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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2564234109

Certificate GIA 2564234109

Diamond specifications and retailer prices

From $13,721 AUD
HK$75,300 HKD
As of November 1, 2026
Save $12,361 AUD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $26,082 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 2564234109. Listed at 11 retailers as of October 30, 2026, with prices from $13,721 to $26,082, a $12,361 spread on the same certified stone. NZ Jewellers lists it at $26,082. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.04°
OriginNatural
Grading LabGIA
CertificateGIA 2564234109
Dimensions12.15 × 5.72 × 3.73 mm
L/W Ratio2.12
Key to symbols
Twinning Wisp, Crystal, Feather, Natural
Top View
12.15 mm5.72 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2564234109
Side View
Table 55.0%CrownGirdle: THK-VTKPavilion 41.04°Culet: NoneDepth 65.3%

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: $26,082 AUD|Low: $13,721 AUD|High: $26,320 AUD|Avg: $19,110 AUD|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 11$13,721 AUD
Retailer 7$15,110 AUD
Retailer 8$16,287 AUD
Retailer 5$17,509 AUD
Retailer 3$18,592 AUD
Retailer 6$18,713 AUD
Retailer 9$19,258 AUD
Retailer 10$19,330 AUD
Retailer 2$23,767 AUD
Retailer 4$24,440 AUD
NZ Jewellers$26,082 AUD

12 data points across 11 retailers

11 retailers$13,721 AUD to $26,082 AUD

A
Cheapest Retailer
-
$13,721 AUD
HK$75,300 HKD
B+
Retailer 2
-
$15,110 AUD
€10,108 EUR
View
B+
Retailer 3
-
$16,287 AUD
$11,441 USD
View
B+
Retailer 4
-
$17,509 AUD
£9,684 GBP
View
B
Retailer 5
-
$18,592 AUD
$13,060 USD
View
B
Retailer 6
-
$18,713 AUD
$13,145 USD
View
B+
Retailer 7
-
$19,258 AUD
$13,528 USD
View
B+
Retailer 8
-
$19,330 AUD
€12,932 EUR
View
B
Retailer 9
-
$23,767 AUD
$16,695 USD
View
B
Retailer 10
-
$24,440 AUD
£13,518 GBP
View
Most Expensive
B
NZ Jewellers
221050fd-396e-4ec7-8e7b-c1425e163983 · Oct 30
$26,082 AUD
$18,321 USD
View
10 more retailers have this diamond
Prices start from $13,721 AUDSave up to $12,361 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
$13,721 AUD