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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 7508361844

Certificate GIA 7508361844

Diamond specifications and retailer prices

From $4,791 NZD
As of November 4, 2026
Save $6,393 NZD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,184 NZD 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 7508361844. Listed at 13 retailers as of November 4, 2026, with prices from $4,791 to $11,184, a $6,393 spread on the same certified stone. NZ Jewellers lists it at $11,184. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7508361844
Dimensions7.30 × 7.35 × 4.62 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Feather, Twinning Wisp, Crystal, Needle
Top View
7.30 mm7.35 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7508361844
Side View
Table 56.0%Crown 34.5°Girdle: STK-MEDPavilion 41.6°Culet: NoneDepth 63.0%

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 4
Current: $11,184 NZD|Low: $4,791 NZD|High: $11,184 NZD|Avg: $6,234 NZD
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 6, 2026
Retailer 7$4,791 NZD
Retailer 9$4,940 NZD
Retailer 11$5,349 NZD
Retailer 12$5,349 NZD
Retailer 6$5,556 NZD
Retailer 4$5,602 NZD
Retailer 5$5,858 NZD
Retailer 8$6,112 NZD
Retailer 10$6,173 NZD
Retailer 3$6,365 NZD
Retailer 2$7,060 NZD
NZ Jewellers$11,184 NZD

35 data points across 12 retailers

13 retailers$4,791 NZD to $11,184 NZD

B+
Cheapest Retailer
-
$4,791 NZD
B+
Retailer 2
-
$4,940 NZD
View
Retailer 3
-
$5,349 NZD
View
Price last confirmed 60 days ago
Retailer 4
-
$5,349 NZD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$5,349 NZD
View
B+
Retailer 6
-
$5,556 NZD
View
B+
Retailer 7
-
$5,602 NZD
View
B+
Retailer 8
-
$5,858 NZD
View
B
Retailer 9
-
$6,112 NZD
View
Retailer 10
-
$6,173 NZD
View
Price last confirmed 60 days ago
B
Retailer 11
-
$6,173 NZD
View
B
Retailer 12
-
$7,060 NZD
View
Most Expensive
C
NZ Jewellers
c14ff665-9328-4d6b-9dba-aea7e48398d8 · Nov 5
$11,184 NZD
$6,287 USD
View
12 more retailers have this diamond
Prices start from $4,791 NZDSave up to $6,393 NZD

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
$4,791 NZD