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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2507070551

Certificate GIA 2507070551

Diamond specifications and retailer prices

From $2,179 AUD
As of November 6, 2026
Save $4,906 AUD (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,085 AUD at NZ Jewellers · As of November 5, 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 2507070551. Listed at 19 retailers as of November 5, 2026, with prices from $2,179 to $7,085, a $4,906 spread on the same certified stone. NZ Jewellers lists it at $7,085. 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 angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2507070551
Dimensions6.77 × 6.73 × 4.26 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
6.77 mm6.73 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507070551
Side View
Table 56.0%Crown 36°Girdle: Sli. ThickPavilion 41.2°Culet: NoneDepth 63.3%

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: $7,085 AUD|Low: $2,160 AUD|High: $7,085 AUD|Avg: $3,309 AUD
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
November 6, 2026
Retailer 16$2,179 AUD
Retailer 2$2,198 AUD
Retailer 15$2,554 AUD
Retailer 7$2,624 AUD
Retailer 10$2,758 AUD
Retailer 11$2,778 AUD
Retailer 8$2,886 AUD
Retailer 6$2,905 AUD
Retailer 17$2,905 AUD
Retailer 18$3,039 AUD
Retailer 9$3,042 AUD
Retailer 5$3,104 AUD
Retailer 12$3,136 AUD
Retailer 4$3,352 AUD
Retailer 13$3,732 AUD
Retailer 3$4,229 AUD
Retailer 14$5,075 AUD
NZ Jewellers$7,085 AUD

23 data points across 18 retailers

19 retailers$2,179 AUD to $7,085 AUD

A
Cheapest Retailer
-
$2,179 AUD
A
Retailer 2
-
$2,198 AUD
View
A
Retailer 3
-
$2,554 AUD
View
A
Retailer 4
-
$2,624 AUD
View
Retailer 5
-
$2,634 AUD
View
Price last confirmed 109 days ago
Retailer 6
-
$2,758 AUD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$2,778 AUD
View
A
Retailer 8
-
$2,886 AUD
View
B+
Retailer 9
-
$2,905 AUD
View
Retailer 10
-
$2,905 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$3,039 AUD
View
Retailer 12
-
$3,042 AUD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
$3,104 AUD
View
B+
Retailer 14
-
$3,136 AUD
View
B+
Retailer 15
-
$3,352 AUD
View
B+
Retailer 16
-
$3,732 AUD
View
B
Retailer 17
-
$4,229 AUD
View
B
Retailer 18
-
$5,075 AUD
View
Most Expensive
C
NZ Jewellers
f681003a-2f6a-4e28-bfee-41408dd3dba0 · Nov 5
$7,085 AUD
$4,868 USD
View
18 more retailers have this diamond
Prices start from $2,179 AUDSave up to $4,906 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
$2,179 AUD