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Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1557914895

Certificate GIA 1557914895

Diamond specifications and retailer prices

From $12,238 AUD
As of November 5, 2026
Save $9,919 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $22,157 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 1557914895. Listed at 14 retailers as of November 5, 2026, with prices from $12,238 to $22,157, a $9,919 spread on the same certified stone. NZ Jewellers lists it at $22,157. 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
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 1557914895
Dimensions11.38 × 5.99 × 3.79 mm
L/W Ratio1.90
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
11.38 mm5.99 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1557914895
Side View
Table 56.0%CrownGirdle: THK-VTKPavilion 40.11°Culet: NoneDepth 63.3%

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 5
Current: $22,157 AUD|Low: $11,364 AUD|High: $22,431 AUD|Avg: $15,309 AUD|-1.2%
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
November 6, 2026
Retailer 4$11,364 AUD
Retailer 9$12,238 AUD
Retailer 5$12,570 AUD
Retailer 14$13,132 AUD
Retailer 10$13,184 AUD
Retailer 12$14,403 AUD
Retailer 6$14,576 AUD
Retailer 8$14,624 AUD
Retailer 3$16,053 AUD
Retailer 13$16,053 AUD
Retailer 2$16,311 AUD
Retailer 11$16,592 AUD
Retailer 7$20,706 AUD
NZ Jewellers$22,157 AUD

31 data points across 14 retailers

14 retailers$12,238 AUD to $22,157 AUD

Retailer 1
-
$11,364 AUD
Price last confirmed 51 days ago
A
Retailer 2
-
$12,238 AUD
View
B+
Retailer 3
-
$12,787 AUD
View
B+
Retailer 4
-
$13,132 AUD
View
Final sale: no returns
B+
Retailer 5
-
$13,184 AUD
View
B+
Retailer 6
-
$14,403 AUD
View
B+
Retailer 7
-
$14,576 AUD
View
B+
Retailer 8
-
$14,624 AUD
View
B
Retailer 9
-
$16,053 AUD
View
B
Retailer 10
-
$16,053 AUD
View
B
Retailer 11
-
$16,311 AUD
View
B+
Retailer 12
-
$16,592 AUD
View
B
Retailer 13
-
$20,706 AUD
View
Most Expensive
B
NZ Jewellers
6332d3ed-82a0-4266-a848-855a4ef875d4 · Nov 5
$22,157 AUD
$15,224 USD
View
13 more retailers have this diamond
Prices start from $12,238 AUDSave up to $9,919 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
$12,238 AUD