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Marquise|Natural|GIA

1.51ct J SI2 Marquise Natural Diamond

VG • J/SI2 • GIA 6551273823

Certificate GIA 6551273823

Diamond specifications and retailer prices

From $9,084 AUD
$6,366 USD
As of November 1, 2026
Save $10,145 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $19,229 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551273823. Listed at 17 retailers as of October 30, 2026, with prices from $9,084 to $19,229, a $10,145 spread on the same certified stone. NZ Jewellers lists it at $19,229. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.93°
Pavilion angle38.64°
OriginNatural
Grading LabGIA
CertificateGIA 6551273823
Dimensions11.17 × 5.90 × 3.71 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.17 mm5.90 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551273823
Side View
Table 56.0%Crown 43.93°Girdle: THK-VTKPavilion 38.64°Culet: NoneDepth 62.9%

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: $19,229 AUD|Low: $5,812 AUD|High: $19,229 AUD|Avg: $10,521 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
Retailer 18
Retailer 19
November 2, 2026
Retailer 11$5,812 AUD
Retailer 8$9,021 AUD
Retailer 5$9,084 AUD
Retailer 19$9,154 AUD
Retailer 3$9,694 AUD
Retailer 16$10,415 AUD
Retailer 2$10,576 AUD
Retailer 14$10,754 AUD
Retailer 17$10,770 AUD
Retailer 12$11,366 AUD
Retailer 4$11,515 AUD
Retailer 6$11,515 AUD
Retailer 13$11,877 AUD
Retailer 9$11,886 AUD
Retailer 7$11,900 AUD
Retailer 18$12,017 AUD
Retailer 10$12,958 AUD
Retailer 15$16,023 AUD
NZ Jewellers$19,229 AUD

32 data points across 19 retailers

17 retailers$9,084 AUD to $19,229 AUD

Retailer 1
-
$9,021 AUD
$6,322 USD
Price last confirmed 17 days ago
B+
Retailer 2
-
$9,084 AUD
$6,366 USD
View
B+
Retailer 3
-
$9,154 AUD
$6,415 USD
View
B
Retailer 4
-
$9,694 AUD
$6,794 USD
View
B
Retailer 5
-
$10,415 AUD
$7,299 USD
View
B
Retailer 6
-
$10,576 AUD
$7,412 USD
View
B
Retailer 7
-
$10,754 AUD
£5,934 GBP
View
B
Retailer 8
-
$10,770 AUD
$7,548 USD
View
B
Retailer 9
-
$11,366 AUD
£6,272 GBP
View
B
Retailer 10
-
$11,515 AUD
$8,070 USD
View
B
Retailer 11
-
$11,515 AUD
$8,070 USD
View
B
Retailer 12
-
$11,877 AUD
€7,927 EUR
View
Retailer 13
-
$11,886 AUD
$8,330 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
$11,900 AUD
$8,340 USD
View
B
Retailer 15
-
$12,017 AUD
$8,422 USD
View
C
Retailer 16
-
$16,023 AUD
£8,842 GBP
View
Most Expensive
C
NZ Jewellers
ce38172b-199e-4ed4-8056-76e04dfe03f4 · Oct 30
$19,229 AUD
$13,476 USD
View
16 more retailers have this diamond
Prices start from $9,084 AUDSave up to $10,145 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
$9,084 AUD