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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 6551072778

Certificate GIA 6551072778

Diamond specifications and retailer prices

From $8,246 AUD
$5,779 USD
As of November 2, 2026
Save $7,266 AUD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $15,512 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551072778. Listed at 9 retailers as of October 30, 2026, with prices from $8,246 to $15,512, a $7,266 spread on the same certified stone. NZ Jewellers lists it at $15,512. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551072778
Dimensions10.74 × 6.04 × 3.69 mm
L/W Ratio1.78
Top View
10.74 mm6.04 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551072778
Side View
Table 66.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 61.1%

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 2
Current: $15,512 AUD|Low: $7,349 AUD|High: $15,512 AUD|Avg: $9,075 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$7,349 AUD
Retailer 3$8,149 AUD
Retailer 8$8,246 AUD
Retailer 7$8,618 AUD
Retailer 4$8,923 AUD
Retailer 11$9,172 AUD
Retailer 2$9,273 AUD
Retailer 6$9,273 AUD
Retailer 9$9,634 AUD
Retailer 5$13,664 AUD
NZ Jewellers$15,512 AUD

24 data points across 11 retailers

9 retailers$8,246 AUD to $15,512 AUD

Retailer 1
-
$7,349 AUD
$5,150 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$8,246 AUD
$5,779 USD
View
B+
Retailer 3
-
$8,618 AUD
$6,040 USD
View
B
Retailer 4
-
$8,923 AUD
£4,924 GBP
View
Retailer 5
-
$9,172 AUD
$6,428 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$9,273 AUD
$6,499 USD
View
B
Retailer 7
-
$9,273 AUD
$6,499 USD
View
B
Retailer 8
-
$13,664 AUD
£7,540 GBP
View
Most Expensive
C
NZ Jewellers
2152b405-07c6-46ab-a548-fd6aa0b275c8 · Oct 30
$15,512 AUD
$10,871 USD
View
8 more retailers have this diamond
Prices start from $8,246 AUDSave up to $7,266 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
$8,246 AUD