This specimen contains a big zircon crystal in biotite. The visible part of the crystal is 25mm, but in reality it is bigger as part of it is hidden by the biotite.
It is 76 grams and measures 50 x 50 x 27 mm (height x length x width)
It is a great crystal with a perfect top. Underneath it there is a smaller crystal, and on the backside there is a crystal that has grown into the main crystal. You will also see some minimal damages along the edge of the crystal.
You will see a nice deep red inner color in the a part of the crystal.
Please watch the video to get the best view.
The video can also be seen on https://youtu.be/3AHlICaM3rc
The zircons are yellow SW and LW UV fluorenscence.
Zircons from Seiland are by far the world greatest, because of their deep red color with transparent and gemmy areas. The zircon site has been heavily mined in the 80's and 90's, and nowadays it is extremely difficult to collect decent specimens without spending several days with heavy tools for collecting. It is also at the border to the Seiland National Park, so you would have problems for granting rights to do mining.The specimen for sale is from the the 1990's when it was still easy to find zircons, and before the National Park was established (in 2006).