Final answer:
Phoebe could have possibly bought a jewelry set that includes elements such as gold, diamonds, pearls, silver, and rubies.
Step-by-step explanation:
Phoebe could have possibly bought a jewelry set that includes elements such as gold, diamonds, pearls, silver, and rubies. Gold is a commonly used metal in jewelry making due to its softness and malleability, while diamonds, pearls, silver, and rubies are precious gemstones that are often incorporated into jewelry for their beauty and value. These elements can add variety and enhance the overall aesthetic appeal of the jewelry set.