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Round|Natural|IGI

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • IGI 779634139

Shape and cutting style on the report: Round brilliant

Certificate IGI 779634139

Diamond specifications and retailer prices

From $2,756 AUD
As of November 5, 2026
Save $4,461 AUD (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,217 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 779634139. Listed at 11 retailers as of November 5, 2026, with prices from $2,756 to $7,217, a $4,461 spread on the same certified stone. NZ Jewellers lists it at $7,217. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 779634139
Dimensions6.84 × 6.86 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.84 mm6.86 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 779634139
Side View
Table 57.0%Crown 33.6°Girdle: THN-MEDPavilion 41.3°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,217 AUD|Low: $2,696 AUD|High: $7,395 AUD|Avg: $4,078 AUD|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$2,756 AUD
Retailer 2$3,030 AUD
Retailer 7$3,121 AUD
Retailer 9$3,187 AUD
Retailer 8$3,440 AUD
Retailer 3$3,453 AUD
Retailer 11$3,611 AUD
Retailer 10$3,983 AUD
Retailer 6$4,177 AUD
Retailer 5$6,031 AUD
NZ Jewellers$7,217 AUD

36 data points across 11 retailers

11 retailers$2,756 AUD to $7,217 AUD

A
Cheapest Retailer
-
$2,756 AUD
A
Retailer 2
-
$3,030 AUD
View
A
Retailer 3
-
$3,121 AUD
View
A
Retailer 4
-
$3,187 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,440 AUD
View
A
Retailer 6
-
$3,453 AUD
View
A
Retailer 7
-
$3,611 AUD
View
A
Retailer 8
-
$3,983 AUD
View
A
Retailer 9
-
$4,177 AUD
View
B+
Retailer 10
-
$6,031 AUD
View
Most Expensive
B+
NZ Jewellers
2729b77f-b415-4795-b31a-ecc61c79a24e · Nov 5
$7,217 AUD
$5,052 USD
View
10 more retailers have this diamond
Prices start from $2,756 AUDSave up to $4,461 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
1.21ct Round
$2,756 AUD