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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 2245057622

Certificate GIA 2245057622

Diamond specifications and retailer prices

From $13,028 NZD
As of November 3, 2026
Save $7,993 NZD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $21,021 NZD at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245057622. Listed at 12 retailers as of November 3, 2026, with prices from $13,028 to $21,021, a $7,993 spread on the same certified stone. Helzberg Diamonds lists it at $21,021. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.37°
Pavilion angle41.86°
OriginNatural
Grading LabGIA
CertificateGIA 2245057622
Dimensions11.44 × 6.05 × 3.87 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.44 mm6.05 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2245057622
Side View
Table 58.0%Crown 36.37°Girdle: STK-THKPavilion 41.86°Culet: NoneDepth 64.1%

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 3
Current: $21,021 NZD|Low: $13,028 NZD|High: $22,641 NZD|Avg: $16,358 NZD|-7.2%
Helzberg Diamonds
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 9$13,028 NZD
Retailer 11$13,320 NZD
Retailer 12$13,827 NZD
Retailer 5$13,913 NZD
Retailer 3$14,067 NZD
Retailer 4$14,260 NZD
Retailer 10$14,280 NZD
Retailer 8$16,172 NZD
Retailer 7$16,603 NZD
Retailer 6$18,136 NZD
Retailer 2$19,203 NZD
Helzberg Diamonds$21,021 NZD

39 data points across 12 retailers

12 retailers$13,028 NZD to $21,021 NZD

A
Cheapest Retailer
-
$13,028 NZD
A
Retailer 2
-
$13,320 NZD
View
A
Retailer 3
-
$13,827 NZD
View
A
Retailer 4
-
$13,913 NZD
View
A
Retailer 5
-
$14,067 NZD
View
A
Retailer 6
-
$14,260 NZD
View
A
Retailer 7
-
$14,280 NZD
View
A
Retailer 8
-
$16,172 NZD
View
A
Retailer 9
-
$16,603 NZD
View
B+
Retailer 10
-
$18,136 NZD
View
B+
Retailer 11
-
$19,203 NZD
View
Most Expensive
B+
Helzberg Diamonds
XZRIIKLGLNMII · Nov 3
$21,021 NZD
$11,653 USD
View
11 more retailers have this diamond
Prices start from $13,028 NZDSave up to $7,993 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 Marquise
$13,028 NZD