Herkimer Diamonds sometimes form in 'clusters', which consist or two or more crystals formed together. They are extremely delicate and more often than not, they are found 'popped' apart at the point of contact. The pieces fit together like a puzzle into the most spectacular formations. Most clusters you see are, in fact, reconstructed. Please see our Herkimer Diamond FAQs page for an explanation of reconstruction. Meanwhile, assume all of our clusters offered have been painstakingly reconstructed unless otherwise noted.