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Marquise|Natural|GIA

1.51ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6552470809

Certificate GIA 6552470809

Diamond specifications and retailer prices

From $8,687 AUD
$6,088 USD
As of November 1, 2026
Save $10,072 AUD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $18,759 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552470809. Listed at 17 retailers as of October 30, 2026, with prices from $8,687 to $18,759, a $10,072 spread on the same certified stone. NZ Jewellers lists it at $18,759. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.95°
Pavilion angle42.18°
OriginNatural
Grading LabGIA
CertificateGIA 6552470809
Dimensions11.17 × 6.10 × 3.80 mm
L/W Ratio1.83
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Indented Natural
Top View
11.17 mm6.10 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552470809
Side View
Table 65.0%Crown 34.95°Girdle: STK-VTKPavilion 42.18°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $18,759 AUD|Low: $8,861 AUD|High: $18,759 AUD|Avg: $11,720 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
Retailer 16
Retailer 17
November 2, 2026
Retailer 12$8,861 AUD
Retailer 3$9,317 AUD
Retailer 5$9,379 AUD
Retailer 13$9,457 AUD
Retailer 6$10,161 AUD
Retailer 16$10,318 AUD
Retailer 10$10,487 AUD
Retailer 4$10,722 AUD
Retailer 15$11,244 AUD
Retailer 17$11,244 AUD
Retailer 14$11,615 AUD
Retailer 7$11,725 AUD
Retailer 2$12,253 AUD
Retailer 8$12,357 AUD
Retailer 9$13,372 AUD
Retailer 11$15,632 AUD
NZ Jewellers$18,759 AUD

40 data points across 17 retailers

17 retailers$8,687 AUD to $18,759 AUD

B+
Cheapest Retailer
-
$8,687 AUD
$6,088 USD
B+
Retailer 2
-
$8,861 AUD
$6,210 USD
View
B+
Retailer 3
-
$9,317 AUD
CA$9,069 CAD
View
B+
Retailer 4
-
$9,379 AUD
$6,573 USD
View
B
Retailer 5
-
$9,457 AUD
$6,628 USD
View
B
Retailer 6
-
$10,161 AUD
$7,121 USD
View
B
Retailer 7
-
$10,318 AUD
$7,231 USD
View
B+
Retailer 8
-
$10,487 AUD
£5,787 GBP
View
B
Retailer 9
-
$10,722 AUD
$7,514 USD
View
B
Retailer 10
-
$11,244 AUD
$7,880 USD
View
B
Retailer 11
-
$11,244 AUD
$7,880 USD
View
B
Retailer 12
-
$11,615 AUD
$8,140 USD
View
B
Retailer 13
-
$11,725 AUD
$8,217 USD
View
B
Retailer 14
-
$12,253 AUD
€8,178 EUR
View
Retailer 15
-
$12,357 AUD
$8,660 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$15,632 AUD
£8,626 GBP
View
Most Expensive
C
NZ Jewellers
59f719e2-1b58-4986-80a0-1449147ab945 · Oct 30
$18,759 AUD
$13,147 USD
View
16 more retailers have this diamond
Prices start from $8,687 AUDSave up to $10,072 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.

B+
1.51ct Marquise
$8,687 AUD