In class writing

After I read about the quote in the front of the book, at first I don't understand what it means. It is really confused that it uses this sentence here. A secret of an opal's color lies not in its subtance but in its absences. Later I start to understand that there is some thing related with the book. As we all know, opal is one of the most rarest gems all around the world. The Willamson's just came to Austria to find opal. In this book opal is in lots of places, there is an huge opal in Dingan's bullybutton, they try to find their opal in their field and so on. Also in this book, the melody is sad. From not the early of the book, Kellyanne was sick becase her father lost Pobby and Dingan, and half of the book they tried to find and finally give them a funeral, even Kellyanne died in the end.  But Kellyanne and her imaginary friend Pobby and Dingan gave a lot of influences to others around them, and then the whole town. They were not that powerful at the first of the book. What they influenced pepple I think is about sadness, how a 8 years old girl cares about her imaginary friend. In the end of the book people of the town said Kellyanne is a brave girl, and her story really make the relationship of the people of whole community so much better. Their beauty of defective attract people to change. Just like opal, people don't think they are attractive because it is perfect, because the unperfect side are storical.