Dark Viviane crystals on Limonite matrix from Chernomorsky Mine, Kerchenskoe Deposit, Kerch Peninsula, Crimea, Ukraine.
The size is 30 x 52 x 34 mm, and the weight is 29 grams.
If you put very strong light to the crystals you will see that they are dark green. On the pictures I have used extra strong light to expose its color. The last picture is in normal indoor daylight.