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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1232882970

Certificate GIA 1232882970

Diamond specifications and retailer prices

From $8,280 AUD
As of November 6, 2026
Save $9,261 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,540 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232882970. Listed at 20 retailers as of November 5, 2026, with prices from $8,280 to $17,540, a $9,261 spread on the same certified stone. NZ Jewellers lists it at $17,540. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.74°
OriginNatural
Grading LabGIA
CertificateGIA 1232882970
Dimensions11.84 × 5.72 × 3.73 mm
L/W Ratio2.07
Key to symbols
Crystal, Feather, Needle, Natural
Top View
11.84 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1232882970
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 39.74°Culet: NoneDepth 65.2%

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 6
Current: $17,540 AUD|Low: $8,280 AUD|High: $17,540 AUD|Avg: $10,824 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
November 6, 2026
Retailer 8$8,280 AUD
Retailer 9$8,286 AUD
Retailer 17$8,770 AUD
Retailer 6$8,827 AUD
Retailer 7$8,843 AUD
Retailer 3$9,501 AUD
Retailer 18$9,620 AUD
Retailer 16$9,648 AUD
Retailer 11$9,869 AUD
Retailer 13$9,958 AUD
Retailer 2$10,173 AUD
Retailer 19$10,731 AUD
Retailer 4$10,962 AUD
Retailer 12$11,394 AUD
Retailer 10$11,557 AUD
Retailer 14$12,796 AUD
Retailer 15$14,576 AUD
Retailer 5$15,359 AUD
NZ Jewellers$17,540 AUD

36 data points across 19 retailers

20 retailers$8,280 AUD to $17,540 AUD

B+
Cheapest Retailer
-
$8,280 AUD
B+
Retailer 2
-
$8,286 AUD
View
Retailer 3
-
$8,770 AUD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$8,827 AUD
View
B+
Retailer 5
-
$8,843 AUD
View
B+
Retailer 6
-
$9,354 AUD
View
B
Retailer 7
-
$9,501 AUD
View
B
Retailer 8
-
$9,620 AUD
View
B
Retailer 9
-
$9,648 AUD
View
B
Retailer 10
-
$9,869 AUD
View
B
Retailer 11
-
$9,958 AUD
View
B
Retailer 12
-
$10,173 AUD
View
B
Retailer 13
-
$10,731 AUD
View
B
Retailer 14
-
$10,962 AUD
View
B
Retailer 15
-
$11,394 AUD
View
Retailer 16
-
$11,557 AUD
View
Price last confirmed 15 days ago
B
Retailer 17
-
$12,796 AUD
View
B
Retailer 18
-
$14,576 AUD
View
B
Retailer 19
-
$15,359 AUD
View
Most Expensive
B
NZ Jewellers
6bceaecc-c468-4a9f-91af-66ce2ac66a01 · Nov 5
$17,540 AUD
$12,052 USD
View
19 more retailers have this diamond
Prices start from $8,280 AUDSave up to $9,261 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
$8,280 AUD