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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6545340711

Certificate GIA 6545340711

Diamond specifications and retailer prices

From $12,017 AUD
$8,441 USD
As of October 30, 2026
Save $10,686 AUD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $22,702 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545340711. Listed at 18 retailers as of October 30, 2026, with prices from $12,017 to $22,702, a $10,686 spread on the same certified stone. NZ Jewellers lists it at $22,702. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545340711
Dimensions11.06 × 5.88 × 3.92 mm
L/W Ratio1.88
Top View
11.06 mm5.88 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545340711
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

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: Oct 30
Current: $22,702 AUD|Low: $11,869 AUD|High: $22,702 AUD|Avg: $15,559 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
October 31, 2026
Retailer 3$12,017 AUD
Retailer 4$12,968 AUD
Retailer 11$13,621 AUD
Retailer 15$13,621 AUD
Retailer 5$13,737 AUD
Retailer 12$13,860 AUD
Retailer 7$14,527 AUD
Retailer 10$14,757 AUD
Retailer 2$14,912 AUD
Retailer 14$14,983 AUD
Retailer 13$17,026 AUD
Retailer 8$17,163 AUD
Retailer 6$17,926 AUD
Retailer 9$21,388 AUD
NZ Jewellers$22,702 AUD

40 data points across 15 retailers

18 retailers$12,017 AUD to $22,702 AUD

A
Cheapest Retailer
-
$12,017 AUD
$8,441 USD
A
Retailer 2
-
$12,603 AUD
$8,853 USD
View
A
Retailer 3
-
$12,639 AUD
$8,878 USD
View
A
Retailer 4
-
$12,767 AUD
View
A
Retailer 5
-
$12,968 AUD
$9,110 USD
View
B+
Retailer 6
-
$13,621 AUD
$9,568 USD
View
Final sale: no returns
A
Retailer 7
-
$13,621 AUD
$9,568 USD
View
B+
Retailer 8
-
$13,860 AUD
$9,736 USD
View
B+
Retailer 9
-
$14,527 AUD
$10,204 USD
View
B+
Retailer 10
-
$14,757 AUD
$10,366 USD
View
B+
Retailer 11
-
$14,912 AUD
£8,248 GBP
View
B+
Retailer 12
-
$14,983 AUD
$10,525 USD
View
B+
Retailer 13
-
$17,026 AUD
$11,960 USD
View
Retailer 14
-
$17,026 AUD
$11,960 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$17,163 AUD
€11,482 EUR
View
Retailer 16
-
$17,926 AUD
$12,592 USD
View
Price last confirmed 16 days ago
B
Retailer 17
-
$21,388 AUD
£11,830 GBP
View
Most Expensive
B
NZ Jewellers
b2489fcf-b846-4fc4-a115-469532cfdb69 · Oct 30
$22,702 AUD
$15,947 USD
View
17 more retailers have this diamond
Prices start from $12,017 AUDSave up to $10,686 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
$12,017 AUD