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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551670301

Certificate GIA 6551670301

Diamond specifications and retailer prices

From $20,230 NZD
CA$15,835 CAD
As of October 30, 2026
Save $11,133 NZD (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $31,362 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 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 6551670301. Listed at 9 retailers as of October 30, 2026, with prices from $20,230 to $31,362, a $11,133 spread on the same certified stone. MOH London lists it at $31,362. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551670301
Dimensions11.43 × 5.89 × 3.77 mm
L/W Ratio1.94
Top View
11.43 mm5.89 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551670301
Side View
Table 60.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 64.0%

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: Oct 30
Current: $31,362 NZD|Low: $17,008 NZD|High: $31,362 NZD|Avg: $21,930 NZD|+12.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$17,109 NZD
Retailer 10$19,772 NZD
Retailer 4$20,230 NZD
Retailer 3$21,717 NZD
Retailer 6$22,298 NZD
Retailer 5$23,846 NZD
Retailer 8$24,870 NZD
Retailer 2$25,294 NZD
Retailer 7$26,416 NZD
MOH London$31,362 NZD

24 data points across 10 retailers

9 retailers$20,230 NZD to $31,362 NZD

Retailer 1
-
$19,772 NZD
A$17,144 AUD
Price last confirmed 29 days ago
B+
Retailer 2
-
$20,230 NZD
CA$15,835 CAD
View
B+
Retailer 3
-
$21,717 NZD
£9,638 GBP
View
B+
Retailer 4
-
$22,298 NZD
$12,567 USD
View
B+
Retailer 5
-
$23,774 NZD
$13,399 USD
View
B+
Retailer 6
-
$23,846 NZD
$13,440 USD
View
B
Retailer 7
-
$24,870 NZD
$14,017 USD
View
B
Retailer 8
-
$25,294 NZD
€13,577 EUR
View
Most Expensive
B
MOH London
0F8B4BE1C · Nov 1
$31,362 NZD
£13,918 GBP
View
8 more retailers have this diamond
Prices start from $20,230 NZDSave up to $11,133 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
$20,230 NZD