At 85 degrees F they only lose about 5 percent per year, but at 100 degrees they lose 25 percent per year. So if you live in a very hot climate or are storing your batteries in a very hot location, it may be worthwhile for you to store your alkaline batteries in a refrigerator instead.
What is a Diamond? A diamond is a crystal which is composed of the element, carbon. In nature, diamond crystals display a crystal habit, but often the crystal shape has been rounded or abraided during emplacement. Diamonds typically occur in a rock called Kimberlite and in related cousins (Lamproite).
The shape refers to the appearance of the stone, and the cut to the diamond's ability to reflect light. Most diamond shapes are round, square (cushion), rectangular (princess, Asscher, emerald, radiant), heart-shaped, pear-shaped, oval, or marquise (like a pear but pointed on both ends). The easiest way to distinguish the two is with pictures. The picture below shows the ten most common diamond shapes.