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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2564024266

Certificate GIA 2564024266

Diamond specifications and retailer prices

From $13,311 AUD
$9,350 USD
As of November 1, 2026
Save $8,950 AUD (40%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $22,261 AUD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564024266. Listed at 14 retailers as of October 30, 2026, with prices from $13,311 to $22,261, a $8,950 spread on the same certified stone. NZ Jewellers lists it at $22,261. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564024266
Dimensions11.17 × 6.01 × 3.76 mm
L/W Ratio1.86
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle
Top View
11.17 mm6.01 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564024266
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $22,261 AUD|Low: $13,311 AUD|High: $22,933 AUD|Avg: $16,338 AUD|-2.9%
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 2, 2026
Retailer 10$13,311 AUD
Retailer 7$13,473 AUD
Retailer 6$13,874 AUD
Retailer 2$14,275 AUD
Retailer 14$14,571 AUD
Retailer 8$14,719 AUD
Retailer 3$14,743 AUD
Retailer 4$14,743 AUD
Retailer 5$14,916 AUD
Retailer 9$15,731 AUD
Retailer 13$16,218 AUD
Retailer 12$18,429 AUD
Retailer 11$20,971 AUD
NZ Jewellers$22,261 AUD

33 data points across 14 retailers

14 retailers$13,311 AUD to $22,261 AUD

A
Cheapest Retailer
-
$13,311 AUD
$9,350 USD
A
Retailer 2
-
$13,473 AUD
$9,464 USD
View
Retailer 3
-
$13,874 AUD
SGD 13,170 SGD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$14,275 AUD
£7,896 GBP
View
A
Retailer 5
-
$14,571 AUD
$10,235 USD
View
A
Retailer 6
-
$14,719 AUD
£8,141 GBP
View
A
Retailer 7
-
$14,743 AUD
$10,356 USD
View
B+
Retailer 8
-
$14,743 AUD
$10,356 USD
View
Final sale: no returns
Retailer 9
-
$14,916 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$15,731 AUD
$11,050 USD
View
B+
Retailer 11
-
$16,218 AUD
$11,392 USD
View
B+
Retailer 12
-
$18,429 AUD
$12,945 USD
View
B+
Retailer 13
-
$20,971 AUD
£11,599 GBP
View
Most Expensive
B
NZ Jewellers
8216fa2d-64ce-4c00-9af0-9c4df310cdbc · Oct 30
$22,261 AUD
$15,637 USD
View
13 more retailers have this diamond
Prices start from $13,311 AUDSave up to $8,950 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
$13,311 AUD