<https://blackopaldirect.com/product/rough-opal/91-ct-beginners-rough-opal-with-video-tutorials/#product>
<http://schema.org/description>
"Start here if you are new to opal cutting! Along with your rough opal, we will send you a series of video tutorials covering how to set up your equipment, how to get the more our of your parcel and most importantly a series of 4 lessons on how to cut.\r\n\r\nThese videos are exclusive to our customers and are not available anywhere else.\r\n\r\nEach parcel is individual and you will get the exact opals in the images."
<https://blackopaldirect.com/product/rough-opal/91-ct-beginners-rough-opal-with-video-tutorials/>