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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 5242018791

Certificate GIA 5242018791

Diamond specifications and retailer prices

From $4,937 SGD
As of November 6, 2026
Save $5,984 SGD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,121 SGD at NZ Jewellers · As of September 21, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5242018791. Listed at 16 retailers as of November 4, 2026, with a 121% 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5242018791
Dimensions10.90 × 5.88 × 3.87 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.90 mm5.88 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242018791
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $6,669 SGD|Low: $4,905 SGD|High: $11,145 SGD|Avg: $6,891 SGD|-3.7%
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
November 6, 2026
Retailer 13$4,937 SGD
Retailer 3$5,002 SGD
Retailer 11$5,230 SGD
Retailer 4$5,442 SGD
Retailer 2$5,749 SGD
Retailer 6$5,870 SGD
Retailer 14$5,904 SGD
Retailer 12$5,934 SGD
Retailer 8$6,164 SGD
Retailer 1$6,669 SGD
Retailer 7$7,353 SGD
Retailer 9$8,388 SGD
Retailer 5$10,020 SGD
Retailer 10$10,921 SGD

24 data points across 14 retailers

16 retailers$4,937 SGD to $10,921 SGD

A
Cheapest Retailer
-
$4,937 SGD
A
Retailer 2
-
$5,002 SGD
View
A
Retailer 3
-
$5,230 SGD
View
A
Retailer 4
-
$5,442 SGD
View
A
Retailer 5
-
$5,749 SGD
View
Final sale: no returns
A
Retailer 6
-
$5,870 SGD
View
A
Retailer 7
-
$5,904 SGD
View
B+
Retailer 8
-
$5,934 SGD
View
B+
Retailer 9
-
$6,164 SGD
View
B+
Retailer 10
-
$6,562 SGD
View
B+
Retailer 11
-
$6,669 SGD
View
B+
Retailer 12
-
$7,353 SGD
View
B
Retailer 13
-
$8,388 SGD
View
B
Retailer 14
-
$10,020 SGD
View
B
Retailer 15
-
$10,921 SGD
View
Most Expensive
NZ Jewellers
ef6fab67-c475-4b9d-8407-d5be0307f5ab · Sep 21
$12,121 SGD
$9,458 USD
View
Price last confirmed 46 days ago
15 more retailers have this diamond
Prices start from $4,937 SGDSave up to $5,984 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
$4,937 SGD