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Marquise|Natural|GIA

1.80ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1559722711

Certificate GIA 1559722711

Diamond specifications and retailer prices

From $5,413 SGD
As of November 5, 2026
Save $5,352 SGD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,765 SGD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.8ct natural marquise diamond

This 1.8ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559722711. Listed at 11 retailers as of November 5, 2026, with prices from $5,413 to $10,765, a $5,352 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,765. 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

1.80
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.95°
Pavilion angle37.68°
OriginNatural
Grading LabGIA
CertificateGIA 1559722711
Dimensions12.06 × 6.23 × 3.81 mm
L/W Ratio1.94
Culet sizeNone
Top View
12.06 mm6.23 mm1.80 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559722711
Side View
Table 58.0%Crown 39.95°Girdle: ThickPavilion 37.68°Culet: NoneDepth 61.1%

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 5
Current: $6,344 SGD|Low: $5,384 SGD|High: $11,639 SGD|Avg: $7,489 SGD|-7.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 5$5,413 SGD
Retailer 6$6,203 SGD
Retailer 1$6,344 SGD
Retailer 9$6,536 SGD
Retailer 3$6,701 SGD
Retailer 4$6,887 SGD
Retailer 8$7,488 SGD
Retailer 7$7,496 SGD
Retailer 2$7,700 SGD
Wholesale Diamonds Direct$10,765 SGD

43 data points across 10 retailers

11 retailers$5,413 SGD to $10,765 SGD

A
Cheapest Retailer
-
$5,413 SGD
A
Retailer 2
-
$6,203 SGD
View
A
Retailer 3
-
$6,344 SGD
View
A
Retailer 4
-
$6,536 SGD
View
A
Retailer 5
-
$6,701 SGD
View
A
Retailer 6
-
$6,887 SGD
View
A
Retailer 7
-
$7,488 SGD
View
A
Retailer 8
-
$7,496 SGD
View
B+
Retailer 9
-
$7,700 SGD
View
B+
Retailer 10
-
$8,292 SGD
View
Most Expensive
B
Wholesale Diamonds Direct
262936816 · Nov 6
$10,765 SGD
$8,400 USD
View
10 more retailers have this diamond
Prices start from $5,413 SGDSave up to $5,352 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
1.80ct Marquise
$5,413 SGD