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Seed crystal
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<p>A seed crystal is a small piece of <a href="/facts/Single_crystal/UMG5pFp9">single crystal</a> or <a href="/facts/Polycrystal/nXSgR0wp">polycrystal</a> material from which a large <a href="/facts/Crystal/e2R2mk3E">crystal</a> of typically the same material is grown in a laboratory. Used to replicate material, the use of seed crystal to promote growth avoids the otherwise slow randomness of natural crystal growth, and allows manufacture on a scale suitable for industry. </p>