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Round|Natural|IGI

1.20ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 803628993

Shape and cutting style on the report: Round brilliant

Certificate IGI 803628993

Diamond specifications and retailer prices

From $1,825 AUD
As of November 6, 2026
Save $3,052 AUD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,024 AUD at NZ Jewellers · As of September 28, 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 IGI 803628993. Listed at 19 retailers as of November 5, 2026, with a 167% 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
FluorescenceNone
Crown angle36.7°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 803628993
Dimensions6.67 × 6.72 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.67 mm6.72 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803628993
Side View
Table 58.0%Crown 36.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.6%

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: $1,825 AUD|Low: $1,802 AUD|High: $3,818 AUD|Avg: $2,404 AUD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$1,825 AUD
Retailer 2$1,911 AUD
Retailer 8$2,059 AUD
Retailer 7$2,084 AUD
Retailer 6$2,109 AUD
Retailer 3$2,166 AUD
Retailer 9$2,451 AUD
Retailer 5$2,774 AUD
Retailer 4$3,652 AUD

44 data points across 9 retailers

19 retailers$1,825 AUD to $4,877 AUD

A
Cheapest Retailer
-
$1,825 AUD
A
Retailer 2
-
$1,911 AUD
View
Retailer 3
-
$2,059 AUD
View
Price last confirmed 8 days ago
Retailer 4
-
$2,059 AUD
View
Price last confirmed 15 days ago
Retailer 5
-
$2,059 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$2,059 AUD
View
Price last confirmed 36 days ago
A
Retailer 7
-
$2,084 AUD
View
A
Retailer 8
-
$2,109 AUD
View
Retailer 9
-
$2,155 AUD
View
Price last confirmed 38 days ago
A
Retailer 10
-
$2,166 AUD
View
Retailer 11
-
$2,377 AUD
View
Price last confirmed 38 days ago
Retailer 12
-
$2,377 AUD
View
Price last confirmed 16 days ago
Retailer 13
-
$2,377 AUD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$2,774 AUD
View
B+
Retailer 15
-
$3,652 AUD
View
B
Retailer 16
-
$4,877 AUD
View
Retailer 17
-
$5,024 AUD
View
Price last confirmed 10 days ago
Retailer 18
-
$5,024 AUD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
48af8185-65f5-4ba9-b70e-8faae379f675 · Sep 28
$5,024 AUD
$3,452 USD
View
Price last confirmed 39 days ago
18 more retailers have this diamond
Prices start from $1,825 AUDSave up to $3,052 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
$1,825 AUD