Jadeite Glass has been around since the 1920s or 30s and was very popular in the 1930s, 1950s and from 2000-present.  This last bit of popularity was due to Martha Stewart and her love for Jadeite Glass.  It is known as Jadeite, Jade-Ite, Jadite and Green Milk Glass.  All different names but all the same.  This is brand new glassware made in the old style. It is handmade (hand poured into molds) and may have minor mold imperfections/flaws due to the handmade process. This is all perfectly normal for the type of glassware it is and the way it is manufactured. Your product should have no chips and no cracks, but it may have straw marks, minor indentions, extra bumps of glass, etc. It is made in the same way as the old Depression glass so the flaws show up just like in the old, original depression era glassware