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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 $3,215 USD
As of November 1, 2026
Save $3,253 USD (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,468 USD at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from $3,215 to $6,468, a $3,253 spread on the same certified stone. NZ Jewellers lists it at $6,468. 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
Color
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: $6,468 USD|Low: $3,215 USD|High: $6,845 USD|Avg: $4,546 USD|-5.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$3,215 USD
Retailer 8$3,683 USD
Retailer 6$3,712 USD
Retailer 4$3,727 USD
Retailer 3$3,968 USD
Retailer 5$4,427 USD
Retailer 2$6,389 USD
NZ Jewellers$6,468 USD

28 data points across 8 retailers

9 retailers$3,215 USD to $6,468 USD

A
Cheapest Retailer
-
$3,215 USD
B+
Retailer 2
-
$3,231 USD
SGD 4,366 SGD
View
B+
Retailer 3
-
$3,683 USD
View
B+
Retailer 4
-
$3,712 USD
View
B+
Retailer 5
-
$3,727 USD
£2,934 GBP
View
B+
Retailer 6
-
$3,968 USD
View
B
Retailer 7
-
$4,427 USD
€4,216 EUR
View
B
Retailer 8
-
$6,389 USD
£5,031 GBP
View
Most Expensive
B
NZ Jewellers
472a3a6f-37ec-4efc-8c1b-ed4c08033d22 · Oct 30
$6,468 USD
View
8 more retailers have this diamond
Prices start from $3,215 USDSave up to $3,253 USD

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
$3,215 USD