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Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2544995398

Certificate GIA 2544995398

Diamond specifications and retailer prices

From $11,345 AUD
$7,951 USD
As of November 2, 2026
Save $9,089 AUD (44%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $20,435 AUD at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2544995398. Listed at 21 retailers as of October 27, 2026, with prices from $11,345 to $20,435, a $9,089 spread on the same certified stone. NZ Jewellers lists it at $20,435. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2544995398
Dimensions10.95 × 5.92 × 3.84 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.95 mm5.92 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2544995398
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.9%

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 2
Current: $20,435 AUD|Low: $11,345 AUD|High: $20,435 AUD|Avg: $14,338 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 11$11,345 AUD
Retailer 5$11,479 AUD
Retailer 21$12,179 AUD
Retailer 4$12,261 AUD
Retailer 10$12,363 AUD
Retailer 6$12,708 AUD
Retailer 12$13,070 AUD
Retailer 18$13,283 AUD
Retailer 16$13,291 AUD
Retailer 3$13,464 AUD
Retailer 2$13,487 AUD
Retailer 7$13,544 AUD
Retailer 13$13,911 AUD
Retailer 9$15,028 AUD
Retailer 8$15,107 AUD
Retailer 20$15,326 AUD
Retailer 15$15,445 AUD
Retailer 14$16,138 AUD
Retailer 19$18,012 AUD
Retailer 17$19,149 AUD
NZ Jewellers$20,435 AUD

19 data points across 21 retailers

21 retailers$11,345 AUD to $20,435 AUD

B+
Cheapest Retailer
-
$11,345 AUD
$7,951 USD
B+
Retailer 2
-
$11,479 AUD
$8,045 USD
View
B+
Retailer 3
-
$12,179 AUD
$8,535 USD
View
Retailer 4
-
$12,261 AUD
$8,593 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$12,363 AUD
$8,664 USD
View
B
Retailer 6
-
$12,708 AUD
CA$12,369 CAD
View
B
Retailer 7
-
$13,070 AUD
$9,160 USD
View
B
Retailer 8
-
$13,283 AUD
$9,309 USD
View
B
Retailer 9
-
$13,291 AUD
£7,334 GBP
View
Retailer 10
-
$13,464 AUD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$13,487 AUD
$9,452 USD
View
B
Retailer 12
-
$13,544 AUD
$9,492 USD
View
B+
Retailer 13
-
$13,911 AUD
£7,677 GBP
View
B
Retailer 14
-
$15,028 AUD
$10,532 USD
View
B
Retailer 15
-
$15,107 AUD
$10,587 USD
View
B
Retailer 16
-
$15,326 AUD
$10,741 USD
View
B
Retailer 17
-
$15,445 AUD
€10,309 EUR
View
Retailer 18
-
$16,138 AUD
$11,310 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$18,012 AUD
ZAR 203,930 ZAR
View
B
Retailer 20
-
$19,149 AUD
£10,567 GBP
View
Most Expensive
B
NZ Jewellers
b540eeae-3f64-4cdf-8e35-f742a2ceb8b4 · Oct 27
$20,435 AUD
$14,321 USD
View
20 more retailers have this diamond
Prices start from $11,345 AUDSave up to $9,089 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
$11,345 AUD