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oval montana agate necklace front view
oval montana agate necklace front view
oval montana agate necklace angled view - flatlay with leaves
oval montana agate necklace angled view - flatlay with leaves

Oval Montana Agate Necklace


Elegant rustic chic makes this Montana Agate Necklace a piece that an be worn for all your autumn activities or even year round!  Translucent warm yellow, orange and opaque deep brown flow throughout this oval stone like smoke on the wind.  Radiating marks surrounding the stone’s setting are reminiscent of the sun’s rays as they fall late in the autumn sky.  Branches are beginning to become bare with each wind and colder evening.  A fused* and textured sterling silver twig graces the top of the setting and becomes the method by which this beautiful piece lays upon your neck.


  • Sterling and fine silver
  • Montana Agate
  • 3-1/8” wide by 1-1/2” long from top of branch ends to bottom of stone setting
  • Textured and oxidized 18" sterling silver oval-link cable chain with sterling silver clasp.

*Fusing is a technique where the sterling silver is brought to its melting point to join or attach pieces together without the use of solder.   It is also a wonderful technique that can be used to create a very organic look to a piece of jewelry.

About the gemstone:

Montana Agate, also known as Montana Moss Agate ~ A member of the chalcedony (pronounced kal-SED-ney)  family of minerals, Montana Agate is often clear, but can have translucent white, gray, yellowish or a reddish brown base color.  It is found in the alluvial gravels of the Yellowstone River basin in southeastern Montana.

Chalcedony is a microcrystalline quartz and has a hardness of 7 on the Mohs scale of 1-10.  Quartz in all its forms is the most abundant mineral on earth, making up 12% of the earth’s crust.  The red and orange colors are the result of iron oxide; the blacks and browns are the result of manganese oxides.

Agates in general come in many different forms and are formed in at least five different ways. The main conditions necessary for agate formation, are the presence of silica from devitrified volcanic ash, water from rainfall or ground sources, and manganese, iron and other mineral oxides that form bands and inclusions.

Montana Agate has been the State of Montana’s official state gemstone, along with Montana Sapphire, since 1969.