'Korite ammolite' is the brand name applied by Korite International, an Alberta-based company, to the ammolite gem material it mines and markets from the Bearpaw Formation of southern Alberta. Ammolite itself is a recognised gemstone, defined as the iridescent aragonite (sometimes calcite) shell of fossil ammonites of the genera Placenticeras and (less commonly) Hoploscaphites, recovered principally from the Bearpaw shales of Late Cretaceous age. It was given official organic-gemstone status by the World Jewellery Confederation (CIBJO) in 1981 and is one of only three biogenic gem materials (alongside pearl and amber) to be granted that designation in the modern era.

The Korite operation

Korite International was founded in 1979 and has been the largest commercial producer of ammolite for most of the intervening period. The company operates open-pit mining operations along the St Mary River in southern Alberta, principally in the area south of Lethbridge, where the Bearpaw shale outcrops or is overburden-shallow. The operation has historically worked under arrangements with the Kainai (Blood) Nation, on whose treaty lands much of the ammolite-bearing terrain lies, and a portion of production is handled in partnership with the First Nation. Mining is overburden stripping followed by careful hand-recovery of fossil ammonite specimens, which are then stabilised, sliced, and assembled into the various commercial forms.

Material and its forms

The iridescence of ammolite arises from light interference within stacked thin layers of aragonite in the original shell, a structural-colour mechanism analogous to that of pearl nacre and certain opal. The colour palette ranges across the visible spectrum, with red, green and gold being most common; blue and violet are rarer and command higher prices. The shell layer itself is typically thin and fragile and is almost always supplied to the market in one of three structural forms: as a solid (a one-layer piece, the rarest and most valuable), as a doublet (the iridescent layer backed by a stabiliser), or as a triplet (iridescent layer between a backing and a clear cap, often synthetic spinel or quartz). Korite markets all three forms with grading and disclosure consistent with CIBJO and trade norms.

Cultural and ecological context

For the Kainai Nation, ammolite is known as iniskim, 'buffalo stone', and has a place in traditional culture predating its modern commercial development. The Kainai role in modern ammolite mining and the company's stated obligations under treaty arrangements have been a feature of the operation's public profile and have shaped industry standards for indigenous engagement in Canadian gem-material extraction. Ecologically the operation is constrained by the Late Cretaceous depositional context: the Bearpaw shale is a finite resource, exposed in a defined geographic strip, and there is a conscious management discussion within the industry about long-term yield.

Position in the market

Within the global gem market ammolite is a small but distinctive category, appealing to buyers seeking a Canadian-origin organic gem, an iridescent alternative to opal, or a piece with the cultural narrative of an ammonite fossil between sixty-five and seventy million years old. Korite's branding strategy has emphasised the geological and cultural story alongside the visual appeal of the gem, and the company has positioned its higher-grade material at price points comparable to fine boulder opal. The grading standards used in trade are essentially the same as those for opal: brightness, colour range, pattern, directionality and stability.