Is the glass transparent?

Yes, glass is generally a transparent material. Glass consists mainly of silicon dioxide and other substances that are fused together and cooled quickly to form glass. This process gives the glass its transparent property that allows light to pass through. However, the glass can also be colored depending on what substances have been added to it during the manufacturing process.

In addition to transparency, glass is also a durable and very versatile material that is widely used, for example, in the construction industry, electronics and consumer products.

Sources: Wikipedia