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Round|Natural|GIA

1.20ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2487290910

Certificate GIA 2487290910

Diamond specifications and retailer prices

From $2,745 AUD
As of November 6, 2026
Save $4,873 AUD (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,618 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2487290910. Listed at 12 retailers as of November 5, 2026, with prices from $2,745 to $7,618, a $4,873 spread on the same certified stone. NZ Jewellers lists it at $7,618. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2487290910
Dimensions6.84 × 6.81 × 4.12 mm
L/W Ratio1.00
Top View
6.84 mm6.81 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2487290910
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.3%

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: $7,618 AUD|Low: $2,745 AUD|High: $7,618 AUD|Avg: $4,476 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$2,745 AUD
Retailer 8$3,301 AUD
Retailer 10$3,301 AUD
Retailer 7$3,454 AUD
Retailer 9$3,809 AUD
Retailer 2$3,832 AUD
Retailer 3$4,250 AUD
Retailer 4$4,315 AUD
Retailer 5$6,367 AUD
NZ Jewellers$7,618 AUD

41 data points across 10 retailers

12 retailers$2,745 AUD to $7,618 AUD

A
Cheapest Retailer
-
$2,745 AUD
A
Retailer 2
-
$2,982 AUD
View
Retailer 3
-
$3,301 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$3,301 AUD
View
B+
Retailer 5
-
$3,454 AUD
View
B+
Retailer 6
-
$3,576 AUD
View
B+
Retailer 7
-
$3,809 AUD
View
B+
Retailer 8
-
$3,832 AUD
View
B
Retailer 9
-
$4,250 AUD
View
B+
Retailer 10
-
$4,315 AUD
View
B
Retailer 11
-
$6,367 AUD
View
Most Expensive
B
NZ Jewellers
ee68daaf-70f5-4bc3-a457-0ed156f73fcc · Nov 5
$7,618 AUD
$5,234 USD
View
11 more retailers have this diamond
Prices start from $2,745 AUDSave up to $4,873 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
$2,745 AUD