Of equal weight, gem-quality diamond is more valuable than silver.
Diamonds are generally more valuable than gold or silver, as they are rare and have a high demand for use in jewelry. Gold is typically more valuable than silver due to its rarity and historical significance as a store of value. Silver is commonly used in industrial applications and jewelry, making it less valuable than gold or diamonds.
Diamonds are more valuable than coal.
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By weight, a gem-stone quality diamond is more valuable than oil.
Yes, if it is pure natural sapphire it will be worth more than a diamond.
Both are silver plated, but silver on copper tells you what kind of metal is used as an underlay. Silver plated copper is more valuable than silver on a white metal or zinc underlay.
Based on the mark and purity of the silver it may be. If it's .925, it's much more valuable than silver plate. Of course the age of the IS piece could have a dramatic effect on the price the item will go for.
A diamond is more valuable than a zirconia, given that they are equal weight, cut, clarity and colour.
Gold is more valuable than silver. durr.
uranium
Silver is valuable. As of 04/2009 the raw metal has been selling in the range $12-13 an ounce. If it's in coins or jewelry it may be more valuable as a collector's item.
In silver scrap wise yes 925 is more valuable.don't melt old coins they may be valued a lot more that spot silver. .900 silver is basically 90% pure 925 is 92.5% pure .999 is classed as 24ct in the silver world.but you can get purer silver around .99999.but silver can never be 100% pure it always still has other metals in it no mater how pure.