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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 $621 NZD
$349 USD
As of October 25, 2026
Save $3,830 NZD (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,451 NZD 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 $621 to $4,451, a $3,830 spread on the same certified stone. Do Amore Diamonds lists it at $4,451. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $4,451 NZD|Low: $490 NZD|High: $4,451 NZD|Avg: $1,656 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$621 NZD
Retailer 7$778 NZD
Retailer 5$783 NZD
Retailer 9$1,024 NZD
Retailer 2$1,220 NZD
Retailer 6$1,567 NZD
Retailer 11$1,635 NZD
Retailer 3$2,236 NZD
Retailer 10$2,493 NZD
Retailer 4$2,761 NZD
Do Amore Diamonds$4,451 NZD

36 data points across 11 retailers

11 retailers$621 NZD to $4,451 NZD

A
Cheapest Retailer
-
$621 NZD
$349 USD
A
Retailer 2
-
$778 NZD
$437 USD
View
B+
Retailer 3
-
$783 NZD
$440 USD
View
B+
Retailer 4
-
$1,024 NZD
$575 USD
View
B+
Retailer 5
-
$1,220 NZD
£539 GBP
View
Retailer 6
-
$1,567 NZD
$880 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$1,635 NZD
$918 USD
View
B
Retailer 8
-
$2,236 NZD
$1,256 USD
View
B
Retailer 9
-
$2,493 NZD
$1,400 USD
View
B
Retailer 10
-
$2,761 NZD
£1,221 GBP
View
Most Expensive
C
Do Amore Diamonds
27-2807F5B39 · Oct 29
$4,451 NZD
$2,500 USD
View
10 more retailers have this diamond
Prices start from $621 NZDSave up to $3,830 NZD

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
$621 NZD