The Queen was not buried with her wedding ring.
According to the official statement from Buckingham Palace, the Queen's funeral was a private ceremony for close family members only. The statement did not mention any specific items included in the coffin, but it did mention that the Queen was buried with her wedding band and a simple gold bracelet.
It is common for individuals to be buried with items of personal significance, but the decision to bury the Queen with or without her wedding ring was ultimately a personal one made by her family.
Many people have speculated about the reasons behind this decision. Some believe that the Queen's family wanted to honor her wishes, while others believe that they wanted to preserve a symbol of her marriage for posterity.
Ultimately, the reasons behind the Queen's burial arrangements are private and unknown to the public.