Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG850682235

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

Certificate IGI LG850682235

Diamond specifications and retailer prices

From $638 USD
As of October 28, 2026
Save $2,322 USD (78%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,960 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG850682235 or 850682235. Listed at 6 retailers as of October 28, 2026, with prices from $638 to $2,960, a $2,322 spread on the same certified stone. Brilliant Earth lists it at $2,960. 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

1.55
Carat
E
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850682235
Dimensions6.52 × 6.52 × 4.32 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.52 mm6.52 mm1.55 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850682235
Side View
Table 60.0%Crown 36.9°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 66.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $822 USD|Low: $638 USD|High: $1,648 USD|Avg: $1,086 USD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 4$638 USD
Retailer 2$795 USD
Retailer 1$822 USD
Retailer 3$1,101 USD
Retailer 5$1,648 USD

3 data points across 5 retailers

6 retailers$638 USD to $2,960 USD

A
Cheapest Retailer
-
$638 USD
A
Retailer 2
-
$795 USD
€757 EUR
View
A
Retailer 3
-
$822 USD
£647 GBP
View
A
Retailer 4
-
$1,101 USD
View
B+
Retailer 5
-
$1,648 USD
View
Most Expensive
B
Brilliant Earth
22329053A · Oct 28
$2,960 USD
View
5 more retailers have this diamond
Prices start from $638 USDSave up to $2,322 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
1.55ct Cushion
$638 USD