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Marquise|Natural|IGI

1.00ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 825618962

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 825618962

Diamond specifications and retailer prices

From $1,958 AUD
As of November 6, 2026
Save $4,455 AUD (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,412 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 825618962. Listed at 14 retailers as of November 5, 2026, with prices from $1,958 to $6,412, a $4,455 spread on the same certified stone. NZ Jewellers lists it at $6,412. 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
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle32°
OriginNatural
Grading LabIGI
CertificateIGI 825618962
Dimensions13.21 × 4.58 × 2.67 mm
L/W Ratio2.88
Girdle conditionFaceted
Culet sizeNone
Top View
13.21 mm4.58 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825618962
Side View
Table 60.0%Crown 36.2°Girdle: STK-VTKPavilion 32°Culet: NoneDepth 58.3%

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: $6,412 AUD|Low: $1,958 AUD|High: $6,412 AUD|Avg: $3,171 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
November 6, 2026
Retailer 2$1,958 AUD
Retailer 11$2,396 AUD
Retailer 10$2,628 AUD
Retailer 12$2,628 AUD
Retailer 9$2,751 AUD
Retailer 3$2,755 AUD
Retailer 4$2,828 AUD
Retailer 13$2,867 AUD
Retailer 8$2,889 AUD
Retailer 5$3,033 AUD
Retailer 6$3,334 AUD
Retailer 7$4,592 AUD
NZ Jewellers$6,412 AUD

46 data points across 13 retailers

14 retailers$1,958 AUD to $6,412 AUD

A
Cheapest Retailer
-
$1,958 AUD
B+
Retailer 2
-
$2,396 AUD
View
B+
Retailer 3
-
$2,628 AUD
View
Retailer 4
-
$2,628 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,751 AUD
View
B+
Retailer 6
-
$2,755 AUD
View
B+
Retailer 7
-
$2,828 AUD
View
B+
Retailer 8
-
$2,867 AUD
View
B+
Retailer 9
-
$2,889 AUD
View
B+
Retailer 10
-
$3,033 AUD
View
Retailer 11
-
$3,248 AUD
View
Price last confirmed 61 days ago
B+
Retailer 12
-
$3,334 AUD
View
B
Retailer 13
-
$4,592 AUD
View
Most Expensive
C
NZ Jewellers
e48479fd-feb9-4893-b88b-db6eb0ab4328 · Nov 5
$6,412 AUD
$4,406 USD
View
13 more retailers have this diamond
Prices start from $1,958 AUDSave up to $4,455 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
$1,958 AUD