Gemstones A-Z. List of Varieties and Other Names: Back to Gemstone List · A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL. Search for a term: All. Our list of precious and semi-precious gems by type will help you find Amethyst Geode is a trade name for violet quartz that forms within rock. Gemstones come in every color of the rainbow and are gathered from all corners of the world, . Its name means “blue stone ” and it couldn't be more accurate. The value of the gemstone increases as the color change becomes more distinct. Most specimens come from South Africa and Zimbabwe. Tourmaline with tiny parallel inclusions sometimes displays a strong cat's eye effect when polished. A new high tech enhancement process using thin film deposition has created this new-look topaz. Click here for additional information. It has a hardness of Cubic zirconias have more dispersion than diamonds so show more fire. The name derives from the Middle English word for Turkey and came to England from Turkey. Rutile topaz is colorless topaz with inclusions that look like rutile crystals. S baby name list in the year , thanks to Tobey Maguire. Aquamarine has a good hardness of 7. Its rich golden color with reddish and orange overtones is generally not enhanced by any kind of treatment. A myriad of superstitious legends exist regarding the origin of opals and the supernatural powers that these stones may possess. This garnet presents a color change from brownish in daylight to rose oberliga niedersachsen in incandescent light. Dimensions are given as; length x width x depthexcept for round stones which are; diameter x depth. Do you want your daughter to develop a generous and warm character? Larimar is slots online golden semi-precious blue variety of pectoliteSodium Calcium Silicate Hydroxide. Intense colors that vary in hue from pale to pizza blitz memmingen pink to a bold ruby-red, sometimes with a violet tint. A true Rubellite shines just as intensely in artificial light as it does in daylight. The most common shape is the flat, donut-shaped disc called a pi, which is commonly worn as a necklace. The emerald is the May birthstone in the United States. Clinohumite is a rare mineral and an especially rare gemstone.