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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 $7,540 USD
As of November 1, 2026
Save $5,560 USD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,100 USD 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 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 $7,540 to $13,100, a $5,560 spread on the same certified stone. MOH London lists it at $13,100. 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
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: $13,100 USD|Low: $7,540 USD|High: $13,259 USD|Avg: $9,679 USD|-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 2, 2026
Retailer 3$7,540 USD
Retailer 13$8,207 USD
Retailer 9$8,264 USD
Retailer 10$8,736 USD
Retailer 7$9,180 USD
Retailer 8$9,408 USD
Retailer 14$9,444 USD
Retailer 11$9,744 USD
Retailer 4$10,020 USD
Retailer 6$10,020 USD
Retailer 12$10,275 USD
Retailer 5$10,350 USD
Retailer 2$10,523 USD
MOH London$13,100 USD

31 data points across 14 retailers

15 retailers$7,540 USD to $13,100 USD

B+
Cheapest Retailer
-
$7,540 USD
B+
Retailer 2
-
$8,207 USD
View
B+
Retailer 3
-
$8,264 USD
CA$11,477 CAD
View
B
Retailer 4
-
$8,736 USD
View
B
Retailer 5
-
$9,180 USD
£7,228 GBP
View
B
Retailer 6
-
$9,331 USD
CA$12,960 CAD
View
B
Retailer 7
-
$9,408 USD
View
B
Retailer 8
-
$9,444 USD
View
B
Retailer 9
-
$9,744 USD
View
B
Retailer 10
-
$10,020 USD
View
B
Retailer 11
-
$10,020 USD
View
B
Retailer 12
-
$10,275 USD
View
B
Retailer 13
-
$10,350 USD
View
B
Retailer 14
-
$10,523 USD
€10,022 EUR
View
Most Expensive
B
MOH London
E5DF95E55 · Nov 1
$13,100 USD
£10,315 GBP
View
14 more retailers have this diamond
Prices start from $7,540 USDSave up to $5,560 USD

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
$7,540 USD