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Marquise|Natural|IGI

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 819640232

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 819640232

Diamond specifications and retailer prices

From $4,408 AUD
As of November 5, 2026
Save $5,737 AUD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,146 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 819640232. Listed at 8 retailers as of November 5, 2026, with prices from $4,408 to $10,146, a $5,737 spread on the same certified stone. NZ Jewellers lists it at $10,146. 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

1.20
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle44.5°
Pavilion angle37.6°
OriginNatural
Grading LabIGI
CertificateIGI 819640232
Dimensions10.81 × 5.37 × 3.43 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Top View
10.81 mm5.37 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819640232
Side View
Table 58.0%Crown 44.5°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 63.9%

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 5
Current: $10,146 AUD|Low: $4,282 AUD|High: $10,776 AUD|Avg: $7,255 AUD|-5.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4$4,408 AUD
Retailer 8$5,644 AUD
Retailer 2$5,650 AUD
Retailer 5$5,823 AUD
Retailer 7$5,823 AUD
Retailer 3$6,495 AUD
Retailer 6$9,738 AUD
NZ Jewellers$10,146 AUD

41 data points across 8 retailers

8 retailers$4,408 AUD to $10,146 AUD

A
Cheapest Retailer
-
$4,408 AUD
B+
Retailer 2
-
$5,644 AUD
View
B+
Retailer 3
-
$5,650 AUD
View
B
Retailer 4
-
$5,823 AUD
View
B
Retailer 5
-
$5,823 AUD
View
B
Retailer 6
-
$6,495 AUD
View
B
Retailer 7
-
$9,738 AUD
View
Most Expensive
B
NZ Jewellers
feacff89-567c-431f-b9b9-fe8b2b88d6d9 · Nov 5
$10,146 AUD
$6,971 USD
View
7 more retailers have this diamond
Prices start from $4,408 AUDSave up to $5,737 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
1.20ct Marquise
$4,408 AUD