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Round|Natural|IGI

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • IGI 425073127

Shape and cutting style on the report: Round brilliant

Certificate IGI 425073127

Diamond specifications and retailer prices

From $1,240 AUD
As of November 6, 2026
Save $2,621 AUD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,861 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 425073127. Listed at 14 retailers as of November 5, 2026, with prices from $1,240 to $3,861, a $2,621 spread on the same certified stone. NZ Jewellers lists it at $3,861. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40°
OriginNatural
Grading LabIGI
CertificateIGI 425073127
Dimensions6.76 × 6.80 × 4.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.76 mm6.80 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 425073127
Side View
Table 54.5%Crown 35.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,861 AUD|Low: $1,240 AUD|High: $3,861 AUD|Avg: $1,895 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
November 6, 2026
Retailer 2$1,240 AUD
Retailer 3$1,516 AUD
Retailer 7$1,556 AUD
Retailer 5$1,583 AUD
Retailer 12$1,583 AUD
Retailer 6$1,644 AUD
Retailer 4$1,774 AUD
Retailer 13$1,778 AUD
Retailer 11$1,827 AUD
Retailer 10$1,838 AUD
Retailer 9$1,931 AUD
Retailer 8$2,150 AUD
Retailer 14$2,371 AUD
NZ Jewellers$3,861 AUD

38 data points across 14 retailers

14 retailers$1,240 AUD to $3,861 AUD

A
Cheapest Retailer
-
$1,240 AUD
B+
Retailer 2
-
$1,516 AUD
View
A
Retailer 3
-
$1,556 AUD
View
Retailer 4
-
$1,583 AUD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$1,583 AUD
View
B+
Retailer 6
-
$1,644 AUD
View
B+
Retailer 7
-
$1,774 AUD
View
B+
Retailer 8
-
$1,778 AUD
View
B+
Retailer 9
-
$1,827 AUD
View
B+
Retailer 10
-
$1,838 AUD
View
B+
Retailer 11
-
$1,931 AUD
View
B+
Retailer 12
-
$2,150 AUD
View
B+
Retailer 13
-
$2,371 AUD
View
Most Expensive
B
NZ Jewellers
8721241d-33f3-4f5b-921a-9a0e1ce9782c · Nov 5
$3,861 AUD
$2,703 USD
View
13 more retailers have this diamond
Prices start from $1,240 AUDSave up to $2,621 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
$1,240 AUD