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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591369468

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591369468

Diamond specifications and retailer prices

From $252 SGD
$197 USD
As of October 30, 2026
Save $1,914 SGD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,166 SGD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG591369468 or 591369468. Listed at 14 retailers as of October 29, 2026, with prices from $252 to $2,166, a $1,914 spread on the same certified stone. Do Amore Diamonds lists it at $2,166. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591369468
Dimensions7.37 × 6.35 × 4.35 mm
L/W Ratio1.16
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
7.37 mm6.35 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591369468
Side View
Table 63.0%Crown 36.5°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 68.5%

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 30
Current: $563 SGD|Low: $252 SGD|High: $2,333 SGD|Avg: $948 SGD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$252 SGD
Retailer 9$377 SGD
Retailer 2$509 SGD
Retailer 1$563 SGD
Retailer 8$711 SGD
Retailer 5$1,158 SGD
Retailer 3$1,450 SGD
Retailer 6$1,653 SGD
Retailer 4$1,769 SGD

42 data points across 9 retailers

14 retailers$252 SGD to $2,166 SGD

A
Cheapest Retailer
-
$252 SGD
$197 USD
Final sale: no returns
B+
Retailer 2
-
$377 SGD
$294 USD
View
A
Retailer 3
-
$467 SGD
$364 USD
View
A
Retailer 4
-
$509 SGD
€378 EUR
View
A
Retailer 5
-
$563 SGD
£346 GBP
View
B+
Retailer 6
-
$711 SGD
$555 USD
View
B+
Retailer 7
-
$1,055 SGD
$823 USD
View
B+
Retailer 8
-
$1,158 SGD
$904 USD
View
B
Retailer 9
-
$1,450 SGD
£891 GBP
View
B
Retailer 10
-
$1,628 SGD
$1,270 USD
View
B
Retailer 11
-
$1,628 SGD
$1,270 USD
View
B
Retailer 12
-
$1,653 SGD
$1,290 USD
View
B
Retailer 13
-
$1,769 SGD
$1,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 29
$2,166 SGD
$1,690 USD
View
13 more retailers have this diamond
Prices start from $252 SGDSave up to $1,914 SGD

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
$252 SGD