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Cushion|Lab Grown|IGI

1.67ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG538297406

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG538297406

Diamond specifications and retailer prices

From $405 NZD
$228 USD
As of November 1, 2026
Save $2,257 NZD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,661 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG538297406 or 538297406. Listed at 14 retailers as of October 31, 2026, with prices from $405 to $2,661, a $2,257 spread on the same certified stone. Brilliant Earth lists it at $2,661. 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
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538297406
Dimensions6.62 × 6.59 × 4.27 mm
L/W Ratio1.00
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
6.62 mm6.59 mm1.67 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG538297406
Side View
Table 63.0%Crown 37.8°Girdle: THK-VTKPavilion 31.9°Culet: NoneDepth 64.8%

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: Nov 1
Current: $2,661 NZD|Low: $405 NZD|High: $2,839 NZD|Avg: $1,170 NZD|-6.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 11$405 NZD
Retailer 9$451 NZD
Retailer 7$607 NZD
Retailer 5$734 NZD
Retailer 4$828 NZD
Retailer 3$913 NZD
Retailer 10$1,049 NZD
Retailer 6$1,091 NZD
Retailer 8$1,854 NZD
Retailer 2$2,105 NZD
Brilliant Earth$2,661 NZD

43 data points across 11 retailers

14 retailers$405 NZD to $2,661 NZD

A
Cheapest Retailer
-
$405 NZD
$228 USD
Final sale: no returns
Retailer 2
-
$451 NZD
$254 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$607 NZD
$342 USD
View
A
Retailer 4
-
$734 NZD
€394 EUR
View
B+
Retailer 5
-
$828 NZD
£367 GBP
View
B+
Retailer 6
-
$913 NZD
$514 USD
View
B+
Retailer 7
-
$1,038 NZD
$585 USD
View
B+
Retailer 8
-
$1,049 NZD
$591 USD
View
B+
Retailer 9
-
$1,091 NZD
$615 USD
View
B
Retailer 10
-
$1,541 NZD
$869 USD
View
Retailer 11
-
$1,854 NZD
$1,045 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
$2,105 NZD
£934 GBP
View
B
Retailer 13
-
$2,143 NZD
$1,208 USD
View
Most Expensive
B
Brilliant Earth
10789091A · Oct 31
$2,661 NZD
$1,500 USD
View
13 more retailers have this diamond
Prices start from $405 NZDSave up to $2,257 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
$405 NZD