Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6535380466

Certificate GIA 6535380466

Diamond specifications and retailer prices

From £2,571 GBP
$3,445 USD
As of October 25, 2026
Save £3,161 GBP (55%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £5,733 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 6535380466. Listed at 30 retailers as of October 25, 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6535380466
Dimensions6.78 × 6.76 × 4.25 mm
L/W Ratio1.00
Top View
6.78 mm6.76 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535380466
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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: Oct 25
Current: £4,044 GBP|Low: £2,522 GBP|High: £5,304 GBP|Avg: £3,548 GBP|+2.2%
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
October 31, 2026
Retailer 14£2,571 GBP
Retailer 5£2,623 GBP
Retailer 2£2,751 GBP
Retailer 4£2,844 GBP
Retailer 11£2,981 GBP
Retailer 13£3,155 GBP
Retailer 8£3,345 GBP
Retailer 3£3,528 GBP
Retailer 12£3,706 GBP
Retailer 6£3,723 GBP
Retailer 7£3,724 GBP
Retailer 1£4,044 GBP
Retailer 9£5,269 GBP
Retailer 10£5,289 GBP

30 data points across 14 retailers

30 retailers£2,571 GBP to £5,733 GBP

B+
Cheapest Retailer
-
£2,571 GBP
$3,445 USD
B+
Retailer 2
-
£2,623 GBP
$3,514 USD
View
B+
Retailer 3
-
£2,751 GBP
$3,686 USD
View
Final sale: no returns
B+
Retailer 4
-
£2,844 GBP
$3,810 USD
View
B+
Retailer 5
-
£2,973 GBP
$3,984 USD
View
B+
Retailer 6
-
£2,981 GBP
$3,994 USD
View
Retailer 7
-
£2,981 GBP
$3,994 USD
View
Price last confirmed 44 days ago
Retailer 8
-
£2,981 GBP
$3,994 USD
View
Price last confirmed 9 days ago
Retailer 9
-
£2,981 GBP
$3,994 USD
View
Price last confirmed 30 days ago
Retailer 10
-
£2,981 GBP
$3,994 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
£3,155 GBP
$4,227 USD
View
Retailer 12
-
£3,155 GBP
$4,227 USD
View
Price last confirmed 26 days ago
B
Retailer 13
-
£3,232 GBP
$4,330 USD
View
B
Retailer 14
-
£3,232 GBP
$4,330 USD
View
B+
Retailer 15
-
£3,344 GBP
$4,480 USD
View
B+
Retailer 16
-
£3,345 GBP
View
Retailer 17
-
£3,439 GBP
$4,608 USD
View
Price last confirmed 32 days ago
Retailer 18
-
£3,439 GBP
$4,608 USD
View
Price last confirmed 39 days ago
B+
Retailer 19
-
£3,439 GBP
$4,608 USD
View
Retailer 20
-
£3,528 GBP
A$7,272 AUD
View
Price last confirmed 27 days ago
B
Retailer 21
-
£3,706 GBP
View
Retailer 22
-
£3,723 GBP
$4,988 USD
View
Price last confirmed 26 days ago
B+
Retailer 23
-
£3,724 GBP
€4,752 EUR
View
B
Retailer 24
-
£4,044 GBP
ZAR 87,545 ZAR
View
B
Retailer 25
-
£5,269 GBP
View
B
Retailer 26
-
£5,289 GBP
View
Retailer 27
-
£5,733 GBP
$7,681 USD
View
Price last confirmed 41 days ago
B
Retailer 28
-
£5,733 GBP
$7,681 USD
View
Retailer 29
-
£5,733 GBP
$7,681 USD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
dbd2aadf-cce1-4d96-8aad-c53072bb425a · Oct 20
£5,733 GBP
$7,681 USD
View
Price last confirmed 11 days ago
29 more retailers have this diamond
Prices start from £2,571 GBPSave up to £3,161 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
£2,571 GBP