As for the use of colored gems, there is no doubt that Bulgari is really famous for using colored gems. On Bulgari's gem-encrusted ring, you can easily find colored gems's figures such as tourmaline, agate, chalcedony, ruby and sapphire.
Bulgari ring price
Finally, the price you mentioned. It can be said that any brand has four grades: middle, low and high. As far as Bulgari's classic spring ring is concerned, there are thousands of cheap charity money, ordinary money from/kloc-0 to around 30,000 on the market, and high price with dense diamonds. In short, the prices are different, and there are tens of millions of Bulgari's top jewels.
If you want to know the price, go to their cyber war. Every style in every series basically has a price.