LOVE or HATE the 'Natural Flaw'... In any kind of gemstone, there's always something that won't allow the piece to be called PERFECT'. Have look at these opal loose stones!
As you can clearly see each comes with some clouded areas, dark lines, sand spots and non-colored parts...
But, that doesn't mean they are not beautiful or they are worth nothing. They are just not perfect, just like every human beings. With less flaws, it could usually be more valuable, more popular..... but not as fun or unique!!
Some prefers opal with some kind of special 'CHARACTERS' so that they feel their opal is more memorable. And I do believe opals with a little detail (such as flaws or potch lines or sand spots, etc) can be more interesting to look at!!
What's your personal opinion?