The thickness of the gem portion is another factor in determining value. The price of opal doublets ranges from approximately $24 to $160 per stone, with the price determined by the same factors that govern the value of black and white opals, as described above.
No, if there are multiple cracks then the denture can not be repaired. You have to get the new denture made. The cost of the lower denture will vary between $600 to $800 depending upon the place and the dentist.
Normally, it is depended on how much dentures you need and the type of denture. The cost range is from $6000 to $10000 for at least two dentures. The price might differ from one clinic to another.