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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 6555859086

Certificate GIA 6555859086

Diamond specifications and retailer prices

From $7,529 SGD
$5,887 USD
As of November 1, 2026
Save $5,976 SGD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,121 SGD at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555859086. Listed at 19 retailers as of October 29, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.65°
Pavilion angle37.57°
OriginNatural
Grading LabGIA
CertificateGIA 6555859086
Dimensions11.28 × 6.08 × 3.56 mm
L/W Ratio1.86
Culet sizeNone
Top View
11.28 mm6.08 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555859086
Side View
Table 61.0%Crown 39.65°Girdle: MED-VTKPavilion 37.57°Culet: NoneDepth 58.6%

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 1
Current: $7,946 SGD|Low: $6,919 SGD|High: $13,791 SGD|Avg: $9,078 SGD|+2.9%
Retailer 1
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
Retailer 15
November 2, 2026
Retailer 6$6,919 SGD
Retailer 3$7,529 SGD
Retailer 1$7,946 SGD
Retailer 15$8,127 SGD
Retailer 7$8,196 SGD
Retailer 12$8,409 SGD
Retailer 5$8,481 SGD
Retailer 2$8,589 SGD
Retailer 13$9,013 SGD
Retailer 8$9,950 SGD
Retailer 10$9,950 SGD
Retailer 9$10,282 SGD
Retailer 11$10,529 SGD
Retailer 4$10,620 SGD
Retailer 14$13,505 SGD

36 data points across 15 retailers

19 retailers$7,529 SGD to $13,505 SGD

A
Cheapest Retailer
-
$7,529 SGD
$5,887 USD
B+
Retailer 2
-
$7,904 SGD
A$9,508 AUD
View
B+
Retailer 3
-
$7,946 SGD
$6,213 USD
View
Retailer 4
-
$8,061 SGD
$6,303 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$8,127 SGD
$6,355 USD
View
B+
Retailer 6
-
$8,409 SGD
$6,575 USD
View
Final sale: no returns
B+
Retailer 7
-
$8,589 SGD
$6,716 USD
View
Retailer 8
-
$8,732 SGD
$6,828 USD
View
Price last confirmed 15 days ago
Retailer 9
-
$8,867 SGD
$6,933 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
$9,013 SGD
£5,549 GBP
View
B+
Retailer 11
-
$9,213 SGD
$7,204 USD
View
B+
Retailer 12
-
$9,950 SGD
$7,780 USD
View
B+
Retailer 13
-
$9,950 SGD
$7,780 USD
View
Retailer 14
-
$10,075 SGD
$7,878 USD
View
Price last confirmed 14 days ago
B
Retailer 15
-
$10,282 SGD
$8,040 USD
View
B+
Retailer 16
-
$10,529 SGD
€7,841 EUR
View
Retailer 17
-
$10,620 SGD
$8,304 USD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$13,505 SGD
£8,315 GBP
View
Most Expensive
NZ Jewellers
5676ec57-d597-4824-a0ea-173030d83a06 · Oct 17
$16,121 SGD
$12,605 USD
View
Price last confirmed 15 days ago
18 more retailers have this diamond
Prices start from $7,529 SGDSave up to $5,976 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
$7,529 SGD