Our Diamonds & Gems

We use only the highest quality rustic diamonds and gems which are carefully sourced and individually selected by the designers.


We love to use unique, natural, rustic diamonds and gemstones in our natural stone designs. The beautiful and unusual look of our gems comes from naturally occurring colors and inclusions. These inclusions are largely internal although there are occasionally small inclusions or rough spots on the surface. This is par for the course with rustic gems and we never use a gem that we feel is not up to our standards of beauty and quality. We examine every diamond and gemstone under magnification to ensure that there are no threats to the structure or integrity of the gem.

Each of our rustic diamonds and gemstones are truly one of a kind because of these unique characteristics. Like a fingerprint, a snowflake or the one you love, they can never be duplicated, making them wonderful choices for meaningful engagement rings and gifts for the most special person in your life.


It is important at C/M that our only hand is in harnessing earth’s natural beauty by providing our precious stones with the foundation and environment that best supports them. We believe our high quality diamonds need no alteration, which is precisely the reason we leave them as they are. Each diamond is hand selected for quality, strength and it’s unique visual characteristics. Rustic diamonds are not yet completely appreciated in the jewelry making industry and at one time they were even seen as unusable. They are considered “rough” or “rustic” because they lack the clarity and visual consistency of the popular white diamond. It is common practice that many diamonds are treated by way of heat treatment, irradiation or lasers that erase or fill in natural inclusions in order to give them the appearance of natural clarity. This has been the desire and the practice of the industry for some time. However, all C/M rustic diamonds are completely untreated. With our rustic diamonds, each is naturally one of a kind. It is because of this nature, that they are unable to be duplicated by man. This is a double-edged sword, as it also makes it difficult to measure them on a typical white diamond scale. We understand that many are unfamiliar to our diamonds, which is why we put our trust only in open-minded experts of the industry that are willing to move with the changing tide that is this new classic.



Sourcing rough sapphires directly from the miners in Montana, we hand select each gem in their rough form and cut them by hand in an organic and sculptural style. With stunning color combinations that you won't find anywhere else and extraordinary light refraction, these gems have brilliant flash and fire.

Unlike other gemstones, sapphire colors are unique to their place of origin. Montana sapphires, named after the only place they are found, have hues of colors and color combinations that you won't find in sapphires from other parts of the world. Montana sapphires are one of the few precious gemstones from the U.S. and are one of the most ethical choices of natural gemstones on the planet.


Most of our designs revolve around rose-cut diamonds. Rose-cuts are flat on the bottom (as opposed to the traditional, modern diamond cut which has a pointed bottom called the culet) and are faceted on the top. Rose-cuts have a long and rich history in the art of jewelry, being a precursor to our modern cuts. They afford a low-profile setting, are uniquely cut to make the most of the diamond, and pay tribute to its natural form. Each of our diamonds are cut by hand.



Committed to reducing the impact of gold-mining practices on our planet, we use recycled or fair-mined gold for all of our designs. Our diamond and gemstone jewelry is all set in rose, yellow, or white gold.



With so much conflict in the diamond/gemstone industry, we find it’s best to not involve ourselves with questionable material sources. Our suppliers are all licensed and certified by the Kimberley Process; a joint governments, civil society and industry initiative set in place to stop the flow of conflict diamonds. They are required to abide by rigid expectations in order to maintain their “conflict free” status.

You can read more about the Kimberley Process here:



For information about gem and jewelry care go here

Please contact us with any questions or concerns regarding rustic gems.