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1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 2428630036

Certificate GIA 2428630036

Diamond specifications and retailer prices

From $3,260 USD
As of November 5, 2026
Save $3,939 USD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,199 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2428630036. Listed at 11 retailers as of November 5, 2026, with prices from $3,260 to $7,199, a $3,939 spread on the same certified stone. NZ Jewellers lists it at $7,199. 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

1.51
Carat
M
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2428630036
Dimensions7.29 × 7.32 × 4.58 mm
L/W Ratio1.00
Top View
7.29 mm7.32 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2428630036
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,199 USD|Low: $3,260 USD|High: $7,199 USD|Avg: $4,320 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 14$3,260 USD
Retailer 3$3,348 USD
Retailer 5$3,586 USD
Retailer 12$3,636 USD
Retailer 6$4,123 USD
Retailer 8$4,132 USD
Retailer 9$4,132 USD
Retailer 10$4,132 USD
Retailer 13$4,279 USD
Retailer 7$4,638 USD
Retailer 11$4,768 USD
Retailer 4$4,916 USD
Retailer 2$5,323 USD
NZ Jewellers$7,199 USD

34 data points across 14 retailers

11 retailers$3,260 USD to $7,199 USD

B+
Cheapest Retailer
-
$3,260 USD
B
Retailer 2
-
$3,586 USD
View
B
Retailer 3
-
$3,636 USD
View
B
Retailer 4
-
$4,132 USD
View
Retailer 5
-
$4,132 USD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$4,132 USD
View
B
Retailer 7
-
$4,279 USD
View
B
Retailer 8
-
$4,638 USD
View
B
Retailer 9
-
$4,768 USD
View
B
Retailer 10
-
$5,323 USD
View
Most Expensive
C
NZ Jewellers
78ce4ef3-6b18-4628-9613-46d7894a51ad · Nov 5
$7,199 USD
View
10 more retailers have this diamond
Prices start from $3,260 USDSave up to $3,939 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.

B+
1.51ct Round
$3,260 USD