Diamonds, the birthstone of April, are the most treasured gems in the world. It is often affiliated with purity and symbolizes romance, allure and sensuality. It adds trust and emotional confidence to a relationship and enables you to withstand hardship. It is desired for its exquisite and timeless look. Diamonds are the hardest natural carbons and are usually colorless. Wearers of this gem are kind, loving and affectionate.