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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 $6,549 USD
As of October 30, 2026
Save $5,064 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,613 USD 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 $6,549 to $11,613, a $5,064 spread on the same certified stone. MOH London lists it at $11,613. 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
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: $11,613 USD|Low: $6,353 USD|High: $11,690 USD|Avg: $7,978 USD|-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$6,549 USD
Retailer 8$6,596 USD
Retailer 10$6,740 USD
Retailer 9$6,823 USD
Retailer 4$6,931 USD
Retailer 17$6,931 USD
Retailer 3$6,989 USD
Retailer 5$7,624 USD
Retailer 11$7,822 USD
Retailer 2$8,109 USD
Retailer 13$8,290 USD
Retailer 15$8,290 USD
Retailer 14$8,560 USD
Retailer 6$8,587 USD
Retailer 16$8,664 USD
Retailer 12$9,043 USD
Retailer 7$9,129 USD
MOH London$11,613 USD

23 data points across 18 retailers

14 retailers$6,549 USD to $11,613 USD

B+
Cheapest Retailer
-
$6,549 USD
B+
Retailer 2
-
$6,931 USD
View
Final sale: no returns
Retailer 3
-
$6,931 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$6,989 USD
View
B+
Retailer 5
-
$7,624 USD
View
B+
Retailer 6
-
$7,822 USD
£6,159 GBP
View
B+
Retailer 7
-
$8,109 USD
£6,385 GBP
View
B
Retailer 8
-
$8,290 USD
View
B
Retailer 9
-
$8,290 USD
View
B
Retailer 10
-
$8,560 USD
View
B
Retailer 11
-
$8,664 USD
View
B
Retailer 12
-
$9,043 USD
€8,612 EUR
View
Retailer 13
-
$9,129 USD
View
Price last confirmed 18 days ago
Most Expensive
B
MOH London
1FA2D8523 · Oct 29
$11,613 USD
£9,144 GBP
View
13 more retailers have this diamond
Prices start from $6,549 USDSave up to $5,064 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
$6,549 USD