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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6541380059

Certificate GIA 6541380059

Diamond specifications and retailer prices

From $13,393 AUD
HK$73,500 HKD
As of November 1, 2026
Save $12,042 AUD (47%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $25,435 AUD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541380059. Listed at 21 retailers as of October 30, 2026, with prices from $13,393 to $25,435, a $12,042 spread on the same certified stone. NZ Jewellers lists it at $25,435. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6541380059
Dimensions11.44 × 5.89 × 3.76 mm
L/W Ratio1.94
Top View
11.44 mm5.89 mm1.50 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6541380059
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.8%

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 1
Current: $23,834 AUD|Low: $13,988 AUD|High: $24,122 AUD|Avg: $17,536 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 11$14,159 AUD
Retailer 12$15,069 AUD
Retailer 4$15,261 AUD
Retailer 10$15,261 AUD
Retailer 2$15,388 AUD
Retailer 6$16,358 AUD
Retailer 9$16,583 AUD
Retailer 3$16,787 AUD
Retailer 5$17,075 AUD
Retailer 8$19,229 AUD
Retailer 7$22,420 AUD
Retailer 1$23,834 AUD

37 data points across 12 retailers

21 retailers$13,393 AUD to $25,435 AUD

A
Cheapest Retailer
-
$13,393 AUD
HK$73,500 HKD
B+
Retailer 2
-
$13,951 AUD
View
B+
Retailer 3
-
$14,159 AUD
$9,946 USD
View
B+
Retailer 4
-
$15,069 AUD
$10,585 USD
View
B+
Retailer 5
-
$15,261 AUD
$10,720 USD
View
B+
Retailer 6
-
$15,261 AUD
$10,720 USD
View
Final sale: no returns
B+
Retailer 7
-
$15,388 AUD
$10,809 USD
View
B+
Retailer 8
-
$16,358 AUD
£9,048 GBP
View
B+
Retailer 9
-
$16,532 AUD
$11,613 USD
View
Retailer 10
-
$16,583 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$16,787 AUD
$11,792 USD
View
B+
Retailer 12
-
$17,075 AUD
£9,444 GBP
View
B
Retailer 13
-
$17,823 AUD
$12,520 USD
View
B
Retailer 14
-
$17,823 AUD
$12,520 USD
View
B
Retailer 15
-
$18,407 AUD
$12,930 USD
View
B
Retailer 16
-
$19,076 AUD
$13,400 USD
View
B
Retailer 17
-
$19,229 AUD
€12,864 EUR
View
Retailer 18
-
$20,078 AUD
$14,104 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$22,420 AUD
ZAR 254,427 ZAR
View
B
Retailer 20
-
$23,834 AUD
£13,183 GBP
View
Most Expensive
B
NZ Jewellers
74024a5a-7069-4a13-aac5-ddf093fabc4a · Oct 30
$25,435 AUD
$17,867 USD
View
20 more retailers have this diamond
Prices start from $13,393 AUDSave up to $12,042 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
1.50ct Marquise
$13,393 AUD