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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG766659411

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

Certificate IGI LG766659411

Diamond specifications and retailer prices

From $284 USD
As of October 29, 2026
Save $530 USD (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $814 USD at MOH London · As of October 29, 2026
View at MOH London

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 standard cut grade and certified by IGI LG766659411 or 766659411. Listed at 8 retailers as of October 29, 2026, with prices from $284 to $814, a $530 spread on the same certified stone. MOH London lists it at $814. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.9°
Pavilion angle44.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766659411
Dimensions5.57 × 5.50 × 4.04 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.57 mm5.50 mm1.00 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG766659411
Side View
Table 63.0%Crown 31.9°Girdle: MED-THKPavilion 44.9°Culet: NoneDepth 73.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $814 USD|Low: $279 USD|High: $820 USD|Avg: $426 USD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 8$284 USD
Retailer 2$296 USD
Retailer 3$305 USD
Retailer 6$324 USD
Retailer 4$329 USD
Retailer 7$490 USD
Retailer 5$613 USD
MOH London$814 USD

30 data points across 8 retailers

8 retailers$284 USD to $814 USD

B+
Cheapest Retailer
-
$284 USD
B+
Retailer 2
-
$296 USD
£233 GBP
View
B+
Retailer 3
-
$305 USD
€290 EUR
View
B+
Retailer 4
-
$324 USD
View
B+
Retailer 5
-
$329 USD
£259 GBP
View
Retailer 6
-
$490 USD
View
Price last confirmed 30 days ago
B
Retailer 7
-
$613 USD
View
Most Expensive
B
MOH London
LG766659411 · Oct 29
$814 USD
£641 GBP
View
7 more retailers have this diamond
Prices start from $284 USDSave up to $530 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.

B+
1.00ct Cushion
$284 USD