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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 $4,224 USD
As of November 5, 2026
Save $4,176 USD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,400 USD 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 $4,224 to $8,400, a $4,176 spread on the same certified stone. Wholesale Diamonds Direct lists it at $8,400. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,950 USD|Low: $4,201 USD|High: $9,081 USD|Avg: $5,843 USD|-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$4,224 USD
Retailer 6$4,840 USD
Retailer 1$4,950 USD
Retailer 9$5,100 USD
Retailer 3$5,229 USD
Retailer 4$5,374 USD
Retailer 8$5,843 USD
Retailer 7$5,849 USD
Retailer 2$6,008 USD
Wholesale Diamonds Direct$8,400 USD

43 data points across 10 retailers

11 retailers$4,224 USD to $8,400 USD

A
Cheapest Retailer
-
$4,224 USD
A
Retailer 2
-
$4,840 USD
View
A
Retailer 3
-
$4,950 USD
View
A
Retailer 4
-
$5,100 USD
View
A
Retailer 5
-
$5,229 USD
View
A
Retailer 6
-
$5,374 USD
View
A
Retailer 7
-
$5,843 USD
View
A
Retailer 8
-
$5,849 USD
View
B+
Retailer 9
-
$6,008 USD
View
B+
Retailer 10
-
$6,470 USD
View
Most Expensive
B
Wholesale Diamonds Direct
262936816 · Nov 6
$8,400 USD
View
10 more retailers have this diamond
Prices start from $4,224 USDSave up to $4,176 USD

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
$4,224 USD