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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6561440326

Certificate GIA 6561440326

Diamond specifications and retailer prices

From $3,659 NZD
As of November 5, 2026
Save $3,468 NZD (49%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,127 NZD at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561440326. Listed at 9 retailers as of November 4, 2026, with prices from $3,659 to $7,127, a $3,468 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,127. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6561440326
Dimensions7.33 × 4.55 × 4.55 mm
L/W Ratio1.61
Culet sizeNone
Top View
7.33 mm4.55 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561440326
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

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 5
Current: $3,659 NZD|Low: $3,640 NZD|High: $8,066 NZD|Avg: $5,408 NZD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 5, 2026
Retailer 1$3,659 NZD
Retailer 7$4,349 NZD
Retailer 4$4,549 NZD
Retailer 6$4,549 NZD
Retailer 3$4,613 NZD
Retailer 2$5,216 NZD
Retailer 5$5,410 NZD
Retailer 8$5,689 NZD
Wholesale Diamonds Direct$7,127 NZD

18 data points across 9 retailers

9 retailers$3,659 NZD to $7,127 NZD

A
Cheapest Retailer
-
$3,659 NZD
A
Retailer 2
-
$4,349 NZD
View
A
Retailer 3
-
$4,549 NZD
View
A
Retailer 4
-
$4,549 NZD
View
A
Retailer 5
-
$4,613 NZD
View
A
Retailer 6
-
$5,216 NZD
View
A
Retailer 7
-
$5,410 NZD
View
Retailer 8
-
$5,689 NZD
View
Price last confirmed 11 days ago
Most Expensive
B+
Wholesale Diamonds Direct
570704302 · Nov 4
$7,127 NZD
$4,007 USD
View
8 more retailers have this diamond
Prices start from $3,659 NZDSave up to $3,468 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.

A
1.51ct Round
$3,659 NZD