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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1558626518

Certificate GIA 1558626518

Diamond specifications and retailer prices

From $10,074 AUD
$7,060 USD
As of November 1, 2026
Save $12,705 AUD (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $22,779 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558626518. Listed at 13 retailers as of October 30, 2026, with prices from $10,074 to $22,779, a $12,705 spread on the same certified stone. NZ Jewellers lists it at $22,779. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.21°
Pavilion angle42.73°
OriginNatural
Grading LabGIA
CertificateGIA 1558626518
Dimensions10.66 × 6.03 × 3.95 mm
L/W Ratio1.77
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Feather, Cavity, Cloud, Needle, Indented Natural
Top View
10.66 mm6.03 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558626518
Side View
Table 67.0%Crown 38.21°Girdle: SLI-VTKPavilion 42.73°Culet: NDepth 65.5%

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: $22,779 AUD|Low: $10,074 AUD|High: $22,779 AUD|Avg: $14,063 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
November 2, 2026
Retailer 8$10,074 AUD
Retailer 12$10,665 AUD
Retailer 11$11,344 AUD
Retailer 10$11,388 AUD
Retailer 3$11,390 AUD
Retailer 7$11,840 AUD
Retailer 4$12,338 AUD
Retailer 13$12,528 AUD
Retailer 9$13,621 AUD
Retailer 5$14,236 AUD
Retailer 2$14,876 AUD
Retailer 6$18,981 AUD
NZ Jewellers$22,779 AUD

33 data points across 13 retailers

13 retailers$10,074 AUD to $22,779 AUD

B+
Cheapest Retailer
-
$10,074 AUD
$7,060 USD
Retailer 2
-
$10,665 AUD
$7,474 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$11,344 AUD
$7,950 USD
View
B+
Retailer 4
-
$11,388 AUD
$7,981 USD
View
Final sale: no returns
B+
Retailer 5
-
$11,390 AUD
$7,982 USD
View
B+
Retailer 6
-
$11,840 AUD
$8,298 USD
View
B
Retailer 7
-
$12,338 AUD
$8,647 USD
View
B
Retailer 8
-
$12,528 AUD
$8,780 USD
View
B
Retailer 9
-
$13,621 AUD
$9,546 USD
View
B
Retailer 10
-
$14,236 AUD
$9,977 USD
View
B
Retailer 11
-
$14,876 AUD
€9,929 EUR
View
B
Retailer 12
-
$18,981 AUD
£10,474 GBP
View
Most Expensive
C
NZ Jewellers
420b6be4-ce89-46d9-b133-d4011d17c83a · Oct 30
$22,779 AUD
$15,964 USD
View
12 more retailers have this diamond
Prices start from $10,074 AUDSave up to $12,705 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
$10,074 AUD