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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 $872 USD
As of November 5, 2026
Save $1,831 USD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,703 USD 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 $872 to $2,703, a $1,831 spread on the same certified stone. NZ Jewellers lists it at $2,703. 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
Color
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 5
Current: $2,703 USD|Low: $872 USD|High: $2,703 USD|Avg: $1,327 USD
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 8$872 USD
Retailer 3$1,061 USD
Retailer 2$1,089 USD
Retailer 5$1,108 USD
Retailer 12$1,108 USD
Retailer 6$1,151 USD
Retailer 4$1,242 USD
Retailer 13$1,245 USD
Retailer 11$1,279 USD
Retailer 10$1,287 USD
Retailer 9$1,352 USD
Retailer 7$1,505 USD
Retailer 14$1,660 USD
NZ Jewellers$2,703 USD

38 data points across 14 retailers

14 retailers$872 USD to $2,703 USD

A
Cheapest Retailer
-
$872 USD
B+
Retailer 2
-
$1,061 USD
View
A
Retailer 3
-
$1,089 USD
View
Retailer 4
-
$1,108 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$1,108 USD
View
B+
Retailer 6
-
$1,151 USD
View
B+
Retailer 7
-
$1,242 USD
View
B+
Retailer 8
-
$1,245 USD
View
B+
Retailer 9
-
$1,279 USD
View
B+
Retailer 10
-
$1,287 USD
View
B+
Retailer 11
-
$1,352 USD
View
B+
Retailer 12
-
$1,505 USD
View
B+
Retailer 13
-
$1,660 USD
View
Most Expensive
B
NZ Jewellers
8721241d-33f3-4f5b-921a-9a0e1ce9782c · Nov 5
$2,703 USD
View
13 more retailers have this diamond
Prices start from $872 USDSave up to $1,831 USD

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
$872 USD