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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6402308841

Certificate GIA 6402308841

Diamond specifications and retailer prices

From $3,821 AUD
As of November 6, 2026
Save $5,093 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,914 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6402308841. Listed at 15 retailers as of November 5, 2026, with prices from $3,821 to $8,914, a $5,093 spread on the same certified stone. NZ Jewellers lists it at $8,914. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6402308841
Dimensions6.90 × 6.88 × 4.14 mm
L/W Ratio1.00
Top View
6.90 mm6.88 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6402308841
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.1%

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: $8,914 AUD|Low: $3,784 AUD|High: $8,914 AUD|Avg: $5,556 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
November 6, 2026
Retailer 12$3,821 AUD
Retailer 5$4,541 AUD
Retailer 6$4,637 AUD
Retailer 4$4,723 AUD
Retailer 2$4,895 AUD
Retailer 13$5,117 AUD
Retailer 15$5,117 AUD
Retailer 7$5,128 AUD
Retailer 9$5,263 AUD
Retailer 8$5,313 AUD
Retailer 14$5,314 AUD
Retailer 3$5,904 AUD
Retailer 10$5,944 AUD
Retailer 11$8,534 AUD
NZ Jewellers$8,914 AUD

33 data points across 15 retailers

15 retailers$3,821 AUD to $8,914 AUD

A
Cheapest Retailer
-
$3,821 AUD
A
Retailer 2
-
$4,541 AUD
View
A
Retailer 3
-
$4,637 AUD
View
B+
Retailer 4
-
$4,723 AUD
View
Final sale: no returns
A
Retailer 5
-
$4,895 AUD
View
B+
Retailer 6
-
$5,117 AUD
View
Retailer 7
-
$5,117 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$5,128 AUD
View
B+
Retailer 9
-
$5,263 AUD
View
B+
Retailer 10
-
$5,313 AUD
View
B+
Retailer 11
-
$5,314 AUD
View
B+
Retailer 12
-
$5,904 AUD
View
B+
Retailer 13
-
$5,944 AUD
View
B
Retailer 14
-
$8,534 AUD
View
Most Expensive
B
NZ Jewellers
7f20be6f-6c8b-4fbf-8960-46686ad9de07 · Nov 5
$8,914 AUD
$6,240 USD
View
14 more retailers have this diamond
Prices start from $3,821 AUDSave up to $5,093 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
$3,821 AUD