Colored Gemstones

When choosing gemstones for your jewelry project, in addition to color, it is helpful to consider the gem's Mohs rating. The Mohs scale of mineral hardness is used to determine a stone's hardness and scratch resistance. This scale ranks stones from a 1 - 10, with diamonds considered the hardest on the scale at a 10 and softer stones like opals considered a 5.5 - 6.5. At Takayas Custom Jewelry, we are happy to offer an assortment of precious and semi-precious stone options. Below each stone's description are the color varieties it is available in.


Like emeralds, aquamarines are a variety of beryl with a Mohs' hardness rating of 7.5 - 8. They are best known for their light, icy blue color.


The most precious form of quartz, amethysts are a great choice for purple gems. Amethysts rate a 7 on the Mohs' scale.


A warmer counterpart to amethyst, citrine is also a variety of quartz that rates a 7 on the Mohs hardness scale. Citrines are known for their golden yellow color.


Garnets are a red gem, known for their very deep scarlet color. They have a Mohs' hardness rating of 6.5 - 7.5.


Onyx is a rich, black colored variety of quartz. While most faceted black gemstones are black diamonds, onyx is a popular choice for rounded, cabochon jewelry. Onxy has a Mohs' hardness rating of 7.


Peridots are a popular choice for people who want more of a fresh, yellow-green stone, as opposed to the deep pine color of emeralds. Peridots have a Mohs' hardness rating of 6.5 - 7.


Like sapphires, topazes come in an ample variety of colors including white and pink, but the most well-known topaz color is a vibrant, medium blue. Topazes have a Mohs' hardness rating of 8 making them a durable, affordable colored gem choice.


Tourmaline: Tourmalines are a great gem for people who want to use pink or green stones in their jewelry piece. Tourmalines have a Mohs’ hardness rating of 7 to 7.5.