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Cushion|Lab Grown|IGI

1.67ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG520295377

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

Certificate IGI LG520295377

Diamond specifications and retailer prices

From $349 USD
As of October 25, 2026
Save $2,151 USD (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,500 USD at Do Amore Diamonds · As of October 29, 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 very-good cut grade and certified by IGI LG520295377 or 520295377. Listed at 11 retailers as of October 25, 2026, with prices from $349 to $2,500, a $2,151 spread on the same certified stone. Do Amore Diamonds lists it at $2,500. 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

1.67
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520295377
Dimensions6.77 × 6.70 × 4.66 mm
L/W Ratio1.01
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
6.77 mm6.70 mm1.67 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520295377
Side View
Table 62.5%Crown 35°Girdle: STK-VTKPavilion 39.8°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 25
Current: $2,500 USD|Low: $275 USD|High: $2,500 USD|Avg: $926 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8$349 USD
Retailer 7$437 USD
Retailer 5$440 USD
Retailer 9$575 USD
Retailer 2$685 USD
Retailer 6$880 USD
Retailer 11$918 USD
Retailer 3$1,256 USD
Retailer 10$1,400 USD
Retailer 4$1,551 USD
Do Amore Diamonds$2,500 USD

35 data points across 11 retailers

11 retailers$349 USD to $2,500 USD

A
Cheapest Retailer
-
$349 USD
A
Retailer 2
-
$437 USD
View
B+
Retailer 3
-
$440 USD
View
B+
Retailer 4
-
$575 USD
View
B+
Retailer 5
-
$685 USD
£539 GBP
View
B+
Retailer 6
-
$880 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$918 USD
View
B
Retailer 8
-
$1,256 USD
View
B
Retailer 9
-
$1,400 USD
View
B
Retailer 10
-
$1,551 USD
£1,221 GBP
View
Most Expensive
C
Do Amore Diamonds
27-2807F5B39 · Oct 29
$2,500 USD
View
10 more retailers have this diamond
Prices start from $349 USDSave up to $2,151 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
$349 USD