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Marquise|Natural|IGI

1.21ct E SI2 Marquise Natural Diamond

VG • E/SI2 • IGI 830653516

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 830653516

Diamond specifications and retailer prices

From $4,243 NZD
As of November 5, 2026
Save $3,636 NZD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,879 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 830653516. Listed at 8 retailers as of November 5, 2026, with prices from $4,243 to $7,879, a $3,636 spread on the same certified stone. Helzberg Diamonds lists it at $7,879. 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
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 830653516
Dimensions10.57 × 5.59 × 3.35 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
10.57 mm5.59 mm1.21 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 830653516
Side View
Table 60.0%Crown 39°Girdle: MediumPavilion 38.7°Culet: NoneDepth 59.9%

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: $7,879 NZD|Low: $4,237 NZD|High: $7,879 NZD|Avg: $6,046 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$4,243 NZD
Retailer 5$4,506 NZD
Retailer 6$4,584 NZD
Retailer 7$5,580 NZD
Retailer 2$5,879 NZD
Retailer 4$7,534 NZD
Helzberg Diamonds$7,879 NZD

12 data points across 7 retailers

8 retailers$4,243 NZD to $7,879 NZD

A
Cheapest Retailer
-
$4,243 NZD
A
Retailer 2
-
$4,506 NZD
View
A
Retailer 3
-
$4,563 NZD
View
A
Retailer 4
-
$4,584 NZD
View
B+
Retailer 5
-
$5,580 NZD
View
A
Retailer 6
-
$5,879 NZD
View
B+
Retailer 7
-
$7,534 NZD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOJGMLJLHM · Nov 6
$7,879 NZD
$4,429 USD
View
7 more retailers have this diamond
Prices start from $4,243 NZDSave up to $3,636 NZD

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
1.21ct Marquise
$4,243 NZD