Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6535380466

Certificate GIA 6535380466

Diamond specifications and retailer prices

From $4,904 AUD
$3,445 USD
As of October 25, 2026
Save $6,030 AUD (55%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $10,935 AUD 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: $7,715 AUD|Low: $4,810 AUD|High: $10,117 AUD|Avg: $6,767 AUD|+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$4,904 AUD
Retailer 5$5,003 AUD
Retailer 2$5,247 AUD
Retailer 4$5,424 AUD
Retailer 11$5,686 AUD
Retailer 13$6,018 AUD
Retailer 8$6,380 AUD
Retailer 3$6,729 AUD
Retailer 12$7,069 AUD
Retailer 6$7,101 AUD
Retailer 7$7,103 AUD
Retailer 1$7,715 AUD
Retailer 9$10,051 AUD
Retailer 10$10,088 AUD

30 data points across 14 retailers

30 retailers$4,904 AUD to $10,935 AUD

B+
Cheapest Retailer
-
$4,904 AUD
$3,445 USD
B+
Retailer 2
-
$5,003 AUD
$3,514 USD
View
B+
Retailer 3
-
$5,247 AUD
$3,686 USD
View
Final sale: no returns
B+
Retailer 4
-
$5,424 AUD
$3,810 USD
View
B+
Retailer 5
-
$5,671 AUD
$3,984 USD
View
B+
Retailer 6
-
$5,686 AUD
$3,994 USD
View
Retailer 7
-
$5,686 AUD
$3,994 USD
View
Price last confirmed 44 days ago
Retailer 8
-
$5,686 AUD
$3,994 USD
View
Price last confirmed 9 days ago
Retailer 9
-
$5,686 AUD
$3,994 USD
View
Price last confirmed 30 days ago
Retailer 10
-
$5,686 AUD
$3,994 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$6,018 AUD
$4,227 USD
View
Retailer 12
-
$6,018 AUD
$4,227 USD
View
Price last confirmed 26 days ago
B
Retailer 13
-
$6,164 AUD
$4,330 USD
View
B
Retailer 14
-
$6,164 AUD
$4,330 USD
View
B+
Retailer 15
-
$6,378 AUD
$4,480 USD
View
B+
Retailer 16
-
$6,380 AUD
£3,529 GBP
View
Retailer 17
-
$6,560 AUD
$4,608 USD
View
Price last confirmed 32 days ago
Retailer 18
-
$6,560 AUD
$4,608 USD
View
Price last confirmed 39 days ago
B+
Retailer 19
-
$6,560 AUD
$4,608 USD
View
Retailer 20
-
$6,729 AUD
View
Price last confirmed 27 days ago
B
Retailer 21
-
$7,069 AUD
£3,910 GBP
View
Retailer 22
-
$7,101 AUD
$4,988 USD
View
Price last confirmed 26 days ago
B+
Retailer 23
-
$7,103 AUD
€4,752 EUR
View
B
Retailer 24
-
$7,715 AUD
ZAR 87,545 ZAR
View
B
Retailer 25
-
$10,051 AUD
£5,559 GBP
View
B
Retailer 26
-
$10,088 AUD
£5,580 GBP
View
Retailer 27
-
$10,935 AUD
$7,681 USD
View
Price last confirmed 41 days ago
B
Retailer 28
-
$10,935 AUD
$7,681 USD
View
Retailer 29
-
$10,935 AUD
$7,681 USD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
dbd2aadf-cce1-4d96-8aad-c53072bb425a · Oct 20
$10,935 AUD
$7,681 USD
View
Price last confirmed 11 days ago
29 more retailers have this diamond
Prices start from $4,904 AUDSave up to $6,030 AUD

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
$4,904 AUD