This uniquely shaped cluster is 6 x 3 x 1.5 inches and has carbon inclusions as well as contact spots from the host rock.  It grew where it could in the space it was given! 
 
Herkimer Diamond Quartz self-dug in 2022. Smoky with carbon inclusions and dolomite matrix material .

Herkimer Quartz “Diamonds” are the high energy seekers of the crystal world. Unusually transparent with a brilliant sparkle, they manifest pure, solid Light and are powerful amplifiers of spiritual energy. As perfect conduits of the universal Life Force, they are exceptional healing crystals, and are used in meditations, dream and vision work, and advanced spiritualization applications.

Herkimer Diamonds are the most powerful of all Quartz crystals. Being doubly terminated, they have the ability to not only transmit their own energies, but to receive spiritual energy and to amplify and focus it intently. They are reported to be harder than all other Quartz, giving them the strength and durability to handle difficult challenges beyond the scope of other Quartz crystals.