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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

ID • I/SI2 • GIA 1555664423

Certificate GIA 1555664423

Diamond specifications and retailer prices

From €5,546 EUR
$6,220 USD
As of November 1, 2026
Save €4,784 EUR (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €10,330 EUR 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 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 1555664423. Listed at 14 retailers as of November 1, 2026, with prices from €5,546 to €10,330, a €4,784 spread on the same certified stone. MOH London lists it at €10,330. 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
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555664423
Dimensions11.46 × 5.97 × 3.63 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Natural
Top View
11.46 mm5.97 mm1.50 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555664423
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 60.8%

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: €10,330 EUR|Low: €6,083 EUR|High: €10,455 EUR|Avg: €7,321 EUR|-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
November 2, 2026
Retailer 7€6,083 EUR
Retailer 12€6,179 EUR
Retailer 10€6,426 EUR
Retailer 6€6,920 EUR
Retailer 8€7,006 EUR
Retailer 5€7,007 EUR
Retailer 11€7,167 EUR
Retailer 4€7,480 EUR
Retailer 9€7,558 EUR
Retailer 3€7,730 EUR
Retailer 2€7,740 EUR
MOH London€10,330 EUR

41 data points across 12 retailers

14 retailers€5,546 EUR to €10,330 EUR

A
Cheapest Retailer
-
€5,546 EUR
$6,220 USD
B+
Retailer 2
-
€6,083 EUR
$6,823 USD
View
B+
Retailer 3
-
€6,179 EUR
CA$9,625 CAD
View
B+
Retailer 4
-
€6,426 EUR
$7,207 USD
View
B+
Retailer 5
-
€6,920 EUR
$7,762 USD
View
B+
Retailer 6
-
€7,006 EUR
$7,858 USD
View
B+
Retailer 7
-
€7,007 EUR
£6,188 GBP
View
B+
Retailer 8
-
€7,167 EUR
$8,039 USD
View
B
Retailer 9
-
€7,480 EUR
$8,390 USD
View
B
Retailer 10
-
€7,480 EUR
$8,390 USD
View
B
Retailer 11
-
€7,558 EUR
$8,477 USD
View
B
Retailer 12
-
€7,730 EUR
$8,670 USD
View
B
Retailer 13
-
€7,740 EUR
View
Most Expensive
B
MOH London
D2AC85338 · Nov 1
€10,330 EUR
£9,123 GBP
View
13 more retailers have this diamond
Prices start from €5,546 EURSave up to €4,784 EUR

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
€5,546 EUR