Vintage ring

The ring in the image is a 925 sterling silver ring with a yellow sapphire center stone surrounded by smaller clear crystals. "925" indicates that the ring is made of 92.5% pure silver.
Here's what can be gathered about the ring and yellow sapphires in general:
Material:
The ring is made of 925 sterling silver, a common material for jewelry, known for its durability and shine.
Gemstone:
The center stone is a yellow sapphire, a variety of the mineral corundum. Yellow sapphires range in color from greenish-yellow to orangish-yellow, with the preferred color being a vibrant canary yellow.
Value:
The price of yellow sapphires can vary, with faceted stones under 2 carats ranging from $50 to $750 per carat, and stones over 2 carats ranging from $375 to $1625 per carat. Several factors influence the price, including color, clarity, and size.
Symbolism:
Yellow sapphires are associated with wisdom, wealth, and success. They are also believed to bring prosperity and good luck to the wearer.