+
Retailer 13
-
£3,291 GBP
$4,409 USD
View
B+
Retailer 14
-
£3,368 GBP
€4,298 EUR
View
Retailer 15
-
£3,376 GBP
$4,523 USD
View
Price last confirmed 61 days ago
Retailer 16
-
£3,562 GBP
$4,773 USD
View
Price last confirmed 7 days ago
B
Retailer 17
-
£5,293 GBP
View
B
Retailer 18
-
£5,485 GBP
$7,349 USD
View
Most Expensive
NZ Jewellers
5791f86e-e269-472e-ac73-02b147a13033 · Sep 1
£5,627 GBP
$7,539 USD
View
Price last confirmed 59 days ago
18 more retailers have this diamond
Prices start from £2,460 GBPSave up to £3,025 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
£2,460 GBP