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Round|Lab Grown|IGI

0.73ct E SI2 Round Lab Grown Diamond

EX • E/SI2

Diamond specifications and retailer prices

From $221 AUD
$155 USD
As of October 27, 2026
Save $918 AUD (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,139 AUD at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 0.73ct lab-grown round diamond

This 0.73ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of October 27, 2026, with prices from $221 to $1,139, a $918 spread on the same certified stone. Helzberg Diamonds lists it at $1,139. 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

0.73
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions5.79 × 5.82 × 3.57 mm
L/W Ratio1.01
Top View
5.79 mm5.82 mm0.73 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 57.0%CrownGirdlePavilionCuletDepth 61.5%

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: Oct 27
Current: $1,139 AUD|Low: $221 AUD|High: $1,193 AUD|Avg: $621 AUD|-4.5%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
October 21, 2026
Retailer 2$221 AUD
Retailer 4$222 AUD
Retailer 3$665 AUD
Helzberg Diamonds$1,139 AUD

5 data points across 4 retailers

3 retailers$221 AUD to $1,139 AUD

A
Cheapest Retailer
-
$221 AUD
$155 USD
B
Retailer 2
-
$665 AUD
$467 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZNGMLKOPPP · Oct 29
$1,139 AUD
$800 USD
View
2 more retailers have this diamond
Prices start from $221 AUDSave up to $918 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
0.73ct Round
$221 AUD