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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565156521

Certificate GIA 6565156521

Diamond specifications and retailer prices

From $6,738 USD
As of November 6, 2026
Save $4,672 USD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,410 USD at MOH London · As of November 4, 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 J 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 6565156521. Listed at 14 retailers as of November 4, 2026, with prices from $6,738 to $11,410, a $4,672 spread on the same certified stone. MOH London lists it at $11,410. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565156521
Dimensions11.05 × 5.97 × 3.68 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Cavity, Pinpoint, Natural
Top View
11.05 mm5.97 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565156521
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.6%

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: Nov 6
Current: $11,410 USD|Low: $6,140 USD|High: $11,577 USD|Avg: $7,990 USD|-1.3%
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 6, 2026
Retailer 5$6,738 USD
Retailer 9$6,894 USD
Retailer 11$7,114 USD
Retailer 8$7,550 USD
Retailer 10$7,661 USD
Retailer 7$7,745 USD
Retailer 6$7,761 USD
Retailer 12$7,934 USD
Retailer 3$8,290 USD
Retailer 4$8,290 USD
Retailer 13$8,366 USD
Retailer 14$8,560 USD
Retailer 2$8,918 USD
MOH London$11,410 USD

36 data points across 14 retailers

14 retailers$6,738 USD to $11,410 USD

B+
Cheapest Retailer
-
$6,738 USD
B
Retailer 2
-
$6,894 USD
View
B
Retailer 3
-
$7,114 USD
View
B
Retailer 4
-
$7,550 USD
View
B
Retailer 5
-
$7,661 USD
View
B+
Retailer 6
-
$7,745 USD
View
B
Retailer 7
-
$7,761 USD
View
B
Retailer 8
-
$7,934 USD
View
B
Retailer 9
-
$8,290 USD
View
B
Retailer 10
-
$8,290 USD
View
B
Retailer 11
-
$8,366 USD
View
B
Retailer 12
-
$8,560 USD
View
B
Retailer 13
-
$8,918 USD
View
Most Expensive
B
MOH London
33DFA88A3 · Nov 4
$11,410 USD
£8,984 GBP
View
13 more retailers have this diamond
Prices start from $6,738 USDSave up to $4,672 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
$6,738 USD