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GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
- Sunstone Stone
Sunstone is a member of the feldspar group. Both the...
- Birthstones
Birthstones are a fun, popular and colorful introduction to...
- Amethyst
The essence of the color purple, amethyst is beautiful...
- Turquoise Stone
Turquoise Stone - GIA Gem Encyclopedia | Complete List Of...
- Peridot Stone
Peridot Stone - GIA Gem Encyclopedia | Complete List Of...
- Alexandrite
Alexandrite - GIA Gem Encyclopedia | Complete List Of...
- Ruby
Ruby - GIA Gem Encyclopedia | Complete List Of Gemstones
- Sunstone Stone
- 11 Popular Different Types of Gems Listed
- 15 Types of Rare Gemstones
- Gemstones from Outer Space
- The Art of Cutting and Polishing Gemstones
1. Diamonds
With their unrivaled strength and brilliance, diamonds have become a universal emblem of undying devotion and the most preferred gemstone used in wedding rings. When it comes to diamonds, the term “admas” originated from the Greek word “admas,” which means something indestructible or indomitable. The majority of diamonds commercially available are white diamonds, which are coveted for their colorlessness. Fancy-colored diamonds are difficult to find and exceedingly precious. If you are lookin...
2. Emeralds
Emeralds, the springtime birthstone, represents rebirth. Cleopatra, the ancient Egyptian monarch was well-known for her preference for these gloriously bright green gemstones, which legends claimed she adored. Emeralds are a form of beryl and belong to the same mineral category as aquamarine. Their bright green color range extends from green to greenish-blue, and they are prized for their rarity and beauty. In analyzing emeralds, color is the absolute most significant factor to consider; the...
3. Ruby
Rubies have been called the most valuable gemstone for thousands of years. A kind of corundum mineral species, rubies are the most valuable colored gemstones in the gem market, commanding the top price per carat of various colored gemstones. Rubies come in various colors ranging from red to orange-red to purplish-red in hue. Heat treatment of rubies is commonly used to enhance the color of the gem and increase the gem’s clarity. When illuminated by incandescent light, they take on a deeper re...
1. Tanzanite
Tanzanite’s rich violet-blue colors are comparable to excellent sapphire, but it costs a tenth of the price — and it is a considerably rarer gemstone. This form of zoisite, which is found only in a tiny area of Tanzania, has risen to prominence despite its limited distribution. In the years following its identification in 1967, it experienced rapid growth in prominence, thanks in part to advertising initiatives by Tiffany & Co. This stone has considerable pleochroism, (defined as a change in...
2. Burma Ruby
The world’s rubies are all unique; however, those from Myanmar are among the best in terms of color and clarity. Unfortunately, they are also quite challenging to come by. In contrast, the geological circumstances in Thailand generate rubies with a significant iron concentration that might result in dark reds with brown or purple notes, the physical properties in Myanmar yield rubies with next to no residual iron that is usually bright red in color. These gems frequently exhibit more intense...
3. Jadeite
Jadeite, which is best known for its electric shade of green in royal jade, may actually be found in a variety of colors, including purple, golden, red, azure, charcoal, and colorless. This stone is highly esteemed in the Chinese, Mayan, and Maori civilizations, and it has a long history of folklore associated with it. The value of jadeite is determined by its translucence and consistency, with high-quality materials seeming to be filled with water or to be the consistency of a droplet of tin...
Jewelry and gemstones are a part of our everyday lives as fashion accessories, decorative baubles and signs of affection. The majority of gemstones come from natural geological processes on Earth. There are a limited number of jewels, sometimes known as alien gemstones, whose origins may be traced back to the furthest reaches of the universe. While...
The act of creating gems is referred to as gem cutting or lapidary, and the individual who does the slicing and buffing is referred to as a gem cutter or a lapidary. Generally speaking, raw gemstone material refers to gem materials that have not been substantially chopped and finished. To cob anything, you need to have some rough materials that hav...
What Are the Four Precious Gemstones? This is the considered the most definitive precious stones list: Diamond: Transparent, pure carbon gem in any color. Ruby: Transparent red corundum. Sapphire: Transparent non-red corundum, traditionally blue. Emerald: Transparent to translucent green beryl
Jan 21, 2024 · Discover the meanings behind different types of precious stones like diamonds, emeralds, and sapphires. Uncover the symbolism and spiritual properties of these gemstones
- Garnet. Garnet is available in many different colors and is usually associated with the color red. This January birthstone is available in red, green, orange, pink, and purple hues.
- Agate. Agate is a form of quartz, and it has extremely unique patterns of colors. It is used as a semiprecious stone because of its quality and color. Agate is a translucent variety of quartz that forms by the deposition of silica from groundwater in the sunken areas of igneous rocks.
- Amethyst. “The February birthstone is crystalline quartz and ranges from pale lilac to deep reddish purple in color. Often paired with gold or silver, this gemstone is durable with a high hardness of 7 on the Mohs scale.
- Aquamarine. The name alone speaks to the color of the gemstone. This sea blue gem is a member of the beryl family and rates 7.5 on the Mohs scale, meaning that it is a durable gemstone for jewelry.
Nov 12, 2020 · Some popular semi-precious types include tanzanite, opal, aquamarine, morganite, amethyst, London blue topaz, swiss blue topaz, moonstone, garnet, peridot, onyx, tourmaline, rose quartz, citrine, and many more. Some semi-precious gemstones can fetch substantially higher prices than precious stones because of their cut, place of origin, or rarity.
A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments.
