I grabbed a few very interesting Tourmalated Quartz tumbles for web buyers. Here is another one. These tourmaline needles seem a very dark green. This tourmalated quartz has a few larger tourmaline needles and the quartz is smoky quartz of nice quality
It may or may not fit a hemp necklace depending on the basket size. But this tumble is certainly large enough to hold. It is certainly very interesting for a young collector to enjoy discussing how the crystals grew through each other.
And of course, tourmaline is wonderful for cleaning and protecting the energy of clairsentient people. When it is in quartz it ramps up the energy of the needles and helps are psychic attack which is usually a person under stress through their ill will in your direction.
Know that tourmaline in quartz is also called tourmalinated quartz and tourmalated quartz.