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Cushion|Lab Grown|IGI

1.67ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG533220807

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG533220807

Diamond specifications and retailer prices

From €272 EUR
$304 USD
As of October 30, 2026
Save €1,151 EUR (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,423 EUR 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 top-tier cut grade and certified by IGI LG533220807 or 533220807. Listed at 14 retailers as of October 30, 2026, with prices from €272 to €1,423, a €1,151 spread on the same certified stone. Brilliant Earth lists it at €1,423. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG533220807
Dimensions6.98 × 6.95 × 4.56 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
6.98 mm6.95 mm1.67 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG533220807
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 65.6%

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 30
Current: €1,423 EUR|Low: €269 EUR|High: €1,441 EUR|Avg: €633 EUR|-1.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 3€272 EUR
Retailer 12€301 EUR
Retailer 2€335 EUR
Retailer 11€403 EUR
Retailer 7€443 EUR
Retailer 5€524 EUR
Retailer 6€535 EUR
Retailer 4€541 EUR
Retailer 10€763 EUR
Retailer 9€962 EUR
Retailer 8€1,212 EUR
Brilliant Earth€1,423 EUR

42 data points across 12 retailers

14 retailers€272 EUR to €1,423 EUR

A
Cheapest Retailer
-
€272 EUR
$304 USD
Final sale: no returns
A
Retailer 2
-
€301 EUR
$336 USD
View
A
Retailer 3
-
€335 EUR
£295 GBP
View
B+
Retailer 4
-
€403 EUR
$450 USD
View
A
Retailer 5
-
€443 EUR
$495 USD
View
A
Retailer 6
-
€524 EUR
£461 GBP
View
A
Retailer 7
-
€535 EUR
View
B+
Retailer 8
-
€541 EUR
$604 USD
View
B+
Retailer 9
-
€544 EUR
$608 USD
View
B+
Retailer 10
-
€763 EUR
$852 USD
View
Retailer 11
-
€962 EUR
$1,075 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
€1,013 EUR
$1,131 USD
View
B
Retailer 13
-
€1,212 EUR
£1,066 GBP
View
Most Expensive
B
Brilliant Earth
11226141A · Oct 31
€1,423 EUR
$1,590 USD
View
13 more retailers have this diamond
Prices start from €272 EURSave up to €1,151 EUR

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
€272 EUR