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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6551666431

Certificate GIA 6551666431

Diamond specifications and retailer prices

From $13,443 NZD
As of November 5, 2026
Save $10,656 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $24,098 NZD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551666431. Listed at 14 retailers as of November 5, 2026, with prices from $13,443 to $24,098, a $10,656 spread on the same certified stone. With Clarity lists it at $24,098. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.52°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 6551666431
Dimensions10.86 × 5.87 × 3.79 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.86 mm5.87 mm1.50 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551666431
Side View
Table 61.0%Crown 40.52°Girdle: VTN-VTKPavilion 39.55°Culet: NoneDepth 64.7%

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 5
Current: $17,736 NZD|Low: $13,443 NZD|High: $25,094 NZD|Avg: $17,212 NZD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 6, 2026
Retailer 9$13,443 NZD
Retailer 10$14,235 NZD
Retailer 7$14,456 NZD
Retailer 6$14,637 NZD
Retailer 8$14,796 NZD
Retailer 11$14,999 NZD
Retailer 5$15,171 NZD
Retailer 2$17,298 NZD
Retailer 12$17,458 NZD
Retailer 1$17,736 NZD
Retailer 4$17,891 NZD
Retailer 3$21,827 NZD
With Clarity$24,098 NZD

38 data points across 13 retailers

14 retailers$13,443 NZD to $24,098 NZD

A
Cheapest Retailer
-
$13,443 NZD
A
Retailer 2
-
$14,235 NZD
View
A
Retailer 3
-
$14,456 NZD
View
A
Retailer 4
-
$14,637 NZD
View
A
Retailer 5
-
$14,796 NZD
View
A
Retailer 6
-
$14,999 NZD
View
A
Retailer 7
-
$15,171 NZD
View
B+
Retailer 8
-
$17,298 NZD
View
B+
Retailer 9
-
$17,458 NZD
View
B+
Retailer 10
-
$17,736 NZD
View
B+
Retailer 11
-
$17,891 NZD
View
B+
Retailer 12
-
$19,387 NZD
View
B+
Retailer 13
-
$21,827 NZD
View
Most Expensive
B
With Clarity
6551666431 · Nov 6
$24,098 NZD
$13,359 USD
View
13 more retailers have this diamond
Prices start from $13,443 NZDSave up to $10,656 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
1.50ct Marquise
$13,443 NZD