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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2546459773

Certificate GIA 2546459773

Diamond specifications and retailer prices

From $4,053 AUD
As of November 4, 2026
Save $2,150 AUD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,195 AUD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546459773. Listed at 19 retailers as of November 4, 2026, with a 53% 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2546459773
Dimensions6.75 × 6.79 × 4.21 mm
L/W Ratio1.01
Top View
6.75 mm6.79 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2546459773
Side View
Table 60.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.2%

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 4
Current: $6,127 AUD|Low: $4,101 AUD|High: $8,932 AUD|Avg: $5,804 AUD|+14.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$4,101 AUD
Retailer 3$4,194 AUD
Retailer 8$4,782 AUD
Retailer 4$5,653 AUD
Retailer 2$5,769 AUD
Retailer 9$5,979 AUD
Retailer 1$6,127 AUD
Retailer 5$6,363 AUD
Retailer 6$8,932 AUD

39 data points across 9 retailers

19 retailers$4,053 AUD to $6,203 AUD

B+
Cheapest Retailer
-
$4,053 AUD
B+
Retailer 2
-
$4,101 AUD
View
B+
Retailer 3
-
$4,160 AUD
View
B
Retailer 4
-
$4,194 AUD
View
Final sale: no returns
B+
Retailer 5
-
$4,401 AUD
View
Retailer 6
-
$4,782 AUD
View
Price last confirmed 37 days ago
B
Retailer 7
-
$4,889 AUD
View
Retailer 8
-
$4,966 AUD
View
Price last confirmed 39 days ago
B
Retailer 9
-
$5,197 AUD
View
B
Retailer 10
-
$5,197 AUD
View
Retailer 11
-
$5,517 AUD
View
Price last confirmed 39 days ago
Retailer 12
-
$5,653 AUD
View
Price last confirmed 36 days ago
B
Retailer 13
-
$5,769 AUD
View
Retailer 14
-
$5,979 AUD
View
Price last confirmed 37 days ago
B
Retailer 15
-
$6,127 AUD
View
B
Retailer 16
-
$6,203 AUD
View
Retailer 17
-
$6,363 AUD
View
Price last confirmed 38 days ago
Retailer 18
-
$8,932 AUD
View
Price last confirmed 37 days ago
Most Expensive
NZ Jewellers
bcf9dc78-1694-4342-af5e-fb6a715fbc54 · Sep 28
$9,195 AUD
$6,318 USD
View
Price last confirmed 39 days ago
18 more retailers have this diamond
Prices start from $4,053 AUDSave up to $2,150 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
$4,053 AUD