Tuesday, September 8, 2009
Diamonds are for softies
The super-tough gemstones are in danger of losing their crown as the hardest kid on the block.
Diamonds are for softies – boron is harder
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The super-tough gemstones are in danger of losing their crown as the hardest kid on the block.
The super-tough gemstones are in danger of losing their crown as the hardest kid on the block.
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Post a Comment