Large Inclusion Amber Gem This is a rare gem with a 40 million year insect inclusion in it.It is so hard to explain how wonderful and special this piece really is. Height; 100mm Width; 38mm Depth: 23mm Weight : 44.8g. Amber can include lines and spots, specks, coloration and inclusions, included as the resin flowed from the tree 40 million years ago. These quirks are to be appreciated as natural phenomena, not seen as faults. These gems have been heat treated to increase the clarity and make less brittle. Amber is totally unlike mineral crystals in feel and appearance.