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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551670301

Certificate GIA 6551670301

Diamond specifications and retailer prices

From $14,581 SGD
CA$15,835 CAD
As of October 30, 2026
Save $8,024 SGD (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $22,606 SGD 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551670301. Listed at 9 retailers as of October 30, 2026, with prices from $14,581 to $22,606, a $8,024 spread on the same certified stone. MOH London lists it at $22,606. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551670301
Dimensions11.43 × 5.89 × 3.77 mm
L/W Ratio1.94
Top View
11.43 mm5.89 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551670301
Side View
Table 60.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 64.0%

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: $22,606 SGD|Low: $12,259 SGD|High: $22,606 SGD|Avg: $15,807 SGD|+12.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$12,332 SGD
Retailer 10$14,252 SGD
Retailer 4$14,581 SGD
Retailer 3$15,654 SGD
Retailer 6$16,072 SGD
Retailer 5$17,188 SGD
Retailer 8$17,926 SGD
Retailer 2$18,232 SGD
Retailer 7$19,040 SGD
MOH London$22,606 SGD

24 data points across 10 retailers

9 retailers$14,581 SGD to $22,606 SGD

Retailer 1
-
$14,252 SGD
A$17,144 AUD
Price last confirmed 29 days ago
B+
Retailer 2
-
$14,581 SGD
CA$15,835 CAD
View
B+
Retailer 3
-
$15,654 SGD
£9,638 GBP
View
B+
Retailer 4
-
$16,072 SGD
$12,567 USD
View
B+
Retailer 5
-
$17,136 SGD
$13,399 USD
View
B+
Retailer 6
-
$17,188 SGD
$13,440 USD
View
B
Retailer 7
-
$17,926 SGD
$14,017 USD
View
B
Retailer 8
-
$18,232 SGD
€13,577 EUR
View
Most Expensive
B
MOH London
0F8B4BE1C · Nov 1
$22,606 SGD
£13,918 GBP
View
8 more retailers have this diamond
Prices start from $14,581 SGDSave up to $8,024 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
$14,581 SGD