Yes, the little centerpiece does look like an Agate, but it is actually common Opal. Lace Opal is a very rare form of common Opal. This little beauty is from a silica geothermal stalactite formation, the colors developed as different trace minerals were deposited by the dripping water.
Although I failed to get the name of the Utah mine where this material is found from the Muellers (DiWolf), it is so unusual I thought maybe I could find it and believe I did. In fact, I have a much larger cab which looks almost exactly like the large cab featured in the video of the miners here. My cab almost had to have been cut from the very same stone. The miner discusses the trace elements that produced the different colors if you have an interest, and there is also a brief pan over the rough stalactites.
The bright Sunstones add sparkle and reflect the colors in the centerpiece. The little keshis add movement and luster. This is a delicate piece with loads of personality! I believe you will like it!