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Marquise|Natural|GIA

1.50ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 6421787418

Certificate GIA 6421787418

Diamond specifications and retailer prices

From $9,470 SGD
As of November 6, 2026
Save $8,623 SGD (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,092 SGD at NZ Jewellers · As of November 5, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6421787418. Listed at 14 retailers as of November 5, 2026, with prices from $9,470 to $18,092, a $8,623 spread on the same certified stone. NZ Jewellers lists it at $18,092. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421787418
Dimensions10.83 × 6.18 × 3.79 mm
L/W Ratio1.75
Top View
10.83 mm6.18 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6421787418
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: Very SmallDepth 61.2%

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 6
Current: $18,092 SGD|Low: $9,470 SGD|High: $18,092 SGD|Avg: $13,266 SGD
NZ Jewellers
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 7, 2026
Retailer 4$9,470 SGD
Retailer 14$10,164 SGD
Retailer 3$10,855 SGD
Retailer 13$10,855 SGD
Retailer 9$10,946 SGD
Retailer 6$11,570 SGD
Retailer 2$11,722 SGD
Retailer 12$11,760 SGD
Retailer 11$11,941 SGD
Retailer 15$13,570 SGD
Retailer 8$13,600 SGD
Retailer 5$14,291 SGD
Retailer 7$15,796 SGD
Retailer 10$16,907 SGD
NZ Jewellers$18,092 SGD

38 data points across 15 retailers

14 retailers$9,470 SGD to $18,092 SGD

A
Cheapest Retailer
-
$9,470 SGD
A
Retailer 2
-
$10,164 SGD
View
B+
Retailer 3
-
$10,855 SGD
View
Final sale: no returns
B+
Retailer 4
-
$10,946 SGD
View
B+
Retailer 5
-
$11,570 SGD
View
B+
Retailer 6
-
$11,722 SGD
View
B+
Retailer 7
-
$11,760 SGD
View
B+
Retailer 8
-
$11,941 SGD
View
B
Retailer 9
-
$13,570 SGD
View
Retailer 10
-
$13,570 SGD
View
Price last confirmed 46 days ago
B+
Retailer 11
-
$13,600 SGD
View
Retailer 12
-
$14,291 SGD
View
Price last confirmed 32 days ago
B
Retailer 13
-
$16,907 SGD
View
Most Expensive
B
NZ Jewellers
2c005af1-3789-47d6-b397-86e7dec1092e · Nov 5
$18,092 SGD
$14,117 USD
View
13 more retailers have this diamond
Prices start from $9,470 SGDSave up to $8,623 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
$9,470 SGD