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Round|Natural|GIA

1.20ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 1519135113

Certificate GIA 1519135113

Diamond specifications and retailer prices

From $4,495 AUD
As of November 5, 2026
Save $5,528 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,024 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519135113. Listed at 19 retailers as of November 5, 2026, with prices from $4,495 to $10,024, a $5,528 spread on the same certified stone. NZ Jewellers lists it at $10,024. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1519135113
Dimensions6.78 × 6.74 × 4.23 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
6.78 mm6.74 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1519135113
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 5
Current: $10,024 AUD|Low: $3,847 AUD|High: $10,024 AUD|Avg: $5,954 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
November 6, 2026
Retailer 16$4,495 AUD
Retailer 13$4,514 AUD
Retailer 4$4,627 AUD
Retailer 5$4,810 AUD
Retailer 8$5,213 AUD
Retailer 9$5,213 AUD
Retailer 17$5,215 AUD
Retailer 15$5,413 AUD
Retailer 2$5,757 AUD
Retailer 6$5,814 AUD
Retailer 14$5,814 AUD
Retailer 10$5,957 AUD
Retailer 7$6,014 AUD
Retailer 11$6,294 AUD
Retailer 3$6,511 AUD
Retailer 12$9,622 AUD
NZ Jewellers$10,024 AUD

40 data points across 17 retailers

19 retailers$4,495 AUD to $10,024 AUD

A
Cheapest Retailer
-
$4,495 AUD
A
Retailer 2
-
$4,514 AUD
View
A
Retailer 3
-
$4,627 AUD
View
A
Retailer 4
-
$4,783 AUD
View
A
Retailer 5
-
$4,810 AUD
View
Final sale: no returns
Retailer 6
-
$5,213 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$5,213 AUD
View
B+
Retailer 8
-
$5,215 AUD
View
B+
Retailer 9
-
$5,413 AUD
View
B+
Retailer 10
-
$5,757 AUD
View
B+
Retailer 11
-
$5,814 AUD
View
B+
Retailer 12
-
$5,814 AUD
View
B+
Retailer 13
-
$5,957 AUD
View
B+
Retailer 14
-
$6,014 AUD
View
B+
Retailer 15
-
$6,294 AUD
View
Retailer 16
-
$6,511 AUD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$7,728 AUD
View
B
Retailer 18
-
$9,622 AUD
View
Most Expensive
B
NZ Jewellers
104469b4-e5b0-4a20-9683-10f1b98ad42c · Nov 5
$10,024 AUD
$7,017 USD
View
18 more retailers have this diamond
Prices start from $4,495 AUDSave up to $5,528 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
$4,495 AUD