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Marquise|Natural|IGI

1.21ct J SI2 Marquise Natural Diamond

VG • J/SI2 • IGI 667406295

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 667406295

Diamond specifications and retailer prices

From $1,799 AUD
As of November 4, 2026
Save $2,449 AUD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,248 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 667406295. Listed at 7 retailers as of November 4, 2026, with prices from $1,799 to $4,248, a $2,449 spread on the same certified stone. MOH London lists it at $4,248. 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

1.21
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.7°
Pavilion angle37.2°
OriginNatural
Grading LabIGI
CertificateIGI 667406295
Dimensions10.37 × 5.47 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Top View
10.37 mm5.47 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 667406295
Side View
Table 58.0%Crown 43.7°Girdle: MED-STKPavilion 37.2°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,248 AUD|Low: $1,664 AUD|High: $4,321 AUD|Avg: $2,447 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$1,664 AUD
Retailer 7$1,799 AUD
Retailer 5$2,038 AUD
Retailer 6$2,270 AUD
Retailer 4$2,321 AUD
Retailer 2$2,428 AUD
Retailer 3$2,729 AUD
Retailer 9$2,758 AUD
MOH London$4,248 AUD

32 data points across 9 retailers

7 retailers$1,799 AUD to $4,248 AUD

B+
Cheapest Retailer
-
$1,799 AUD
B+
Retailer 2
-
$2,038 AUD
View
Final sale: no returns
B+
Retailer 3
-
$2,270 AUD
View
B+
Retailer 4
-
$2,321 AUD
View
B+
Retailer 5
-
$2,428 AUD
View
B+
Retailer 6
-
$2,729 AUD
View
Most Expensive
B
MOH London
66795138C · Nov 7
$4,248 AUD
£2,298 GBP
View
6 more retailers have this diamond
Prices start from $1,799 AUDSave up to $2,449 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.

B+
1.21ct Marquise
$1,799 AUD