An Introduction to Kimberlite Diamond Exploration, page-5

These garnets are definitely win-red to lilac purple IMO. I just wonder why the company hasn't come out and verified their prospective geochemistry yet. Confirmation of their G10 status would have helped. Maybe we are just past this stage.

Eshmun

"Garnets of peridotitic origin typically have a distinctive
wine-red to lilac purple colour (Photo 1a, back pocket).
This colouration is imparted to the garnet if its composition
includes greater than 1 to 2 weight % of Cr2O3. Other
mantle-derived garnets, such as those from eclogite and
chromium-poor megacrysts, are typically chromiumpoor
and are various shades of orange to red-orange
(Photo 1b, back pocket). These latter colours are similar to
those associated with crustal garnets. Differentiating garnets
can only be accomplished by determining grain geochemistry."

Garnets of peridotitic origin are typically chromium-rich
pyrope. These garnets may originate from many different
types of peridotite, the most important of which are
harzburgite and lherzolite. Eighty-five percent of chrome
pyrope that occurs as inclusions in diamonds are calciumdepleted
and derived from harzburgite (Gurney 1984)
(Figure 25). These types of garnets have been termed
“G10” (Dawson and Stephens 1975) and are considered
very important kimberlite indicator minerals. The recovery
of G10 garnets from overburden is important since it
suggests that these minerals originated from harzburgite
peridotite, and are more strongly associated with diamond
than are garnets of lherzolitic (G9) origin (Dawson and
Stephens 1975)."