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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG851605828

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG851605828

Diamond specifications and retailer prices

From €190 EUR
$212 USD
As of October 30, 2026
Save €311 EUR (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €501 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 top-tier cut grade and certified by IGI LG851605828 or 851605828. Listed at 4 retailers as of October 30, 2026, with prices from €190 to €501, a €311 spread on the same certified stone. Taylor and Hart lists it at €501. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851605828
Dimensions7.05 × 5.15 × 3.41 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.05 mm5.15 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851605828
Side View
Table 69.0%Crown 34.6°Girdle: MED-THKPavilion 37°Culet: NoneDepth 66.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €250 EUR|Low: €190 EUR|High: €501 EUR|Avg: €272 EUR
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
October 31, 2026
Retailer 3€190 EUR
Retailer 2€231 EUR
Retailer 1€250 EUR
Taylor and Hart€501 EUR

2 data points across 4 retailers

4 retailers€190 EUR to €501 EUR

B+
Cheapest Retailer
-
€190 EUR
$212 USD
A
Retailer 2
-
€231 EUR
£203 GBP
View
A
Retailer 3
-
€250 EUR
$279 USD
View
Most Expensive
B
Taylor and Hart
XGFZ2PI · Oct 31
€501 EUR
$560 USD
View
3 more retailers have this diamond
Prices start from €190 EURSave up to €311 EUR

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
€190 EUR