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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 $228 USD
As of October 27, 2026
Save $1,612 USD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,840 USD 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 $228 to $1,840, a $1,612 spread on the same certified stone. Do Amore Diamonds lists it at $1,840. 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
Color
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

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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: $1,840 USD|Low: $152 USD|High: $1,950 USD|Avg: $841 USD|-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$228 USD
Retailer 4$417 USD
Retailer 8$468 USD
Retailer 9$561 USD
Retailer 6$566 USD
Retailer 7$806 USD
Retailer 3$865 USD
Retailer 2$1,055 USD
Retailer 10$1,500 USD
Do Amore Diamonds$1,840 USD

14 data points across 10 retailers

6 retailers$228 USD to $1,840 USD

A
Cheapest Retailer
-
$228 USD
Final sale: no returns
B+
Retailer 2
-
$417 USD
View
B+
Retailer 3
-
$865 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$925 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$1,055 USD
£831 GBP
View
Most Expensive
B
Do Amore Diamonds
27-C12E4A2F5 · Oct 27
$1,840 USD
View
5 more retailers have this diamond
Prices start from $228 USDSave up to $1,612 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
1.67ct Cushion
$228 USD