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Cushion|Lab Grown|IGI

1.56ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG488122888

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG488122888

Diamond specifications and retailer prices

From $388 USD
As of October 28, 2026
Save $2,692 USD (87%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,080 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.56ct lab-grown cushion diamond

This 1.56ct 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 top-tier cut grade and certified by IGI LG488122888 or 488122888. Listed at 5 retailers as of October 28, 2026, with prices from $388 to $3,080, a $2,692 spread on the same certified stone. Do Amore Diamonds lists it at $3,080. 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

1.56
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488122888
Dimensions7.19 × 6.48 × 4.30 mm
L/W Ratio1.11
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
7.19 mm6.48 mm1.56 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488122888
Side View
Table 63.0%Crown 33°Girdle: THN-STKPavilion 39.2°Culet: NoneDepth 66.4%

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: $3,080 USD|Low: $277 USD|High: $3,080 USD|Avg: $1,180 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 4$388 USD
Retailer 5$434 USD
Retailer 3$691 USD
Retailer 6$835 USD
Retailer 7$882 USD
Retailer 8$1,283 USD
Retailer 2$1,863 USD
Do Amore Diamonds$3,080 USD

10 data points across 8 retailers

5 retailers$388 USD to $3,080 USD

A
Cheapest Retailer
-
$388 USD
Final sale: no returns
A
Retailer 2
-
$434 USD
View
B+
Retailer 3
-
$691 USD
View
B
Retailer 4
-
$1,863 USD
£1,467 GBP
View
Most Expensive
B
Do Amore Diamonds
27-696BED09D · Oct 29
$3,080 USD
View
4 more retailers have this diamond
Prices start from $388 USDSave up to $2,692 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
1.56ct Cushion
$388 USD