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| Resin from a lemon eucalyptus tree. Very hard - not sticky. I think when this becomes fossilized it's what amber is made from - resin. Not necessarily this tree, but a resin nonetheless. Had to study up on xylem and phloem to explain the difference between sap (mostly water and carbs for the plant) and resin (sticky substance). | 2/10/10 7:22 AM | Order  |
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