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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2537779753

Certificate GIA 2537779753

Diamond specifications and retailer prices

From $2,682 AUD
As of November 6, 2026
Save $3,436 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,399 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2537779753. Listed at 18 retailers as of November 4, 2026, with a 128% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2537779753
Dimensions6.83 × 6.79 × 4.19 mm
L/W Ratio1.01
Top View
6.83 mm6.79 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537779753
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,790 AUD|Low: $2,663 AUD|High: $6,274 AUD|Avg: $3,726 AUD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$2,682 AUD
Retailer 1$2,790 AUD
Retailer 7$3,132 AUD
Retailer 10$3,232 AUD
Retailer 3$3,333 AUD
Retailer 4$3,540 AUD
Retailer 12$3,609 AUD
Retailer 9$3,684 AUD
Retailer 5$3,705 AUD
Retailer 6$3,735 AUD
Retailer 8$4,344 AUD
Retailer 11$6,119 AUD

38 data points across 12 retailers

18 retailers$2,682 AUD to $6,119 AUD

A
Cheapest Retailer
-
$2,682 AUD
A
Retailer 2
-
$2,790 AUD
View
A
Retailer 3
-
$3,132 AUD
View
B+
Retailer 4
-
$3,232 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,333 AUD
View
B+
Retailer 6
-
$3,355 AUD
View
Retailer 7
-
$3,540 AUD
View
Price last confirmed 39 days ago
Retailer 8
-
$3,540 AUD
View
Price last confirmed 36 days ago
B+
Retailer 9
-
$3,609 AUD
View
B+
Retailer 10
-
$3,684 AUD
View
Retailer 11
-
$3,703 AUD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,705 AUD
View
B+
Retailer 13
-
$3,735 AUD
View
Retailer 14
-
$4,084 AUD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$4,344 AUD
View
B
Retailer 16
-
$6,119 AUD
View
Retailer 17
-
$7,399 AUD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
1419a2b3-5131-4a5f-b6a5-38c01a255356 · Sep 28
$7,399 AUD
$5,084 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $2,682 AUDSave up to $3,436 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
$2,682 AUD