Jet lag symptoms may include: 1  Disturbed sleep â such as insomnia, early waking or excessive sleepiness. 2  Daytime fatigue. 3  Difficulty concentrating or functioning at your usual level.  Stomach problems, constipation or 1  diarrhea. A general feeling of not being well.  Mood changes.
10-karat gold is an alloy made up of 10 parts gold and 14 parts other metals such as copper, zinc, silver or nickel. In percentage terms, 10K gold contains 41.7% pure gold.Jewelry that is 10K gold will usually be stamped with a mark such as 10KT, 10K, 10kt or something similar. If you see a mark reading .417, this also means that the item is 10 karats gold.n percentage terms, 10K gold contains 41.7% pure gold. Jewelry that is 10K gold will usually be stamped with a mark such as 10KT, 10K, 10kt or something similar. If you see a mark reading .417, this also means that the item is 10 karats gold.
Both gold and silver are sold as alloys because their pure forms are too soft for jewelery, so their relative weights could be almost identical. 10 and 14 karat gold which is most typically sold for jewelery is less than half and just over half gold respectively. 24 karat is pure gold. The rest of the alloy in gold jewelery is half silver and half copper. <br />. Sterling Silver is alloyed with around 8% copper to make it tougher.