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Marquise|Natural|IGI

1.00ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 689598934

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 689598934

Diamond specifications and retailer prices

From $2,040 AUD
As of November 6, 2026
Save $1,832 AUD (47%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,829 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 689598934. Listed at 20 retailers as of November 1, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.7°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 689598934
Dimensions9.42 × 5.28 × 3.42 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizePointed
Top View
9.42 mm5.28 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 689598934
Side View
Table 56.0%Crown 37.7°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 64.8%

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 6
Current: $2,484 AUD|Low: $2,022 AUD|High: $4,235 AUD|Avg: $2,527 AUD|-4.2%
Retailer 1
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
November 6, 2026
Retailer 13$2,040 AUD
Retailer 3$2,049 AUD
Retailer 8$2,059 AUD
Retailer 4$2,206 AUD
Retailer 2$2,212 AUD
Retailer 12$2,212 AUD
Retailer 14$2,311 AUD
Retailer 11$2,343 AUD
Retailer 6$2,409 AUD
Retailer 1$2,484 AUD
Retailer 5$2,551 AUD
Retailer 7$2,698 AUD
Retailer 9$3,007 AUD
Retailer 10$3,873 AUD

44 data points across 14 retailers

20 retailers$2,040 AUD to $3,873 AUD

A
Cheapest Retailer
-
$2,040 AUD
Final sale: no returns
A
Retailer 2
-
$2,049 AUD
View
A
Retailer 3
-
$2,059 AUD
View
A
Retailer 4
-
$2,206 AUD
View
Retailer 5
-
$2,212 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$2,212 AUD
View
A
Retailer 7
-
$2,311 AUD
View
B+
Retailer 8
-
$2,343 AUD
View
Retailer 9
-
$2,390 AUD
View
Price last confirmed 54 days ago
Retailer 10
-
$2,390 AUD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
$2,409 AUD
View
A
Retailer 12
-
$2,484 AUD
View
Retailer 13
-
$2,500 AUD
View
Price last confirmed 37 days ago
B+
Retailer 14
-
$2,551 AUD
View
B+
Retailer 15
-
$2,698 AUD
View
Retailer 16
-
$2,758 AUD
View
Price last confirmed 57 days ago
Retailer 17
-
$2,758 AUD
View
Price last confirmed 39 days ago
B+
Retailer 18
-
$3,007 AUD
View
B
Retailer 19
-
$3,873 AUD
View
Most Expensive
NZ Jewellers
36f09cd1-85cf-45be-90c3-571855ff41b1 · Sep 30
$5,829 AUD
$4,005 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from $2,040 AUDSave up to $1,832 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
1.00ct Marquise
$2,040 AUD