CaratHunter
Plans
Marquise|Natural|GIA

1.80ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1559722711

Certificate GIA 1559722711

Diamond specifications and retailer prices

From $6,148 AUD
As of November 5, 2026
Save $6,078 AUD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,225 AUD 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 $6,148 to $12,225, a $6,078 spread on the same certified stone. Wholesale Diamonds Direct lists it at $12,225. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,204 AUD|Low: $6,114 AUD|High: $13,217 AUD|Avg: $8,504 AUD|-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$6,148 AUD
Retailer 6$7,044 AUD
Retailer 1$7,204 AUD
Retailer 9$7,423 AUD
Retailer 3$7,610 AUD
Retailer 4$7,821 AUD
Retailer 8$8,504 AUD
Retailer 7$8,513 AUD
Retailer 2$8,744 AUD
Wholesale Diamonds Direct$12,225 AUD

43 data points across 10 retailers

11 retailers$6,148 AUD to $12,225 AUD

A
Cheapest Retailer
-
$6,148 AUD
A
Retailer 2
-
$7,044 AUD
View
A
Retailer 3
-
$7,204 AUD
View
A
Retailer 4
-
$7,423 AUD
View
A
Retailer 5
-
$7,610 AUD
View
A
Retailer 6
-
$7,821 AUD
View
A
Retailer 7
-
$8,504 AUD
View
A
Retailer 8
-
$8,513 AUD
View
B+
Retailer 9
-
$8,744 AUD
View
B+
Retailer 10
-
$9,416 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
262936816 · Nov 6
$12,225 AUD
$8,400 USD
View
10 more retailers have this diamond
Prices start from $6,148 AUDSave up to $6,078 AUD

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
$6,148 AUD