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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG700516097

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

Certificate IGI LG700516097

Diamond specifications and retailer prices

From $259 USD
As of October 28, 2026
Save $901 USD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,160 USD at MOH London · As of October 29, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG700516097 or 700516097. Listed at 8 retailers as of October 28, 2026, with prices from $259 to $1,160, a $901 spread on the same certified stone. MOH London lists it at $1,160. 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
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700516097
Dimensions6.60 × 6.60 × 4.16 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
6.60 mm6.60 mm1.55 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700516097
Side View
Table 63.0%Crown 37.3°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 63.0%

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 28
Current: $1,160 USD|Low: $161 USD|High: $1,179 USD|Avg: $574 USD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 9$161 USD
Retailer 4$259 USD
Retailer 8$291 USD
Retailer 6$392 USD
Retailer 3$486 USD
Retailer 2$541 USD
Retailer 7$900 USD
Retailer 5$978 USD
MOH London$1,160 USD

40 data points across 9 retailers

8 retailers$259 USD to $1,160 USD

A
Cheapest Retailer
-
$259 USD
Final sale: no returns
B+
Retailer 2
-
$291 USD
View
B+
Retailer 3
-
$392 USD
View
B+
Retailer 4
-
$486 USD
View
B+
Retailer 5
-
$541 USD
£426 GBP
View
B
Retailer 6
-
$900 USD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$978 USD
View
Most Expensive
B
MOH London
LG700516097 · Oct 29
$1,160 USD
£913 GBP
View
7 more retailers have this diamond
Prices start from $259 USDSave up to $901 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
$259 USD