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Round|Natural|GIA

1.20ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6545460107

Certificate GIA 6545460107

Diamond specifications and retailer prices

From $3,595 AUD
As of November 6, 2026
Save $4,273 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,918 AUD at Queensmith · As of October 28, 2026
View at Queensmith

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 6545460107. Listed at 18 retailers as of November 4, 2026, with a 119% 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 angle32°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6545460107
Dimensions6.85 × 6.82 × 4.22 mm
L/W Ratio1.00
Top View
6.85 mm6.82 mm1.20 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545460107
Side View
Table 55.0%Crown 32°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 61.8%

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: Nov 6
Current: $8,918 AUD|Low: $3,595 AUD|High: $8,946 AUD|Avg: $5,503 AUD|+2.4%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$3,595 AUD
Retailer 2$3,719 AUD
Retailer 8$4,309 AUD
Retailer 9$4,355 AUD
Retailer 5$4,502 AUD
Retailer 3$4,851 AUD
Retailer 4$5,478 AUD
Retailer 6$7,868 AUD
Queensmith$8,918 AUD

35 data points across 9 retailers

18 retailers$3,595 AUD to $7,868 AUD

A
Cheapest Retailer
-
$3,595 AUD
A
Retailer 2
-
$3,719 AUD
View
A
Retailer 3
-
$4,309 AUD
View
A
Retailer 4
-
$4,355 AUD
View
Final sale: no returns
A
Retailer 5
-
$4,408 AUD
View
A
Retailer 6
-
$4,502 AUD
View
Retailer 7
-
$4,717 AUD
View
Price last confirmed 40 days ago
Retailer 8
-
$4,717 AUD
View
Price last confirmed 29 days ago
Retailer 9
-
$4,717 AUD
View
Price last confirmed 26 days ago
B+
Retailer 10
-
$4,851 AUD
View
Retailer 11
-
$4,899 AUD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
$4,925 AUD
View
B+
Retailer 13
-
$4,995 AUD
View
Retailer 14
-
$5,443 AUD
View
Price last confirmed 39 days ago
B+
Retailer 15
-
$5,478 AUD
View
B
Retailer 16
-
$7,868 AUD
View
Retailer 17
-
$8,219 AUD
View
Price last confirmed 40 days ago
Most Expensive
Queensmith
6545460107 · Oct 28
$8,918 AUD
£4,825 GBP
View
Price last confirmed 9 days ago
17 more retailers have this diamond
Prices start from $3,595 AUDSave up to $4,273 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.

A
1.20ct Round
$3,595 AUD