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Marquise|Natural|IGI

1.00ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 825619090

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 825619090

Diamond specifications and retailer prices

From $1,911 AUD
As of November 6, 2026
Save $4,352 AUD (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,263 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 825619090. Listed at 14 retailers as of November 5, 2026, with prices from $1,911 to $6,263, a $4,352 spread on the same certified stone. NZ Jewellers lists it at $6,263. 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 angle38.3°
Pavilion angle39.9°
OriginNatural
Grading LabIGI
CertificateIGI 825619090
Dimensions9.71 × 5.11 × 3.32 mm
L/W Ratio1.90
Girdle conditionFaceted
Top View
9.71 mm5.11 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825619090
Side View
Table 60.0%Crown 38.3°Girdle: STK-VTKPavilion 39.9°Culet: NoneDepth 65.0%

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: $6,263 AUD|Low: $1,911 AUD|High: $6,263 AUD|Avg: $3,098 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$1,911 AUD
Retailer 12$2,340 AUD
Retailer 10$2,567 AUD
Retailer 11$2,567 AUD
Retailer 9$2,685 AUD
Retailer 3$2,688 AUD
Retailer 4$2,767 AUD
Retailer 13$2,809 AUD
Retailer 8$2,823 AUD
Retailer 5$2,962 AUD
Retailer 6$3,254 AUD
Retailer 7$4,486 AUD
NZ Jewellers$6,263 AUD

45 data points across 13 retailers

14 retailers$1,911 AUD to $6,263 AUD

A
Cheapest Retailer
-
$1,911 AUD
B+
Retailer 2
-
$2,340 AUD
View
Retailer 3
-
$2,567 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$2,567 AUD
View
B+
Retailer 5
-
$2,685 AUD
View
B+
Retailer 6
-
$2,688 AUD
View
B+
Retailer 7
-
$2,767 AUD
View
B+
Retailer 8
-
$2,809 AUD
View
B+
Retailer 9
-
$2,823 AUD
View
B+
Retailer 10
-
$2,962 AUD
View
B+
Retailer 11
-
$3,254 AUD
View
Retailer 12
-
$3,388 AUD
View
Price last confirmed 61 days ago
B
Retailer 13
-
$4,486 AUD
View
Most Expensive
B
NZ Jewellers
9ac19a1d-c571-4bc1-ac06-51c02786f755 · Nov 5
$6,263 AUD
$4,303 USD
View
13 more retailers have this diamond
Prices start from $1,911 AUDSave up to $4,352 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
$1,911 AUD