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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2556380273

Certificate GIA 2556380273

Diamond specifications and retailer prices

From $11,640 NZD
$6,549 USD
As of October 30, 2026
Save $9,000 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,640 NZD at MOH London · As of October 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556380273. Listed at 14 retailers as of October 29, 2026, with prices from $11,640 to $20,640, a $9,000 spread on the same certified stone. MOH London lists it at $20,640. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556380273
Dimensions11.18 × 5.86 × 3.78 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Top View
11.18 mm5.86 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556380273
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: Oct 30
Current: $20,640 NZD|Low: $11,291 NZD|High: $20,777 NZD|Avg: $14,180 NZD|-0.7%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 18$11,640 NZD
Retailer 8$11,723 NZD
Retailer 10$11,979 NZD
Retailer 9$12,127 NZD
Retailer 4$12,318 NZD
Retailer 17$12,318 NZD
Retailer 3$12,422 NZD
Retailer 5$13,550 NZD
Retailer 11$13,902 NZD
Retailer 2$14,413 NZD
Retailer 13$14,734 NZD
Retailer 15$14,734 NZD
Retailer 14$15,214 NZD
Retailer 6$15,261 NZD
Retailer 16$15,399 NZD
Retailer 12$16,071 NZD
Retailer 7$16,225 NZD
MOH London$20,640 NZD

23 data points across 18 retailers

14 retailers$11,640 NZD to $20,640 NZD

B+
Cheapest Retailer
-
$11,640 NZD
$6,549 USD
B+
Retailer 2
-
$12,318 NZD
$6,931 USD
View
Final sale: no returns
Retailer 3
-
$12,318 NZD
$6,931 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$12,422 NZD
$6,989 USD
View
B+
Retailer 5
-
$13,550 NZD
$7,624 USD
View
B+
Retailer 6
-
$13,902 NZD
£6,159 GBP
View
B+
Retailer 7
-
$14,413 NZD
£6,385 GBP
View
B
Retailer 8
-
$14,734 NZD
$8,290 USD
View
B
Retailer 9
-
$14,734 NZD
$8,290 USD
View
B
Retailer 10
-
$15,214 NZD
$8,560 USD
View
B
Retailer 11
-
$15,399 NZD
$8,664 USD
View
B
Retailer 12
-
$16,071 NZD
€8,612 EUR
View
Retailer 13
-
$16,225 NZD
$9,129 USD
View
Price last confirmed 19 days ago
Most Expensive
B
MOH London
1FA2D8523 · Oct 29
$20,640 NZD
£9,144 GBP
View
13 more retailers have this diamond
Prices start from $11,640 NZDSave up to $9,000 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
$11,640 NZD