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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 $552 USD
As of October 28, 2026
Save $3,168 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,720 USD at Brilliant Earth · As of October 28, 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 $552 to $3,720, a $3,168 spread on the same certified stone. Brilliant Earth lists it at $3,720. 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
Color
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: $3,720 USD|Low: $552 USD|High: $3,830 USD|Avg: $1,378 USD|-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$552 USD
Retailer 12$612 USD
Retailer 8$655 USD
Retailer 11$820 USD
Retailer 6$1,011 USD
Retailer 2$1,031 USD
Retailer 5$1,051 USD
Retailer 4$1,363 USD
Retailer 10$1,384 USD
Retailer 9$1,435 USD
Retailer 7$2,558 USD
Brilliant Earth$3,720 USD

42 data points across 12 retailers

15 retailers$552 USD to $3,720 USD

A
Cheapest Retailer
-
$552 USD
Final sale: no returns
A
Retailer 2
-
$612 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$655 USD
View
A
Retailer 4
-
$820 USD
View
A
Retailer 5
-
$1,011 USD
£796 GBP
View
A
Retailer 6
-
$1,031 USD
€982 EUR
View
A
Retailer 7
-
$1,051 USD
ZAR 16,985 ZAR
View
A
Retailer 8
-
$1,363 USD
View
A
Retailer 9
-
$1,384 USD
View
A
Retailer 10
-
$1,435 USD
A$2,208 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$1,994 USD
View
B+
Retailer 12
-
$2,130 USD
View
B+
Retailer 13
-
$2,558 USD
£2,014 GBP
View
B
Retailer 14
-
$3,320 USD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21311625A · Oct 28
$3,720 USD
View
14 more retailers have this diamond
Prices start from $552 USDSave up to $3,168 USD

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
$552 USD