A lot of crystal will be lead crystal (at least in part). Please don't! Especially if it's old crystal.
yes.....yes......yes and the food can be damaging to your health as well.
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Lead crystal will leach a small amount of lead into foods placed in the container. For short durations, such as serving, they are safe. However, lead crystal is unsuitable for long term storage, or for use by pregnant women or small children due to lead poisoning concerns.
No lead crystal is safe to drink/dispense from. All leaded crystal leaches lead into any beverage contained therein. Acidic beverages pull lead from crystal faster than other liquids. Even very small amounts of lead are unsafe for consumption and can cause brain damage.
RY Crystal is Known to be a very fine "Lead Crystal" it is 30% lead which makes it a "Lead crystal" under the European crystal standards. Lead in a crystal means the amount of light it reflects, anything above 28% lead is considered as high quality. RY Crystal is a merging European crystal best known for their dazzaling shine on the Famous RY Crystal Chandeliers.
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The inclusion of at least 24% lead oxide in the composition is required by law for crystal to be called full lead crystal. The lead lends brilliance and weight to the product. Crystal without lead is still crystal, i.e. clear glass, however, it is more commonly perceived as &quotglass". The lead also make the crystal softer and more conducive to cutting. This is why the lead crystal is cut and for the most part, the unleaded crystal is not cut.
If a decanter is lead crystal, there should be a mark on the bottom of the item. You can read more about lead crystal at http://www.wisegeek.com/what-is-lead-crystal.htm.
Crystal glass contain lead.
True lead crystal glassware is rare nowadays because of its possible health risks. Lead-free crystal glass is typically sold nowadays because it does not contain lead oxide.
Lead is in the isometric crystal system.