Cushion|Lab Grown|IGI

1.00ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG825630717

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG825630717

Diamond specifications and retailer prices

From $542 USD
As of October 30, 2026
Save $1,298 USD (71%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,840 USD at Brilliant Earth · As of October 29, 2026
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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825630717 or 825630717. Listed at 10 retailers as of October 29, 2026, with prices from $542 to $1,840, a $1,298 spread on the same certified stone. Brilliant Earth lists it at $1,840. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825630717
Dimensions5.89 × 5.85 × 3.78 mm
L/W Ratio1.01
Girdle conditionFaceted
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
5.89 mm5.85 mm1.00 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825630717
Side View
Table 62.0%Crown 33.7°Girdle: MED-THKPavilion 38.6°Culet: NoneDepth 64.6%

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: $1,840 USD|Low: $521 USD|High: $1,860 USD|Avg: $936 USD|-1.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$542 USD
Retailer 6$573 USD
Retailer 4$604 USD
Retailer 3$621 USD
Retailer 10$972 USD
Retailer 2$1,066 USD
Retailer 9$1,144 USD
Retailer 7$1,250 USD
Retailer 5$1,304 USD
Brilliant Earth$1,840 USD

42 data points across 10 retailers

10 retailers$542 USD to $1,840 USD

A
Cheapest Retailer
-
$542 USD
A
Retailer 2
-
$573 USD
View
A
Retailer 3
-
$604 USD
€575 EUR
View
A
Retailer 4
-
$621 USD
£489 GBP
View
Retailer 5
-
$972 USD
A$1,496 AUD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$1,066 USD
View
B+
Retailer 7
-
$1,144 USD
View
Retailer 8
-
$1,250 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$1,304 USD
£1,027 GBP
View
Most Expensive
B
Brilliant Earth
21214347A · Oct 29
$1,840 USD
View
9 more retailers have this diamond
Prices start from $542 USDSave up to $1,298 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
1.00ct Cushion
$542 USD