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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591375639

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591375639

Diamond specifications and retailer prices

From $910 SGD
$710 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $910 SGD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591375639 or 591375639. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591375639
Dimensions7.41 × 5.20 × 3.51 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.41 mm5.20 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591375639
Side View
Table 59.0%Crown 33.8°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 67.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $910 SGD|Low: $355 SGD|High: $1,730 SGD|Avg: $692 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
May 22, 2026
Retailer 8$360 SGD
Retailer 3$376 SGD
Retailer 7$422 SGD
Retailer 10$499 SGD
Retailer 9$588 SGD
Retailer 5$596 SGD
Retailer 4$661 SGD
Retailer 2$855 SGD
Brilliant Earth$910 SGD
Retailer 6$1,692 SGD

61 data points across 10 retailers

1 retailer

B
Brilliant Earth
7771741Y · Nov 6
$910 SGD
$710 USD
View

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.

B
1.00ct Cushion
$910 SGD