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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6551666431

Certificate GIA 6551666431

Diamond specifications and retailer prices

From $9,550 SGD
As of November 5, 2026
Save $7,570 SGD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $17,121 SGD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551666431. Listed at 14 retailers as of November 5, 2026, with prices from $9,550 to $17,121, a $7,570 spread on the same certified stone. With Clarity lists it at $17,121. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.52°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 6551666431
Dimensions10.86 × 5.87 × 3.79 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.86 mm5.87 mm1.50 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551666431
Side View
Table 61.0%Crown 40.52°Girdle: VTN-VTKPavilion 39.55°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $12,601 SGD|Low: $9,550 SGD|High: $17,828 SGD|Avg: $12,229 SGD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 6, 2026
Retailer 9$9,550 SGD
Retailer 10$10,113 SGD
Retailer 7$10,271 SGD
Retailer 6$10,399 SGD
Retailer 8$10,512 SGD
Retailer 11$10,657 SGD
Retailer 5$10,778 SGD
Retailer 2$12,289 SGD
Retailer 12$12,403 SGD
Retailer 1$12,601 SGD
Retailer 4$12,711 SGD
Retailer 3$15,507 SGD
With Clarity$17,121 SGD

38 data points across 13 retailers

14 retailers$9,550 SGD to $17,121 SGD

A
Cheapest Retailer
-
$9,550 SGD
A
Retailer 2
-
$10,113 SGD
View
A
Retailer 3
-
$10,271 SGD
View
A
Retailer 4
-
$10,399 SGD
View
A
Retailer 5
-
$10,512 SGD
View
A
Retailer 6
-
$10,657 SGD
View
A
Retailer 7
-
$10,778 SGD
View
B+
Retailer 8
-
$12,289 SGD
View
B+
Retailer 9
-
$12,403 SGD
View
B+
Retailer 10
-
$12,601 SGD
View
B+
Retailer 11
-
$12,711 SGD
View
B+
Retailer 12
-
$13,773 SGD
View
B+
Retailer 13
-
$15,507 SGD
View
Most Expensive
B
With Clarity
6551666431 · Nov 6
$17,121 SGD
$13,359 USD
View
13 more retailers have this diamond
Prices start from $9,550 SGDSave up to $7,570 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.

A
1.50ct Marquise
$9,550 SGD