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Cushion|Lab Grown|IGI

1.73ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG598342461

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG598342461

Diamond specifications and retailer prices

From $786 AUD
$552 USD
As of October 28, 2026
Save $4,509 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,295 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG598342461 or 598342461. Listed at 15 retailers as of October 28, 2026, with prices from $786 to $5,295, a $4,509 spread on the same certified stone. Brilliant Earth lists it at $5,295. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598342461
Dimensions7.87 × 6.45 × 4.49 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.87 mm6.45 mm1.73 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598342461
Side View
Table 61.0%Crown 33.4°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 69.6%

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 28
Current: $5,295 AUD|Low: $786 AUD|High: $5,452 AUD|Avg: $1,962 AUD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3$786 AUD
Retailer 12$871 AUD
Retailer 8$932 AUD
Retailer 11$1,167 AUD
Retailer 2$1,444 AUD
Retailer 5$1,468 AUD
Retailer 6$1,497 AUD
Retailer 4$1,940 AUD
Retailer 10$1,970 AUD
Retailer 9$2,043 AUD
Retailer 7$3,641 AUD
Brilliant Earth$5,295 AUD

41 data points across 12 retailers

15 retailers$786 AUD to $5,295 AUD

A
Cheapest Retailer
-
$786 AUD
$552 USD
Final sale: no returns
Retailer 2
-
$871 AUD
$612 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$932 AUD
$655 USD
View
A
Retailer 4
-
$1,167 AUD
$820 USD
View
A
Retailer 5
-
$1,444 AUD
£799 GBP
View
A
Retailer 6
-
$1,468 AUD
€982 EUR
View
A
Retailer 7
-
$1,497 AUD
ZAR 16,985 ZAR
View
A
Retailer 8
-
$1,940 AUD
$1,363 USD
View
A
Retailer 9
-
$1,970 AUD
$1,384 USD
View
Retailer 10
-
$2,043 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$2,838 AUD
$1,994 USD
View
B+
Retailer 12
-
$3,031 AUD
$2,130 USD
View
B+
Retailer 13
-
$3,641 AUD
£2,014 GBP
View
Retailer 14
-
$4,726 AUD
$3,320 USD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21311625A · Oct 29
$5,295 AUD
$3,720 USD
View
14 more retailers have this diamond
Prices start from $786 AUDSave up to $4,509 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
1.73ct Cushion
$786 AUD