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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 3365657382

Certificate GIA 3365657382

Diamond specifications and retailer prices

From $5,800 AUD
As of November 5, 2026
Save $6,194 AUD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,630 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 3365657382. Listed at 19 retailers as of November 4, 2026, with a 107% 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 angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3365657382
Dimensions6.81 × 6.75 × 4.14 mm
L/W Ratio1.01
Top View
6.81 mm6.75 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3365657382
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: Nov 5
Current: $12,630 AUD|Low: $5,688 AUD|High: $13,136 AUD|Avg: $8,176 AUD|-3.9%
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
November 6, 2026
Retailer 6$5,721 AUD
Retailer 18$5,800 AUD
Retailer 16$5,858 AUD
Retailer 5$5,966 AUD
Retailer 2$6,252 AUD
Retailer 3$6,462 AUD
Retailer 19$6,788 AUD
Retailer 9$6,840 AUD
Retailer 12$7,372 AUD
Retailer 7$7,597 AUD
Retailer 17$7,597 AUD
Retailer 8$7,845 AUD
Retailer 10$7,894 AUD
Retailer 11$7,917 AUD
Retailer 14$7,997 AUD
Retailer 4$8,335 AUD
Retailer 13$9,213 AUD
Retailer 15$11,994 AUD
NZ Jewellers$12,630 AUD

31 data points across 19 retailers

19 retailers$5,800 AUD to $11,994 AUD

B+
Cheapest Retailer
-
$5,800 AUD
Retailer 2
-
$5,858 AUD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$5,966 AUD
View
B+
Retailer 4
-
$6,252 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,462 AUD
View
Retailer 6
-
$6,840 AUD
View
Price last confirmed 18 days ago
Retailer 7
-
$6,840 AUD
View
Price last confirmed 22 days ago
Retailer 8
-
$6,840 AUD
View
Price last confirmed 23 days ago
B+
Retailer 9
-
$7,372 AUD
View
B
Retailer 10
-
$7,597 AUD
View
B
Retailer 11
-
$7,597 AUD
View
B
Retailer 12
-
$7,845 AUD
View
Retailer 13
-
$7,894 AUD
View
Price last confirmed 17 days ago
Retailer 14
-
$7,917 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$7,997 AUD
View
Retailer 16
-
$8,335 AUD
View
Price last confirmed 24 days ago
B
Retailer 17
-
$9,213 AUD
View
B
Retailer 18
-
$11,994 AUD
View
Most Expensive
NZ Jewellers
90a0326f-d99a-4d38-84a9-3b7d0b5f5443 · Oct 20
$12,630 AUD
$8,678 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $5,800 AUDSave up to $6,194 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
$5,800 AUD