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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 2556989894

Certificate GIA 2556989894

Diamond specifications and retailer prices

From $12,491 NZD
£5,543 GBP
As of November 1, 2026
Save $11,545 NZD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $24,036 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 2556989894. Listed at 9 retailers as of October 30, 2026, with prices from $12,491 to $24,036, a $11,545 spread on the same certified stone. NZ Jewellers lists it at $24,036. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle41.77°
Pavilion angle40.99°
OriginNatural
Grading LabGIA
CertificateGIA 2556989894
Dimensions10.49 × 5.87 × 4.02 mm
L/W Ratio1.79
Girdle conditionExtremely Thick
Key to symbols
Crystal, Needle, Indented Natural, Natural
Top View
10.49 mm5.87 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2556989894
Side View
Table 56.0%Crown 41.77°Girdle: MED-ETKPavilion 40.99°Culet: NoneDepth 68.5%

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 1
Current: $24,036 NZD|Low: $12,416 NZD|High: $25,408 NZD|Avg: $16,503 NZD|-5.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$12,491 NZD
Retailer 5$12,864 NZD
Retailer 8$12,864 NZD
Retailer 3$13,446 NZD
Retailer 9$14,164 NZD
Retailer 7$14,370 NZD
Retailer 6$14,592 NZD
Retailer 2$20,028 NZD
NZ Jewellers$24,036 NZD

40 data points across 9 retailers

9 retailers$12,491 NZD to $24,036 NZD

A
Cheapest Retailer
-
$12,491 NZD
£5,543 GBP
A
Retailer 2
-
$12,864 NZD
$7,250 USD
View
A
Retailer 3
-
$12,864 NZD
$7,250 USD
View
A
Retailer 4
-
$13,446 NZD
£5,967 GBP
View
Retailer 5
-
$14,164 NZD
A$12,281 AUD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$14,370 NZD
$8,099 USD
View
A
Retailer 7
-
$14,592 NZD
$8,224 USD
View
B+
Retailer 8
-
$20,028 NZD
£8,888 GBP
View
Most Expensive
B
NZ Jewellers
29e4c08f-86f9-410e-ae17-cd1c8a797e97 · Oct 30
$24,036 NZD
$13,547 USD
View
8 more retailers have this diamond
Prices start from $12,491 NZDSave up to $11,545 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
$12,491 NZD