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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG644488847

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG644488847

Diamond specifications and retailer prices

From $260 USD
As of October 28, 2026
Save $1,658 USD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,918 USD at Queensmith · As of October 27, 2026
View at Queensmith

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 LG644488847 or 644488847. Listed at 21 retailers as of October 27, 2026, with prices from $260 to $1,918, a $1,658 spread on the same certified stone. Queensmith lists it at $1,918. 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
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644488847
Dimensions5.57 × 5.57 × 3.50 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
5.57 mm5.57 mm1.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644488847
Side View
Table 57.0%Crown 31.6°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 62.8%

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 28
Current: $546 USD|Low: $260 USD|High: $1,710 USD|Avg: $742 USD|-7.7%
Retailer 1
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Retailer 19
October 30, 2026
Retailer 7$260 USD
Retailer 19$289 USD
Retailer 17$320 USD
Retailer 3$398 USD
Retailer 12$485 USD
Retailer 15$497 USD
Retailer 2$524 USD
Retailer 1$546 USD
Retailer 5$651 USD
Retailer 14$701 USD
Retailer 16$705 USD
Retailer 18$729 USD
Retailer 8$780 USD
Retailer 6$982 USD
Retailer 9$1,003 USD
Retailer 11$1,065 USD
Retailer 13$1,165 USD
Retailer 4$1,299 USD
Retailer 10$1,710 USD

40 data points across 19 retailers

21 retailers$260 USD to $1,918 USD

A
Cheapest Retailer
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$260 USD
Final sale: no returns
A
Retailer 2
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$289 USD
View
A
Retailer 3
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$320 USD
HK$2,500 HKD
View
A
Retailer 4
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$398 USD
View
A
Retailer 5
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$485 USD
€462 EUR
View
A
Retailer 6
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$497 USD
ZAR 8,023 ZAR
View
A
Retailer 7
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$524 USD
View
A
Retailer 8
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$546 USD
£430 GBP
View
A
Retailer 9
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$596 USD
View
A
Retailer 10
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$651 USD
View
A
Retailer 11
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$701 USD
A$1,078 AUD
View
A
Retailer 12
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$705 USD
A$1,085 AUD
View
A
Retailer 13
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$729 USD
View
A
Retailer 14
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$780 USD
SGD 1,054 SGD
View
B+
Retailer 15
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$982 USD
View
B+
Retailer 16
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$1,003 USD
View
Retailer 17
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$1,065 USD
A$1,639 AUD
View
Price last confirmed 24 days ago
B+
Retailer 18
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$1,165 USD
£917 GBP
View
B+
Retailer 19
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$1,299 USD
View
B
Retailer 20
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$1,710 USD
View
Most Expensive
B
Queensmith
LG644488847 · Oct 27
$1,918 USD
£1,510 GBP
View
20 more retailers have this diamond
Prices start from $260 USDSave up to $1,658 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
1.09ct Cushion
$260 USD