Jeannie treasured an amber necklace given to her by her grandmother. The beads contained fossils of plants and insects that were trapped in resin from pine trees millions of years ago. Her grandfather had found the amber lump on the shore after a shipwreck, and carved the beads as a wedding gift. By reading a book, Jeannie learned that the Scottish Highlands were once covered by the same pine forests, and the sinking of the land underwater preserved the resin as amber deposits on the seafloor.