Round|Natural|IGI

1.30ct M SI1 Round Natural Diamond

EX • M/SI1 • IGI 644482852

Shape and cutting style on the report: Round brilliant

Certificate IGI 644482852

Diamond specifications and retailer prices

From $1,590 USD
As of November 1, 2026
Save $860 USD (35%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,411 USD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 644482852. Listed at 13 retailers as of November 1, 2026, with a 54% 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

1.30
Carat
M
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 644482852
Dimensions7.00 × 7.08 × 4.27 mm
L/W Ratio1.01
Girdle conditionPARTLY FACETED
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.00 mm7.08 mm1.30 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 644482852
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.6%

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 1
Current: $1,778 USD|Low: $1,590 USD|High: $2,940 USD|Avg: $2,010 USD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,590 USD
Retailer 7$1,647 USD
Retailer 10$1,757 USD
Retailer 1$1,778 USD
Retailer 9$1,818 USD
Retailer 6$1,865 USD
Retailer 8$1,945 USD
Retailer 4$2,207 USD
Retailer 3$2,450 USD
Retailer 2$2,940 USD

40 data points across 10 retailers

13 retailers$1,590 USD to $2,450 USD

A
Cheapest Retailer
-
$1,590 USD
A
Retailer 2
-
$1,647 USD
View
A
Retailer 3
-
$1,778 USD
View
Retailer 4
-
$1,808 USD
View
Price last confirmed 29 days ago
Retailer 5
-
$1,808 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$1,818 USD
View
B+
Retailer 7
-
$1,865 USD
View
Retailer 8
-
$1,892 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$1,945 USD
View
Retailer 10
-
$2,087 USD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$2,207 USD
View
B
Retailer 12
-
$2,450 USD
View
Most Expensive
NZ Jewellers
a750e670-a474-4328-8b35-0c131e10cc91 · Sep 26
$4,411 USD
View
Price last confirmed 40 days ago
12 more retailers have this diamond
Prices start from $1,590 USDSave up to $860 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
1.30ct Round
$1,590 USD