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Round|Natural|GIA

1.20ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2223191551

Certificate GIA 2223191551

Diamond specifications and retailer prices

From $2,049 AUD
As of November 6, 2026
Save $1,537 AUD (43%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,728 AUD at NZ Jewellers · As of October 27, 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 2223191551. Listed at 17 retailers as of November 5, 2026, with a 75% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2223191551
Dimensions6.80 × 6.77 × 4.26 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Etch Channel, Indented Natural
Top View
6.80 mm6.77 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2223191551
Side View
Table 58.0%Crown 34°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 62.7%

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: $6,728 AUD|Low: $2,030 AUD|High: $6,728 AUD|Avg: $3,437 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
November 6, 2026
Retailer 9$2,049 AUD
Retailer 12$2,554 AUD
Retailer 11$2,588 AUD
Retailer 3$2,758 AUD
Retailer 5$2,758 AUD
Retailer 2$2,842 AUD
Retailer 13$2,886 AUD
Retailer 4$3,183 AUD
Retailer 8$3,381 AUD
Retailer 7$3,487 AUD
Retailer 6$3,586 AUD
Retailer 10$4,838 AUD
NZ Jewellers$6,728 AUD

43 data points across 13 retailers

17 retailers$2,049 AUD to $3,586 AUD

A
Cheapest Retailer
-
$2,049 AUD
Retailer 2
-
$2,513 AUD
View
Price last confirmed 11 days ago
Retailer 3
-
$2,554 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$2,572 AUD
View
Retailer 5
-
$2,588 AUD
View
Price last confirmed 11 days ago
Retailer 6
-
$2,758 AUD
View
Price last confirmed 11 days ago
Retailer 7
-
$2,758 AUD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$2,842 AUD
View
Retailer 9
-
$2,886 AUD
View
Price last confirmed 12 days ago
Retailer 10
-
$2,957 AUD
View
Price last confirmed 12 days ago
Retailer 11
-
$3,183 AUD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$3,381 AUD
View
B+
Retailer 13
-
$3,487 AUD
View
B+
Retailer 14
-
$3,586 AUD
View
Retailer 15
-
$4,838 AUD
View
Price last confirmed 11 days ago
Retailer 16
-
$6,145 AUD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
88f601b3-e13a-4094-afb4-e3f1d8941dac · Oct 27
$6,728 AUD
$4,623 USD
View
Price last confirmed 10 days ago
16 more retailers have this diamond
Prices start from $2,049 AUDSave up to $1,537 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
$2,049 AUD