Marquise|Natural|GIA

1.50ct F SI1 Marquise Natural Diamond

EX • F/SI1

Diamond specifications and retailer prices

From $11,303 SGD
$8,838 USD
As of November 2, 2026
Save $3,715 SGD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $21,115 SGD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded F 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. Listed at 9 retailers as of November 1, 2026, with a 33% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions11.63 × 5.82 × 3.88 mm
L/W Ratio2.00
Top View
11.63 mm5.82 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.7%

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 2
Current: $21,115 SGD|Low: $11,043 SGD|High: $21,115 SGD|Avg: $14,012 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$11,043 SGD
Retailer 10$11,303 SGD
Retailer 2$12,423 SGD
Retailer 5$12,669 SGD
Retailer 3$13,464 SGD
Retailer 6$13,724 SGD
Retailer 9$14,073 SGD
Retailer 4$15,018 SGD
Retailer 8$15,835 SGD
NZ Jewellers$21,115 SGD

8 data points across 10 retailers

9 retailers$11,303 SGD to $15,018 SGD

Retailer 1
-
$11,043 SGD
$8,635 USD
Price last confirmed 26 days ago
B+
Retailer 2
-
$11,303 SGD
$8,838 USD
View
B+
Retailer 3
-
$12,423 SGD
CA$13,492 CAD
View
Retailer 4
-
$12,669 SGD
$9,906 USD
View
Price last confirmed 22 days ago
B
Retailer 5
-
$13,464 SGD
$10,528 USD
View
Retailer 6
-
$13,724 SGD
$10,731 USD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$15,018 SGD
$11,743 USD
View
Retailer 8
-
$15,835 SGD
$12,382 USD
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
f931565d-b274-4fea-ad34-fbd78b04fabd · Oct 6
$21,115 SGD
$16,510 USD
View
Price last confirmed 27 days ago
8 more retailers have this diamond
Prices start from $11,303 SGDSave up to $3,715 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
$11,303 SGD