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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 5553731926

Certificate GIA 5553731926

Diamond specifications and retailer prices

From $15,892 NZD
$8,957 USD
As of November 2, 2026
Save $9,727 NZD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $25,619 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553731926. Listed at 9 retailers as of October 30, 2026, with prices from $15,892 to $25,619, a $9,727 spread on the same certified stone. NZ Jewellers lists it at $25,619. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553731926
Dimensions10.94 × 5.98 × 3.80 mm
L/W Ratio1.83
Top View
10.94 mm5.98 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553731926
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $25,619 NZD|Low: $15,892 NZD|High: $25,834 NZD|Avg: $18,671 NZD|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$15,892 NZD
Retailer 5$15,933 NZD
Retailer 6$16,057 NZD
Retailer 9$17,027 NZD
Retailer 2$17,197 NZD
Retailer 8$18,382 NZD
Retailer 7$18,664 NZD
Retailer 3$24,007 NZD
NZ Jewellers$25,619 NZD

18 data points across 9 retailers

9 retailers$15,892 NZD to $25,619 NZD

A
Cheapest Retailer
-
$15,892 NZD
$8,957 USD
A
Retailer 2
-
$15,933 NZD
$8,980 USD
View
A
Retailer 3
-
$16,057 NZD
$9,050 USD
View
Retailer 4
-
$17,027 NZD
A$14,764 AUD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$17,197 NZD
£7,632 GBP
View
B+
Retailer 6
-
$18,382 NZD
$10,360 USD
View
B+
Retailer 7
-
$18,664 NZD
$10,519 USD
View
B+
Retailer 8
-
$24,007 NZD
£10,654 GBP
View
Most Expensive
B
NZ Jewellers
5382c10c-e26f-43bf-a2f9-6991835ace68 · Oct 30
$25,619 NZD
$14,439 USD
View
8 more retailers have this diamond
Prices start from $15,892 NZDSave up to $9,727 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
$15,892 NZD