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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 2556723774

Certificate GIA 2556723774

Diamond specifications and retailer prices

From $14,566 AUD
$10,232 USD
As of November 1, 2026
Save $10,599 AUD (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $26,855 AUD at NZ Jewellers · As of September 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 2556723774. Listed at 14 retailers as of November 1, 2026, with a 73% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceFaint
Crown angle40.84°
Pavilion angle37.92°
OriginNatural
Grading LabGIA
CertificateGIA 2556723774
Dimensions11.05 × 5.94 × 3.69 mm
L/W Ratio1.86
Culet sizeNone
Top View
11.05 mm5.94 mm1.50 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2556723774
Side View
Table 58.0%Crown 40.84°Girdle: STK-VTKPavilion 37.92°Culet: NDepth 62.1%

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: $25,165 AUD|Low: $14,566 AUD|High: $25,469 AUD|Avg: $18,381 AUD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 5$14,566 AUD
Retailer 9$15,443 AUD
Retailer 13$15,703 AUD
Retailer 10$16,878 AUD
Retailer 6$17,454 AUD
Retailer 8$17,527 AUD
Retailer 11$18,826 AUD
Retailer 3$18,920 AUD
Retailer 4$18,920 AUD
Retailer 7$19,544 AUD
Retailer 2$19,546 AUD
Retailer 12$19,851 AUD
Retailer 1$25,165 AUD

36 data points across 13 retailers

14 retailers$14,566 AUD to $25,165 AUD

B+
Cheapest Retailer
-
$14,566 AUD
$10,232 USD
B+
Retailer 2
-
$15,443 AUD
CA$15,067 CAD
View
B+
Retailer 3
-
$15,703 AUD
$11,031 USD
View
B+
Retailer 4
-
$16,878 AUD
$11,856 USD
View
B+
Retailer 5
-
$17,454 AUD
£9,654 GBP
View
B
Retailer 6
-
$17,527 AUD
$12,312 USD
View
B
Retailer 7
-
$18,826 AUD
$13,224 USD
View
B
Retailer 8
-
$18,920 AUD
$13,290 USD
View
B
Retailer 9
-
$18,920 AUD
$13,290 USD
View
B
Retailer 10
-
$19,544 AUD
€13,075 EUR
View
B
Retailer 11
-
$19,546 AUD
$13,730 USD
View
B
Retailer 12
-
$19,851 AUD
$13,944 USD
View
B
Retailer 13
-
$25,165 AUD
£13,919 GBP
View
Most Expensive
NZ Jewellers
937fa684-7c9b-4df6-878c-ff4f2ebbe656 · Sep 30
$26,855 AUD
$18,864 USD
View
Price last confirmed 32 days ago
13 more retailers have this diamond
Prices start from $14,566 AUDSave up to $10,599 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
$14,566 AUD