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Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2546552151

Certificate GIA 2546552151

Diamond specifications and retailer prices

From $11,533 AUD
As of November 6, 2026
Save $9,761 AUD (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $21,294 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546552151. Listed at 18 retailers as of November 5, 2026, with prices from $11,533 to $21,294, a $9,761 spread on the same certified stone. NZ Jewellers lists it at $21,294. 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

1.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.29°
Pavilion angle41.03°
OriginNatural
Grading LabGIA
CertificateGIA 2546552151
Dimensions11.17 × 5.94 × 3.89 mm
L/W Ratio1.88
Top View
11.17 mm5.94 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546552151
Side View
Table 60.0%Crown 38.29°Girdle: ThickPavilion 41.03°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $21,294 AUD|Low: $11,822 AUD|High: $21,294 AUD|Avg: $15,105 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
November 6, 2026
Retailer 12$12,073 AUD
Retailer 14$12,496 AUD
Retailer 13$12,776 AUD
Retailer 7$13,596 AUD
Retailer 15$13,841 AUD
Retailer 10$13,970 AUD
Retailer 8$14,187 AUD
Retailer 2$14,317 AUD
Retailer 3$14,855 AUD
Retailer 4$15,223 AUD
Retailer 16$15,223 AUD
Retailer 9$15,733 AUD
Retailer 11$15,970 AUD
Retailer 6$16,183 AUD
Retailer 5$20,087 AUD
NZ Jewellers$21,294 AUD

33 data points across 16 retailers

18 retailers$11,533 AUD to $21,294 AUD

A
Cheapest Retailer
-
$11,533 AUD
A
Retailer 2
-
$12,073 AUD
View
B+
Retailer 3
-
$12,193 AUD
View
B+
Retailer 4
-
$12,496 AUD
View
B+
Retailer 5
-
$12,776 AUD
View
Final sale: no returns
B+
Retailer 6
-
$13,596 AUD
View
B+
Retailer 7
-
$13,841 AUD
View
B+
Retailer 8
-
$13,970 AUD
View
B+
Retailer 9
-
$14,187 AUD
View
B+
Retailer 10
-
$14,317 AUD
View
B+
Retailer 11
-
$14,855 AUD
View
B+
Retailer 12
-
$15,223 AUD
View
B+
Retailer 13
-
$15,223 AUD
View
B
Retailer 14
-
$15,733 AUD
View
B
Retailer 15
-
$15,970 AUD
View
B
Retailer 16
-
$16,183 AUD
View
B
Retailer 17
-
$20,087 AUD
View
Most Expensive
B
NZ Jewellers
32220f11-e81f-449d-a18c-95ee5e69bbf1 · Nov 5
$21,294 AUD
$14,631 USD
View
17 more retailers have this diamond
Prices start from $11,533 AUDSave up to $9,761 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.

A
1.51ct Marquise
$11,533 AUD