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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2554750922

Certificate GIA 2554750922

Diamond specifications and retailer prices

From $2,380 AUD
As of November 6, 2026
Save $3,317 AUD (58%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,878 AUD at NZ Jewellers · As of October 3, 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 2554750922. Listed at 21 retailers as of November 4, 2026, with a 139% 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
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2554750922
Dimensions6.69 × 6.73 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.69 mm6.73 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554750922
Side View
Table 56.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 63.7%

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: $2,642 AUD|Low: $2,365 AUD|High: $5,833 AUD|Avg: $3,370 AUD|-1.0%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 6$2,380 AUD
Retailer 7$2,476 AUD
Retailer 4$2,477 AUD
Retailer 1$2,642 AUD
Retailer 13$2,701 AUD
Retailer 3$2,719 AUD
Retailer 5$2,764 AUD
Retailer 9$3,090 AUD
Retailer 8$3,366 AUD
Retailer 2$3,406 AUD
Retailer 15$3,406 AUD
Retailer 11$3,489 AUD
Retailer 10$3,508 AUD
Retailer 14$3,941 AUD
Retailer 12$4,112 AUD
Retailer 16$5,696 AUD

27 data points across 16 retailers

21 retailers$2,380 AUD to $5,696 AUD

A
Cheapest Retailer
-
$2,380 AUD
Retailer 2
-
$2,476 AUD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$2,477 AUD
View
A
Retailer 4
-
$2,642 AUD
View
A
Retailer 5
-
$2,701 AUD
View
Final sale: no returns
A
Retailer 6
-
$2,719 AUD
View
A
Retailer 7
-
$2,764 AUD
View
A
Retailer 8
-
$3,090 AUD
View
Retailer 9
-
$3,260 AUD
View
Price last confirmed 21 days ago
Retailer 10
-
$3,291 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$3,366 AUD
View
Price last confirmed 21 days ago
B+
Retailer 12
-
$3,406 AUD
View
B+
Retailer 13
-
$3,406 AUD
View
Retailer 14
-
$3,410 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$3,489 AUD
View
B+
Retailer 16
-
$3,508 AUD
View
Retailer 17
-
$3,761 AUD
View
Price last confirmed 21 days ago
B+
Retailer 18
-
$3,941 AUD
View
B+
Retailer 19
-
$4,112 AUD
View
B
Retailer 20
-
$5,696 AUD
View
Most Expensive
NZ Jewellers
e55c1379-2256-414d-a26b-5ea956badb91 · Oct 3
$6,878 AUD
$4,726 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $2,380 AUDSave up to $3,317 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
$2,380 AUD