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Marquise|Natural|IGI

1.30ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 819640378

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 819640378

Diamond specifications and retailer prices

From $4,679 AUD
As of November 1, 2026
Save $5,008 AUD (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,687 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 819640378. Listed at 9 retailers as of November 1, 2026, with prices from $4,679 to $9,687, a $5,008 spread on the same certified stone. NZ Jewellers lists it at $9,687. 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

1.30
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle46.2°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 819640378
Dimensions10.71 × 5.42 × 3.57 mm
L/W Ratio1.98
Girdle conditionFaceted
Culet sizeNone
Top View
10.71 mm5.42 mm1.30 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819640378
Side View
Table 61.0%Crown 46.2°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 65.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $9,687 AUD|Low: $4,679 AUD|High: $9,962 AUD|Avg: $6,576 AUD|-2.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$4,679 AUD
Retailer 4$4,867 AUD
Retailer 9$5,360 AUD
Retailer 2$5,394 AUD
Retailer 5$5,561 AUD
Retailer 7$5,775 AUD
Retailer 3$6,412 AUD
Retailer 6$9,299 AUD
NZ Jewellers$9,687 AUD

32 data points across 9 retailers

9 retailers$4,679 AUD to $9,687 AUD

A
Cheapest Retailer
-
$4,679 AUD
B+
Retailer 2
-
$4,867 AUD
View
B+
Retailer 3
-
$5,360 AUD
View
B+
Retailer 4
-
$5,394 AUD
View
B+
Retailer 5
-
$5,561 AUD
View
B+
Retailer 6
-
$5,775 AUD
View
B
Retailer 7
-
$6,412 AUD
View
B
Retailer 8
-
$9,299 AUD
View
Most Expensive
B
NZ Jewellers
472a3a6f-37ec-4efc-8c1b-ed4c08033d22 · Nov 5
$9,687 AUD
$6,656 USD
View
8 more retailers have this diamond
Prices start from $4,679 AUDSave up to $5,008 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
1.30ct Marquise
$4,679 AUD