Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555718804

Certificate GIA 6555718804

Diamond specifications and retailer prices

From $13,019 AUD

$9,145 USD

As of November 1, 2026

Save $11,945 AUD (48%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: $24,964 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555718804. Listed at 31 retailers as of October 30, 2026, with prices from $13,019 to $24,964, a $11,945 spread on the same certified stone. NZ Jewellers lists it at $24,964. 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

1.50

Carat

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceFaint

OriginNatural

Grading LabGIA

CertificateGIA 6555718804

Dimensions10.91 × 5.92 × 3.77 mm

L/W Ratio1.84

Girdle conditionFaceted

Culet sizeNone

Key to symbols

Crystal, Feather, Cavity, Needle, Indented Natural, Natural

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceFaint

CertificateGIA 6555718804

Side View

Caratlytics Score

How it works →

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: $24,964 AUD|Low: $11,935 AUD|High: $25,579 AUD|Avg: $16,756 AUD

NZ Jewellers

Retailer 2

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Retailer 29

November 2, 2026

Retailer 27$13,019 AUD

Retailer 15$13,382 AUD

Retailer 11$13,880 AUD

Retailer 3$13,899 AUD

Retailer 16$14,286 AUD

Retailer 26$14,323 AUD

Retailer 9$14,729 AUD

Retailer 14$14,798 AUD

Retailer 10$14,979 AUD

Retailer 28$14,979 AUD

Retailer 17$15,961 AUD

Retailer 18$15,979 AUD

Retailer 13$16,052 AUD

Retailer 29$16,228 AUD

Retailer 25$16,272 AUD

Retailer 12$16,477 AUD

Retailer 8$16,567 AUD

Retailer 4$16,709 AUD

Retailer 19$16,838 AUD

Retailer 21$16,962 AUD

Retailer 20$17,804 AUD

Retailer 6$17,845 AUD

Retailer 22$18,242 AUD

Retailer 7$18,248 AUD

Retailer 5$18,723 AUD

Retailer 2$18,867 AUD

Retailer 24$22,006 AUD

Retailer 23$23,393 AUD

NZ Jewellers$24,964 AUD

36 data points across 29 retailers

31 retailers$13,019 AUD to $24,964 AUD

Retailer 1

$10,769 AUD

HK$59,100 HKD

Price last confirmed 38 days ago

Retailer 2

$11,538 AUD

$8,105 USD

View

Price last confirmed 46 days ago

Retailer 3

$13,019 AUD

$9,145 USD

View

Retailer 4

$13,382 AUD

$9,400 USD

View

B+

Retailer 5

$13,880 AUD

$9,750 USD

View

B+

Retailer 6

$13,899 AUD

$9,763 USD

View

B+

Retailer 7

$14,062 AUD

View

B+

Retailer 8

$14,286 AUD

$10,035 USD

View

B+

Retailer 9

$14,323 AUD

$10,061 USD

View

B+

Retailer 10

$14,729 AUD

CA$14,370 CAD

View

B+

Retailer 11

$14,798 AUD

$10,395 USD

View

B+

Retailer 12

$14,979 AUD

$10,522 USD

View

B+

Retailer 13

$14,979 AUD

$10,522 USD

View

Final sale: no returns

B+

Retailer 14

$15,961 AUD

$11,212 USD

View

B+

Retailer 15

$15,979 AUD

$11,225 USD

View

B+

Retailer 16

$16,052 AUD

£8,878 GBP

View

B+

Retailer 17

$16,228 AUD

$11,399 USD

View

Retailer 18

$16,272 AUD

View

Price last confirmed 9 days ago

B+

Retailer 19

$16,477 AUD

$11,574 USD

View

B+

Retailer 20

$16,567 AUD

$11,637 USD

View

B+

Retailer 21

$16,709 AUD

$11,737 USD

View

Retailer 22

$16,773 AUD

$11,782 USD

View

Price last confirmed 62 days ago

Retailer 23

$16,838 AUD

$11,828 USD

View

Price last confirmed 19 days ago

Retailer 24

$17,804 AUD

$12,506 USD

View

Retailer 25

$17,845 AUD

$12,535 USD

View

Retailer 26

$18,248 AUD

$12,818 USD

View

B+

Retailer 27

$18,723 AUD

$13,152 USD

View

B+

Retailer 28

$18,867 AUD

€12,622 EUR

View

Retailer 29

$22,006 AUD

ZAR 249,721 ZAR

View

Retailer 30

$23,393 AUD

£12,939 GBP

View

Most Expensive

NZ Jewellers

9010dca9-b235-4b2b-8fda-183916b6f45c · Oct 30

$24,964 AUD

$17,536 USD

View

30 more retailers have this diamond

Prices start from $13,019 AUDSave up to $11,945 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.

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