Is Zhang Hui's inkstone valuable for collection?

Yes Is Zhang Hui's inkstone valuable for collection? Zhang Hui is a member of China Calligraphers Association and China Hard Pen Calligraphers Association. Researcher of China Senior Calligraphy and Painting Research Association, Chief Honorary Professor of China Calligraphy Artists Art Creation Center; Honorary President of International Xizhi Painting and Calligraphy Institute. Zhang Hui, pen name Moshi, font name Yiyuanzhai, loved calligraphy since childhood. When I was a teenager, I began to learn Liu Zhao tern, and my calligraphy style was regular script, official script, cursive script and seal script.