Any gemstone that is not a diamond, ruby, sapphire or emerald is
considered a semiprecious stone. This is not to say these gems are less
valuable or desirable than precious stones, but in most cases, they are
considered “semi” precious simply because they are more abundant. In
fact, this terminology was started in the West for marketing purposes
and is no longer in favor—now it is more common to refer to semiprecious
and precious stones as “gemstones.”
What are semi-precious stones?
A semi-precious stone is also known as a gem or gemstone (also a jewel, a
gem, a precious stone), which is a portion of mineral, which, in
refined and cut form, is used to create jewelry or other embellishments.
There are also organic resources or precise rocks that are not minerals
(for example jet or amber) that are also used for jewelry and would
also be considered to be gemstones, as well.
What are gemstones?
A gemstone is a precious or a
semi-precious stone used in jewelry. Gemologists identify gemstones.
They label gems in the arena of gemology using practical language and
their features. A gemologist uses the gemstone’s chemical arrangement to
classify it. For instance, diamonds are made of carbon (C). Many gems
are categorized by a crystal system because they are crystals. Gemstones
are classified into different varieties, species, and groups. They are
also characterized in terms of dispersion, hardness, specific gravity,
refractive index, luster, fracture, and cleavage. Flaws in a stone are
known as inclusions.
The name itself is derived from the Greek word “adamus,” which means “invincible.”
Diamonds are typically colorless, but yellow, brown, green, gray, black, pink, blue, red, and purple stones can also be found along the diamond color spectrum. Jewelry-grade diamonds are rated based on color from bluish-white to yellow, and on clarity, which ranges from pure to various levels of flawed.
2. Emerald - is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale.Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. It is a cyclosilicate.
Emerald opens and nurtures the heart and the Heart Chakra. Its soothing energy provides healing to all levels of the being, bringing freshness and vitality to the spirit. A stone of inspiration and infinite patience, it embodies unity, compassion and unconditional love. Emerald promotes friendship, balance between partners, and is particularly known for providing domestic bliss, contentment and loyalty. It was dedicated in the ancient world to the goddess Venus for its ability to insure security in love
3. Ruby - The ruby is a pink to deep red precious gemstone. The name comes from the Latin word for red, ruber.
Rubies are said to attract good luck for the wearer. Ancient Hindus believed rubies were a sign of protection from evil. Today, the ruby has come to symbolize love and passion. Rubies were also highly prized by ancient Chinese warriors who were known to wear rubies on their armor. Most rubies today are mined in Africa and Southeast Asia. The largest mined ruby weighing in at four pounds, the Liberty Bell Ruby, was stolen in a heist in 2011. The ruby is the birthstone for July. See our photo gallery of ruby jewelry.
4. Sapphire - Sapphires come in a variety of colors, but are mostly associated with blue hues. A sapphire of another color, like pink, white or yellow, is generally called a fancy sapphire.
The blue sapphire represents peace and serenity. It is seen many times in ancient religious writing to symbolize purity, wisdom, loyalty and faith. Sapphires are mined throughout Africa and Asia, but can be found in Australia and the U.S. The sapphire is the birthstone for September. See our photo gallery of sapphire jewelry.
All precious gemstone that listed above are available in Aaditya Jewellery 
