This is another nice example of an extra-large Howlite cabochon, white in color. (This type of stone is sometimes marketed on eBay as "Turquoise").
This one is cut as an oval. This sample is good for those interested in collecting the many forms of Agate, Jasper, or sometimes other minerals, or for those interested in pendant jewelry. This extra-large sample is a great addition to a collector's inventory.
Although this is a cab, you can also glue on "bails", or have the piece drilled to accept a pinch bail. Either approach will let you turn this sample into a fine pendant.