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Cushion|Lab Grown|IGI

1.67ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG579366652

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG579366652

Diamond specifications and retailer prices

From $325 AUD
$228 USD
As of October 27, 2026
Save $2,295 AUD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,619 AUD at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.67ct lab-grown cushion diamond

This 1.67ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG579366652 or 579366652. Listed at 6 retailers as of October 27, 2026, with prices from $325 to $2,619, a $2,295 spread on the same certified stone. Do Amore Diamonds lists it at $2,619. 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

1.67
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579366652
Dimensions7.82 × 6.36 × 4.35 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.82 mm6.36 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579366652
Side View
Table 60.0%Crown 35.9°Girdle: THN-STKPavilion 38.2°Culet: NoneDepth 68.4%

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 27
Current: $2,619 AUD|Low: $216 AUD|High: $2,776 AUD|Avg: $1,197 AUD|-5.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 5$325 AUD
Retailer 4$594 AUD
Retailer 8$666 AUD
Retailer 9$799 AUD
Retailer 6$806 AUD
Retailer 7$1,147 AUD
Retailer 3$1,231 AUD
Retailer 2$1,502 AUD
Retailer 10$2,135 AUD
Do Amore Diamonds$2,619 AUD

14 data points across 10 retailers

6 retailers$325 AUD to $2,619 AUD

A
Cheapest Retailer
-
$325 AUD
$228 USD
Final sale: no returns
B+
Retailer 2
-
$594 AUD
$417 USD
View
B+
Retailer 3
-
$1,231 AUD
$865 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$1,317 AUD
$925 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$1,502 AUD
£831 GBP
View
Most Expensive
B
Do Amore Diamonds
27-C12E4A2F5 · Oct 27
$2,619 AUD
$1,840 USD
View
5 more retailers have this diamond
Prices start from $325 AUDSave up to $2,295 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
1.67ct Cushion
$325 AUD