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Round|Natural|GIA

1.31ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 7502345420

Certificate GIA 7502345420

Diamond specifications and retailer prices

From $1,658 USD
As of November 5, 2026
Save $2,780 USD (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,438 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct 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 GIA 7502345420. Listed at 11 retailers as of November 5, 2026, with prices from $1,658 to $4,438, a $2,780 spread on the same certified stone. NZ Jewellers lists it at $4,438. 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

1.31
Carat
M
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7502345420
Dimensions6.94 × 6.99 × 4.34 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.94 mm6.99 mm1.31 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7502345420
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.3%

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: $4,438 USD|Low: $1,658 USD|High: $4,520 USD|Avg: $2,268 USD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 10$1,658 USD
Retailer 4$1,696 USD
Retailer 5$1,820 USD
Retailer 9$1,820 USD
Retailer 7$1,875 USD
Retailer 6$1,904 USD
Retailer 8$1,956 USD
Retailer 2$2,220 USD
Retailer 11$2,488 USD
Retailer 3$2,606 USD
Retailer 12$3,053 USD
NZ Jewellers$4,438 USD

15 data points across 12 retailers

11 retailers$1,658 USD to $4,438 USD

A
Cheapest Retailer
-
$1,658 USD
A
Retailer 2
-
$1,820 USD
View
Retailer 3
-
$1,820 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$1,853 USD
View
Price last confirmed 60 days ago
A
Retailer 5
-
$1,875 USD
View
B+
Retailer 6
-
$1,904 USD
View
B+
Retailer 7
-
$1,956 USD
View
Retailer 8
-
$2,099 USD
View
Price last confirmed 68 days ago
B+
Retailer 9
-
$2,220 USD
View
Retailer 10
-
$4,438 USD
View
Price last confirmed 66 days ago
Most Expensive
C
NZ Jewellers
e160ed7e-f912-4ae8-aaa7-d6b85ca2b835 · Nov 5
$4,438 USD
View
10 more retailers have this diamond
Prices start from $1,658 USDSave up to $2,780 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
1.31ct Round
$1,658 USD