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Cushion|Lab Grown|IGI

1.23ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG828628306

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

Certificate IGI LG828628306

Diamond specifications and retailer prices

From $214 USD
As of October 31, 2026
Save $1,066 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,280 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828628306 or 828628306. Listed at 15 retailers as of October 31, 2026, with prices from $214 to $1,280, a $1,066 spread on the same certified stone. Brilliant Earth lists it at $1,280. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828628306
Dimensions6.25 × 6.06 × 4.23 mm
L/W Ratio1.03
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
6.25 mm6.06 mm1.23 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828628306
Side View
Table 62.0%Crown 35.9°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 69.8%

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 31
Current: $1,280 USD|Low: $207 USD|High: $1,280 USD|Avg: $583 USD
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
Retailer 14
Retailer 15
November 1, 2026
Retailer 12$214 USD
Retailer 7$239 USD
Retailer 9$297 USD
Retailer 11$396 USD
Retailer 2$410 USD
Retailer 15$415 USD
Retailer 10$429 USD
Retailer 13$447 USD
Retailer 14$559 USD
Retailer 6$584 USD
Retailer 5$645 USD
Retailer 4$817 USD
Retailer 8$1,110 USD
Retailer 3$1,167 USD
Brilliant Earth$1,280 USD

18 data points across 15 retailers

15 retailers$214 USD to $1,280 USD

A
Cheapest Retailer
-
$214 USD
Final sale: no returns
Retailer 2
-
$239 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$297 USD
£234 GBP
View
A
Retailer 4
-
$396 USD
€377 EUR
View
Retailer 5
-
$410 USD
ZAR 6,623 ZAR
View
A
Retailer 6
-
$415 USD
View
A
Retailer 7
-
$429 USD
£338 GBP
View
A
Retailer 8
-
$447 USD
View
B+
Retailer 9
-
$559 USD
View
Retailer 10
-
$584 USD
A$899 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$645 USD
View
B+
Retailer 12
-
$817 USD
View
B
Retailer 13
-
$1,110 USD
£874 GBP
View
B
Retailer 14
-
$1,167 USD
View
Most Expensive
B
Brilliant Earth
22335262A · Oct 31
$1,280 USD
View
14 more retailers have this diamond
Prices start from $214 USDSave up to $1,066 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
1.23ct Cushion
$214 USD