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Marquise|Natural|IGI

1.00ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 843628745

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 843628745

Diamond specifications and retailer prices

From $2,146 AUD
As of November 4, 2026
Save $3,500 AUD (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,645 AUD at NZ Jewellers · As of November 3, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 843628745. Listed at 12 retailers as of November 3, 2026, with prices from $2,146 to $5,645, a $3,500 spread on the same certified stone. NZ Jewellers lists it at $5,645. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle28.5°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 843628745
Dimensions10.75 × 5.25 × 2.98 mm
L/W Ratio2.05
Girdle conditionFaceted
Culet sizeMedium
Top View
10.75 mm5.25 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 843628745
Side View
Table 63.0%Crown 28.5°Girdle: MED-THKPavilion 41.2°Culet: MediumDepth 56.8%

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 4
Current: $5,645 AUD|Low: $2,136 AUD|High: $5,830 AUD|Avg: $2,810 AUD|-3.2%
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 3, 2026
Retailer 3$2,136 AUD
Retailer 13$2,146 AUD
Retailer 7$2,150 AUD
Retailer 5$2,314 AUD
Retailer 12$2,314 AUD
Retailer 11$2,361 AUD
Retailer 4$2,421 AUD
Retailer 2$2,637 AUD
Retailer 10$2,671 AUD
Retailer 8$2,826 AUD
Retailer 9$3,160 AUD
Retailer 6$4,054 AUD
NZ Jewellers$5,645 AUD

14 data points across 13 retailers

12 retailers$2,146 AUD to $5,645 AUD

A
Cheapest Retailer
-
$2,146 AUD
A
Retailer 2
-
$2,150 AUD
View
Retailer 3
-
$2,314 AUD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$2,314 AUD
View
A
Retailer 5
-
$2,361 AUD
View
A
Retailer 6
-
$2,421 AUD
View
A
Retailer 7
-
$2,637 AUD
View
B+
Retailer 8
-
$2,671 AUD
View
A
Retailer 9
-
$2,826 AUD
View
A
Retailer 10
-
$3,160 AUD
View
B+
Retailer 11
-
$4,054 AUD
View
Most Expensive
B
NZ Jewellers
dd248388-ee08-40d2-9639-c78f6ee0dd9a · Nov 3
$5,645 AUD
$3,952 USD
View
11 more retailers have this diamond
Prices start from $2,146 AUDSave up to $3,500 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
$2,146 AUD