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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6422890913

Certificate GIA 6422890913

Diamond specifications and retailer prices

From $6,345 NZD
As of November 5, 2026
Save $6,461 NZD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,806 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 6422890913. Listed at 11 retailers as of November 5, 2026, with prices from $6,345 to $12,806, a $6,461 spread on the same certified stone. NZ Jewellers lists it at $12,806. 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 angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422890913
Dimensions7.36 × 7.40 × 4.56 mm
L/W Ratio1.01
Top View
7.36 mm7.40 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6422890913
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.7%

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: $12,806 NZD|Low: $6,345 NZD|High: $12,806 NZD|Avg: $8,211 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$6,345 NZD
Retailer 10$6,511 NZD
Retailer 5$7,350 NZD
Retailer 7$7,350 NZD
Retailer 9$7,350 NZD
Retailer 3$7,612 NZD
Retailer 4$8,263 NZD
Retailer 8$8,482 NZD
Retailer 11$8,745 NZD
Retailer 2$9,469 NZD
NZ Jewellers$12,806 NZD

38 data points across 11 retailers

11 retailers$6,345 NZD to $12,806 NZD

B+
Cheapest Retailer
-
$6,345 NZD
B+
Retailer 2
-
$6,379 NZD
View
B
Retailer 3
-
$6,468 NZD
View
B
Retailer 4
-
$7,350 NZD
View
Retailer 5
-
$7,350 NZD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$7,350 NZD
View
B
Retailer 7
-
$7,612 NZD
View
B
Retailer 8
-
$8,263 NZD
View
B
Retailer 9
-
$8,482 NZD
View
B
Retailer 10
-
$9,469 NZD
View
Most Expensive
C
NZ Jewellers
d38079af-364e-4d5f-9d9b-d33c6d7af822 · Nov 5
$12,806 NZD
$7,199 USD
View
10 more retailers have this diamond
Prices start from $6,345 NZDSave up to $6,461 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
$6,345 NZD