ChemisTree Christmas Cards, 5"X7" Folded Cards With Envelopes, Great for Chemistry Teachers, STEM Students, Science Lovers, Geeks & Nerds "Oh Chemistree, oh Chemistree, your compounds are so lovely..." This funny chemistry Christmas card is sure to make anyone's holiday merry and bright. This card features a pine tree with a portion of the periodic table of elements printed within it - and the element of gold in place of where the Christmas star would go. Makes a great gift for any science lover! About the Cards; These high-quality paper cards come pre-folded, packed in cello sleeves per 10 cards, and include a white envelope for each card. Works well with regular ballpoint pens after a short drying time. Silk cover finish 5" x 7" folded card Blank inside Includes envelopes Single card - $4.95 per card Pack of 5 - $1.99 per card Pack of 10 - $1.59 per card Pack of 25 - $1.15 per card.