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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1529681089

Certificate GIA 1529681089

Diamond specifications and retailer prices

From $3,819 AUD
As of November 6, 2026
Save $4,950 AUD (56%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $8,769 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1529681089. Listed at 26 retailers as of November 5, 2026, with prices from $3,819 to $8,769, a $4,950 spread on the same certified stone. NZ Jewellers lists it at $8,769. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1529681089
Dimensions6.76 × 6.72 × 4.23 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds are not shown. Additional pinpoints are not shown.
Key to symbols
Crystal, Cloud, Feather, Needle, Pinpoint
Top View
6.76 mm6.72 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529681089
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: $8,769 AUD|Low: $3,781 AUD|High: $8,911 AUD|Avg: $5,206 AUD|-1.6%
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 22$3,819 AUD
Retailer 4$3,950 AUD
Retailer 6$3,966 AUD
Retailer 23$3,991 AUD
Retailer 3$4,020 AUD
Retailer 12$4,129 AUD
Retailer 17$4,170 AUD
Retailer 7$4,205 AUD
Retailer 9$4,432 AUD
Retailer 8$4,560 AUD
Retailer 14$4,560 AUD
Retailer 16$4,660 AUD
Retailer 11$4,736 AUD
Retailer 2$4,816 AUD
Retailer 13$5,145 AUD
Retailer 10$5,181 AUD
Retailer 15$5,181 AUD
Retailer 24$5,261 AUD
Retailer 5$5,356 AUD
Retailer 19$5,494 AUD
Retailer 18$6,143 AUD
Retailer 21$7,265 AUD
Retailer 20$8,395 AUD
NZ Jewellers$8,769 AUD

21 data points across 24 retailers

26 retailers$3,819 AUD to $8,769 AUD

A
Cheapest Retailer
-
$3,819 AUD
A
Retailer 2
-
$3,950 AUD
View
A
Retailer 3
-
$3,966 AUD
View
A
Retailer 4
-
$3,991 AUD
View
A
Retailer 5
-
$4,020 AUD
View
A
Retailer 6
-
$4,129 AUD
View
Final sale: no returns
Retailer 7
-
$4,170 AUD
View
Price last confirmed 17 days ago
A
Retailer 8
-
$4,205 AUD
View
B+
Retailer 9
-
$4,432 AUD
View
B+
Retailer 10
-
$4,560 AUD
View
Retailer 11
-
$4,560 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$4,660 AUD
View
B+
Retailer 13
-
$4,736 AUD
View
B+
Retailer 14
-
$4,816 AUD
View
B+
Retailer 15
-
$5,145 AUD
View
B+
Retailer 16
-
$5,181 AUD
View
B+
Retailer 17
-
$5,181 AUD
View
B+
Retailer 18
-
$5,261 AUD
View
B+
Retailer 19
-
$5,356 AUD
View
Retailer 20
-
$5,440 AUD
View
Price last confirmed 34 days ago
B+
Retailer 21
-
$5,494 AUD
View
Retailer 22
-
$5,750 AUD
View
Price last confirmed 15 days ago
B+
Retailer 23
-
$6,143 AUD
View
B
Retailer 24
-
$7,265 AUD
View
B
Retailer 25
-
$8,395 AUD
View
Most Expensive
B
NZ Jewellers
6ce402cb-b0dc-4558-a70e-96c4bf8bd3c9 · Nov 5
$8,769 AUD
$6,025 USD
View
25 more retailers have this diamond
Prices start from $3,819 AUDSave up to $4,950 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
$3,819 AUD