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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

GD • K/SI1 • GIA 5242078709

Certificate GIA 5242078709

Diamond specifications and retailer prices

From $7,728 AUD
As of November 5, 2026
Save $8,326 AUD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,055 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5242078709. Listed at 14 retailers as of November 5, 2026, with prices from $7,728 to $16,055, a $8,326 spread on the same certified stone. NZ Jewellers lists it at $16,055. 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
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.41°
OriginNatural
Grading LabGIA
CertificateGIA 5242078709
Dimensions11.23 × 5.92 × 3.59 mm
L/W Ratio1.90
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
11.23 mm5.92 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242078709
Side View
Table 54.0%CrownGirdle: VTK-ETKPavilion 35.41°Culet: NoneDepth 60.6%

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 5
Current: $16,055 AUD|Low: $5,606 AUD|High: $16,055 AUD|Avg: $9,120 AUD|+22.4%
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
November 6, 2026
Retailer 5$5,606 AUD
Retailer 8$6,791 AUD
Retailer 7$7,203 AUD
Retailer 4$7,618 AUD
Retailer 6$7,714 AUD
Retailer 14$7,728 AUD
Retailer 3$7,949 AUD
Retailer 15$8,302 AUD
Retailer 11$8,941 AUD
Retailer 16$9,154 AUD
Retailer 9$9,205 AUD
Retailer 13$9,259 AUD
Retailer 2$9,952 AUD
Retailer 12$14,048 AUD
Retailer 10$14,104 AUD
NZ Jewellers$16,055 AUD

28 data points across 16 retailers

14 retailers$7,728 AUD to $16,055 AUD

Retailer 1
-
$5,606 AUD
Price last confirmed 20 days ago
Retailer 2
-
$7,203 AUD
View
Price last confirmed 22 days ago
Retailer 3
-
$7,714 AUD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$7,728 AUD
View
B+
Retailer 5
-
$7,949 AUD
View
B
Retailer 6
-
$8,302 AUD
View
B
Retailer 7
-
$8,941 AUD
View
B
Retailer 8
-
$9,154 AUD
View
B
Retailer 9
-
$9,205 AUD
View
B
Retailer 10
-
$9,259 AUD
View
B
Retailer 11
-
$9,952 AUD
View
C
Retailer 12
-
$14,048 AUD
View
C
Retailer 13
-
$14,104 AUD
View
Most Expensive
C
NZ Jewellers
37025887-5a4a-48e0-b13f-12c39a9fc033 · Nov 5
$16,055 AUD
$11,031 USD
View
13 more retailers have this diamond
Prices start from $7,728 AUDSave up to $8,326 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
$7,728 AUD