16-Inch Gemstones

Ethiopian Opal was first discovered in Ethiopia in 1994, with additional major finds in 2008 and 2013. Beautiful specimens of Precious Opal, Fire O...

Turquoise is an ancient gemstone, one of the first known to man. Known to Egyptian and Aztec cultures thousands of years ago, Turquoise is now mine...

Amethyst is a beautiful purple stone, known as a “Gem of Fire” by ancient cultures. It has been greatly sought after throughout history and was at ...

Ruby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple...

Brazilian Amazonite is an opaque blue to green to light green stone, often occurring with inclusions of white, yellow or gray and occasionally tran...

Rhodochrosite is a bubblegum pink to rose red stone, with occasional inclusions of creamy white and dark grey. A manganese carbonate material of th...

Kyanite often occurs as long, bladed, striated crystals, transparent or translucent with a pearly luster. An aluminum silicate mineral, it may appe...

Moonstone naturally occurs in a broad spectrum of colors, but is most commonly associated with white, gray and peach. Its soft chatoyancy is remini...

Unakite is a granite composed of pink Feldspar and Epidote, creating a beautiful blend of pink and green in mottled patterns. The colors in this st...

Kyanite often occurs as long, bladed, striated crystals, transparent or translucent with a pearly luster. An aluminum silicate mineral, it may appe...

Dakota Stones’ Sleeping Beauty Turquoise is from the Sleeping Beauty mine in Globe, Arizona — famous for the outstanding robin’s egg blue color and...

Herkimer Quartz, also known as Herkimer Diamond, is transparent quartz crystal with brilliant sparkle. The crystal naturally forms with 18 facets, ...

Carnelian is a glassy, translucent stone that can appear with such bright orange hues that the ancient Egyptians called it “the setting sun.” Most ...

Prehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South...

Prehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South...

Ruby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple...

Crystal Quartz is a naturally occurring clear and colorless Quartz. It is a crystalline form of Quartz said to have many divine properties includin...

Pyrite, an iron sulfide, is characterized by its metallic luster and brass to yellow hue that have earned it the nickname “fool’s gold.” Pyrite is ...

Crystal Quartz is a naturally occurring clear and colorless Quartz. It is a crystalline form of Quartz said to have many divine properties includin...

Crystal Quartz is a naturally occurring clear and colorless Quartz. It is a crystalline form of Quartz said to have many divine properties includin...

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

Green Lodalite is Quartz with inclusions of sand. These inclusions range broadly in type and color and produce patterns that can look like gardens....

Moonstone naturally occurs in a broad spectrum of colors, but is most commonly associated with white, gray and peach. It's soft chatoyancy is remin...

Blue Peruvian Opal naturally occurs with swirling patterns of deep blues, blue to greens and greens swirled with yellow to green, rust, brown and o...