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Cushion|Lab Grown|IGI

1.71ct E SI2 Cushion Lab Grown Diamond

GD • E/SI2 • IGI LG476167984

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG476167984

Diamond specifications and retailer prices

From $362 AUD
$254 USD
As of October 28, 2026
Save $1,820 AUD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,662 AUD at Brilliant Earth · As of October 2, 2026
View at Brilliant Earth

About this 1.71ct lab-grown cushion diamond

This 1.71ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG476167984 or 476167984. Listed at 11 retailers as of October 28, 2026, with a 504% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.71
Carat
E
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476167984
Dimensions6.96 × 6.75 × 4.59 mm
L/W Ratio1.03
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
6.96 mm6.75 mm1.71 ctE / SI2
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG476167984
Side View
Table 62.0%Crown 36.6°Girdle: MED-STKPavilion 39°Culet: NoneDepth 68.0%

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: Oct 28
Current: $2,662 AUD|Low: $362 AUD|High: $2,662 AUD|Avg: $1,167 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10$362 AUD
Retailer 4$491 AUD
Retailer 5$568 AUD
Retailer 6$749 AUD
Retailer 2$961 AUD
Retailer 9$1,328 AUD
Retailer 8$1,438 AUD
Retailer 7$2,028 AUD
Retailer 3$2,182 AUD
Brilliant Earth$2,662 AUD

42 data points across 10 retailers

11 retailers$362 AUD to $2,182 AUD

A
Cheapest Retailer
-
$362 AUD
$254 USD
Final sale: no returns
B+
Retailer 2
-
$491 AUD
$345 USD
View
B+
Retailer 3
-
$568 AUD
$399 USD
View
B+
Retailer 4
-
$749 AUD
$526 USD
View
B+
Retailer 5
-
$961 AUD
£532 GBP
View
B
Retailer 6
-
$1,298 AUD
CA$1,267 CAD
View
B
Retailer 7
-
$1,328 AUD
$933 USD
View
B
Retailer 8
-
$1,438 AUD
$1,010 USD
View
C
Retailer 9
-
$2,028 AUD
SGD 1,925 SGD
View
C
Retailer 10
-
$2,182 AUD
£1,207 GBP
View
Most Expensive
Brilliant Earth
21630500Y · Oct 2
$2,662 AUD
$1,870 USD
View
Price last confirmed 27 days ago
10 more retailers have this diamond
Prices start from $362 AUDSave up to $1,820 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
1.71ct Cushion
$362 AUD