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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 $8,635 SGD
As of November 6, 2026
Save $5,987 SGD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,623 SGD 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 $8,635 to $14,623, a $5,987 spread on the same certified stone. MOH London lists it at $14,623. 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
Colour
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: $14,623 SGD|Low: $7,869 SGD|High: $14,837 SGD|Avg: $10,244 SGD|-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 7, 2026
Retailer 5$8,635 SGD
Retailer 9$8,835 SGD
Retailer 11$9,117 SGD
Retailer 8$9,676 SGD
Retailer 10$9,818 SGD
Retailer 2$9,926 SGD
Retailer 6$9,946 SGD
Retailer 12$10,168 SGD
Retailer 3$10,624 SGD
Retailer 4$10,624 SGD
Retailer 13$10,722 SGD
Retailer 14$10,970 SGD
Retailer 7$11,429 SGD
MOH London$14,623 SGD

37 data points across 14 retailers

14 retailers$8,635 SGD to $14,623 SGD

B+
Cheapest Retailer
-
$8,635 SGD
B
Retailer 2
-
$8,835 SGD
View
B
Retailer 3
-
$9,117 SGD
View
B
Retailer 4
-
$9,676 SGD
View
B
Retailer 5
-
$9,818 SGD
View
B
Retailer 6
-
$9,926 SGD
View
B
Retailer 7
-
$9,946 SGD
View
B
Retailer 8
-
$10,168 SGD
View
B
Retailer 9
-
$10,624 SGD
View
B
Retailer 10
-
$10,624 SGD
View
B
Retailer 11
-
$10,722 SGD
View
B
Retailer 12
-
$10,970 SGD
View
B
Retailer 13
-
$11,429 SGD
View
Most Expensive
B
MOH London
33DFA88A3 · Nov 4
$14,623 SGD
£8,984 GBP
View
13 more retailers have this diamond
Prices start from $8,635 SGDSave up to $5,987 SGD

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
$8,635 SGD