I truly love the tone of this ink. It is subtle but the color stands out
I'm not quite sure what's inside Monteverde's ITF (Ink Treatment Formula) but pretty soon other inks are going to try to copy. It makes what I once considered ****** pens actually write really well. This Particular Sapphire is as far My favorite Ink from a variety of Monteverde Inks I've tried. You can actually see a bit of SHEEN with this color without the drawback that come with Sheening Inks, like easy smearing, taking forever to dry. Monteverde's ITF makes this Sheening Ink well behaved. Highly Recommend.
I preordered all of the inks of Gemstone Ink Collection and I swatched all of them. Sapphire is a great color with purple to red sheen, which is like a shining sapphire.