"It wasn't my job to deal with that sort of thing, so I didn't need to know it."

Honestly, the tone isn't lost on Lapis, but as far as she's concerned, the organic end of things was never her business, so it makes sense she doesn't know. "What about the lazurite?" Which would undoubtedly be where the blue is coming from in her blood. "Why would the calcite and pyrite be doing that anyway?" Are.. they trying to fuse in her blood stream?

Lapis is not particularly scientific enough for this.