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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 2554854633

Certificate GIA 2554854633

Diamond specifications and retailer prices

From $9,674 AUD
$6,780 USD
As of November 1, 2026
Save $11,459 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $21,134 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554854633. Listed at 15 retailers as of October 30, 2026, with prices from $9,674 to $21,134, a $11,459 spread on the same certified stone. NZ Jewellers lists it at $21,134. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554854633
Dimensions13.08 × 5.79 × 3.32 mm
L/W Ratio2.26
Culet sizeNone
Top View
13.08 mm5.79 mm1.50 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554854633
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.3%

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: $21,134 AUD|Low: $9,674 AUD|High: $21,134 AUD|Avg: $12,578 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
November 3, 2026
Retailer 11$9,674 AUD
Retailer 15$9,891 AUD
Retailer 14$9,894 AUD
Retailer 13$10,566 AUD
Retailer 3$10,655 AUD
Retailer 6$11,257 AUD
Retailer 4$11,448 AUD
Retailer 12$11,624 AUD
Retailer 2$11,779 AUD
Retailer 8$12,325 AUD
Retailer 5$13,209 AUD
Retailer 9$13,803 AUD
Retailer 7$13,915 AUD
Retailer 10$17,611 AUD
NZ Jewellers$21,134 AUD

33 data points across 15 retailers

15 retailers$9,674 AUD to $21,134 AUD

B+
Cheapest Retailer
-
$9,674 AUD
$6,780 USD
B+
Retailer 2
-
$9,891 AUD
$6,932 USD
View
B+
Retailer 3
-
$9,894 AUD
$6,934 USD
View
Retailer 4
-
$10,566 AUD
$7,405 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$10,655 AUD
$7,467 USD
View
B
Retailer 6
-
$11,257 AUD
$7,889 USD
View
B
Retailer 7
-
$11,448 AUD
$8,023 USD
View
B
Retailer 8
-
$11,624 AUD
$8,146 USD
View
B
Retailer 9
-
$11,779 AUD
£6,500 GBP
View
B
Retailer 10
-
$12,325 AUD
£6,801 GBP
View
B
Retailer 11
-
$13,209 AUD
$9,257 USD
View
B
Retailer 12
-
$13,803 AUD
€9,213 EUR
View
Retailer 13
-
$13,915 AUD
$9,752 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
$17,611 AUD
£9,718 GBP
View
Most Expensive
C
NZ Jewellers
150c9ee6-7095-4d96-b34d-863aac97d91e · Oct 30
$21,134 AUD
$14,811 USD
View
14 more retailers have this diamond
Prices start from $9,674 AUDSave up to $11,459 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
$9,674 AUD