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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG598377011

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG598377011

Diamond specifications and retailer prices

From $407 SGD
$318 USD
As of October 30, 2026
Save $2,137 SGD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,544 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG598377011 or 598377011. Listed at 17 retailers as of October 29, 2026, with prices from $407 to $2,544, a $2,137 spread on the same certified stone. Brilliant Earth lists it at $2,544. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598377011
Dimensions5.43 × 5.43 × 3.76 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
5.43 mm5.43 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598377011
Side View
Table 62.0%Crown 33.8°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 69.2%

Caratlytics Score

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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: $2,544 SGD|Low: $407 SGD|High: $2,634 SGD|Avg: $1,019 SGD|-3.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 5$407 SGD
Retailer 4$451 SGD
Retailer 7$478 SGD
Retailer 3$607 SGD
Retailer 6$652 SGD
Retailer 11$775 SGD
Retailer 2$796 SGD
Retailer 8$808 SGD
Retailer 10$1,097 SGD
Retailer 13$1,121 SGD
Retailer 12$1,753 SGD
Retailer 9$1,817 SGD
Brilliant Earth$2,544 SGD

43 data points across 13 retailers

17 retailers$407 SGD to $2,544 SGD

A
Cheapest Retailer
-
$407 SGD
$318 USD
Final sale: no returns
A
Retailer 2
-
$451 SGD
$353 USD
View
A
Retailer 3
-
$478 SGD
£294 GBP
View
A
Retailer 4
-
$607 SGD
$475 USD
View
A
Retailer 5
-
$652 SGD
$510 USD
View
A
Retailer 6
-
$775 SGD
ZAR 9,788 ZAR
View
A
Retailer 7
-
$796 SGD
£490 GBP
View
A
Retailer 8
-
$808 SGD
€602 EUR
View
A
Retailer 9
-
$855 SGD
$669 USD
View
A
Retailer 10
-
$1,097 SGD
A$1,320 AUD
View
B+
Retailer 11
-
$1,121 SGD
$877 USD
View
B+
Retailer 12
-
$1,514 SGD
$1,184 USD
View
B+
Retailer 13
-
$1,753 SGD
£1,080 GBP
View
B+
Retailer 14
-
$1,817 SGD
£1,119 GBP
View
B
Retailer 15
-
$1,870 SGD
$1,463 USD
View
Retailer 16
-
$2,250 SGD
$1,760 USD
View
Price last confirmed 23 days ago
Most Expensive
B
Brilliant Earth
21311968A · Oct 29
$2,544 SGD
$1,990 USD
View
16 more retailers have this diamond
Prices start from $407 SGDSave up to $2,137 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
1.09ct Cushion
$407 SGD