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Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

ID • I/SI1 • GIA 5553439824

Certificate GIA 5553439824

Diamond specifications and retailer prices

From $13,401 NZD
$7,540 USD
As of November 1, 2026
Save $9,882 NZD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $23,283 NZD at MOH London · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553439824. Listed at 15 retailers as of November 1, 2026, with prices from $13,401 to $23,283, a $9,882 spread on the same certified stone. MOH London lists it at $23,283. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5553439824
Dimensions11.24 × 5.92 × 3.77 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Cavity, Natural, Extra Facet
Top View
11.24 mm5.92 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5553439824
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.7%

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 1
Current: $23,283 NZD|Low: $13,401 NZD|High: $23,565 NZD|Avg: $17,208 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 3, 2026
Retailer 3$13,401 NZD
Retailer 13$14,586 NZD
Retailer 9$14,687 NZD
Retailer 10$15,526 NZD
Retailer 2$16,453 NZD
Retailer 8$16,721 NZD
Retailer 14$16,785 NZD
Retailer 11$17,318 NZD
Retailer 4$17,809 NZD
Retailer 6$17,809 NZD
Retailer 12$18,262 NZD
Retailer 5$18,395 NZD
Retailer 7$18,703 NZD
MOH London$23,283 NZD

31 data points across 14 retailers

15 retailers$13,401 NZD to $23,283 NZD

B+
Cheapest Retailer
-
$13,401 NZD
$7,540 USD
B+
Retailer 2
-
$14,586 NZD
$8,207 USD
View
B+
Retailer 3
-
$14,687 NZD
CA$11,477 CAD
View
B
Retailer 4
-
$15,526 NZD
$8,736 USD
View
B
Retailer 5
-
$16,453 NZD
£7,289 GBP
View
B
Retailer 6
-
$16,584 NZD
CA$12,960 CAD
View
B
Retailer 7
-
$16,721 NZD
$9,408 USD
View
B
Retailer 8
-
$16,785 NZD
$9,444 USD
View
B
Retailer 9
-
$17,318 NZD
$9,744 USD
View
B
Retailer 10
-
$17,809 NZD
$10,020 USD
View
B
Retailer 11
-
$17,809 NZD
$10,020 USD
View
Retailer 12
-
$18,262 NZD
$10,275 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
$18,395 NZD
$10,350 USD
View
B
Retailer 14
-
$18,703 NZD
€10,022 EUR
View
Most Expensive
B
MOH London
E5DF95E55 · Nov 2
$23,283 NZD
£10,315 GBP
View
14 more retailers have this diamond
Prices start from $13,401 NZDSave up to $9,882 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
$13,401 NZD