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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6552006150

Certificate GIA 6552006150

Diamond specifications and retailer prices

From $13,318 AUD
$9,355 USD
As of October 30, 2026
Save $8,620 AUD (39%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $21,938 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 D 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 6552006150. Listed at 14 retailers as of October 30, 2026, with prices from $13,318 to $21,938, a $8,620 spread on the same certified stone. NZ Jewellers lists it at $21,938. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552006150
Dimensions11.71 × 5.83 × 3.40 mm
L/W Ratio2.01
Top View
11.71 mm5.83 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552006150
Side View
Table 62.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 58.4%

Caratlytics Score

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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: $21,938 AUD|Low: $13,318 AUD|High: $22,201 AUD|Avg: $16,244 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 2, 2026
Retailer 6$13,318 AUD
Retailer 11$13,376 AUD
Retailer 12$13,481 AUD
Retailer 8$14,283 AUD
Retailer 14$14,528 AUD
Retailer 3$14,529 AUD
Retailer 2$14,830 AUD
Retailer 5$15,739 AUD
Retailer 4$15,981 AUD
Retailer 13$16,107 AUD
Retailer 7$16,580 AUD
Retailer 10$18,161 AUD
Retailer 9$20,557 AUD
NZ Jewellers$21,938 AUD

33 data points across 14 retailers

14 retailers$13,318 AUD to $21,938 AUD

A
Cheapest Retailer
-
$13,318 AUD
$9,355 USD
A
Retailer 2
-
$13,376 AUD
$9,396 USD
View
A
Retailer 3
-
$13,481 AUD
$9,470 USD
View
A
Retailer 4
-
$14,283 AUD
£7,900 GBP
View
B+
Retailer 5
-
$14,528 AUD
$10,205 USD
View
Final sale: no returns
A
Retailer 6
-
$14,529 AUD
$10,206 USD
View
A
Retailer 7
-
$14,830 AUD
£8,203 GBP
View
B+
Retailer 8
-
$15,739 AUD
$11,056 USD
View
B+
Retailer 9
-
$15,981 AUD
$11,226 USD
View
B+
Retailer 10
-
$16,107 AUD
$11,314 USD
View
B+
Retailer 11
-
$16,580 AUD
€11,092 EUR
View
B+
Retailer 12
-
$18,161 AUD
$12,757 USD
View
B
Retailer 13
-
$20,557 AUD
£11,370 GBP
View
Most Expensive
B
NZ Jewellers
0ae8e960-e63a-4067-bd72-18b10036012a · Oct 30
$21,938 AUD
$15,410 USD
View
13 more retailers have this diamond
Prices start from $13,318 AUDSave up to $8,620 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
$13,318 AUD