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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 6233636953

Certificate GIA 6233636953

Diamond specifications and retailer prices

From $16,063 AUD
$11,257 USD
As of November 1, 2026
Save $12,510 AUD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $28,572 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6233636953. Listed at 11 retailers as of October 30, 2026, with prices from $16,063 to $28,572, a $12,510 spread on the same certified stone. NZ Jewellers lists it at $28,572. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.18°
Pavilion angle37.94°
OriginNatural
Grading LabGIA
CertificateGIA 6233636953
Dimensions12.27 × 5.54 × 3.49 mm
L/W Ratio2.21
Top View
12.27 mm5.54 mm1.50 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6233636953
Side View
Table 56.0%Crown 41.18°Girdle: MED-VTKPavilion 37.94°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $19,180 AUD|Low: $16,429 AUD|High: $27,097 AUD|Avg: $20,515 AUD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$16,429 AUD
Retailer 6$18,287 AUD
Retailer 3$18,469 AUD
Retailer 1$19,180 AUD
Retailer 2$21,594 AUD
Retailer 4$26,775 AUD

41 data points across 6 retailers

11 retailers$16,063 AUD to $28,572 AUD

B+
Cheapest Retailer
-
$16,063 AUD
$11,257 USD
B+
Retailer 2
-
$16,306 AUD
CA$15,872 CAD
View
B+
Retailer 3
-
$16,429 AUD
$11,514 USD
View
Final sale: no returns
B
Retailer 4
-
$18,287 AUD
$12,816 USD
View
B
Retailer 5
-
$18,469 AUD
£10,192 GBP
View
B
Retailer 6
-
$18,573 AUD
$13,016 USD
View
B
Retailer 7
-
$19,180 AUD
£10,584 GBP
View
B
Retailer 8
-
$19,286 AUD
$13,516 USD
View
B
Retailer 9
-
$21,594 AUD
€14,413 EUR
View
B
Retailer 10
-
$26,775 AUD
£14,775 GBP
View
Most Expensive
C
NZ Jewellers
42755b33-3b48-4e28-96c0-8e6c13f96549 · Oct 30
$28,572 AUD
$20,024 USD
View
10 more retailers have this diamond
Prices start from $16,063 AUDSave up to $12,510 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.

B+
1.50ct Marquise
$16,063 AUD