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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 1549494456

Certificate GIA 1549494456

Diamond specifications and retailer prices

From $20,540 NZD
$11,557 USD
As of November 2, 2026
Save $14,970 NZD (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $35,510 NZD at MOH London · As of November 1, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549494456. Listed at 14 retailers as of November 1, 2026, with prices from $20,540 to $35,510, a $14,970 spread on the same certified stone. MOH London lists it at $35,510. 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

1.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549494456
Dimensions11.44 × 5.88 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
11.44 mm5.88 mm1.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549494456
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

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 2
Current: $35,510 NZD|Low: $20,307 NZD|High: $35,939 NZD|Avg: $26,331 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$20,540 NZD
Retailer 4$21,788 NZD
Retailer 5$24,253 NZD
Retailer 3$24,510 NZD
Retailer 8$24,632 NZD
Retailer 10$25,579 NZD
Retailer 9$25,751 NZD
Retailer 2$28,640 NZD
Retailer 7$32,210 NZD
MOH London$35,510 NZD

43 data points across 10 retailers

14 retailers$20,540 NZD to $35,510 NZD

B+
Cheapest Retailer
-
$20,540 NZD
$11,557 USD
B+
Retailer 2
-
$21,304 NZD
$11,987 USD
View
B+
Retailer 3
-
$21,630 NZD
A$18,723 AUD
View
B+
Retailer 4
-
$21,788 NZD
$12,259 USD
View
Final sale: no returns
B+
Retailer 5
-
$21,981 NZD
$12,367 USD
View
B+
Retailer 6
-
$24,253 NZD
$13,646 USD
View
B+
Retailer 7
-
$24,510 NZD
£10,859 GBP
View
B+
Retailer 8
-
$24,632 NZD
$13,859 USD
View
B+
Retailer 9
-
$25,579 NZD
$14,392 USD
View
B
Retailer 10
-
$25,751 NZD
$14,489 USD
View
B
Retailer 11
-
$26,943 NZD
$15,159 USD
View
B
Retailer 12
-
$28,640 NZD
€15,347 EUR
View
B
Retailer 13
-
$32,210 NZD
$18,123 USD
View
Most Expensive
B
MOH London
4652BB7B6 · Nov 1
$35,510 NZD
£15,732 GBP
View
13 more retailers have this diamond
Prices start from $20,540 NZDSave up to $14,970 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+
1.50ct Marquise
$20,540 NZD