The Science of Deduction

After dinner, we retired to Peridot’s study. The amber glow of the desk lamp caught the dust motes dancing above stacks of bound journals and mineral specimens. He poured two glasses of Bordeaux, handed me one, and took his seat across from the hearth.

He didn't bring up Mumbai immediately. He simply swirled his wine, letting the quiet do the work.

“You were rushing this yesterday with Mr. Kaniyar, Adamas,” he said softly, looking at me over the rim of his glass.

I felt the heat rise to my collar. “I thought the stone was unmistakable. The vitreous (glass-like) luster, natural inclusions, and the deep cornflower hue—it had all the hallmarks.”

“Color,” Peridot said with a wry smile, “is the most deceitful witness in the lab. It seduces the eye and flatters the ego. You saw what you hoped to see.”

He took a slow sip, letting the lesson breathe.

“Outside our circle, people often dismiss gemology as an aesthetic trade—an upscale parlor trick where we squint through a brass tube and guess. They think it’s intuition. It isn’t.

It is crystallography, chemistry, and solid physics. Refractive index doesn't lie. A spectroscope doesn't care about personal impressions. When you examine a stone, you are conducting a forensic investigation into millions of years of subterranean heat and pressure.”

“Which requires deduction,” I conceded, leaning forward.

“Rigorous deduction,” Peridot corrected gently. “Not romantic guesswork. Deduction is the systematic elimination of the impossible until only the truth remains. But you cannot eliminate the impossible if your mind is cluttered with assumptions. A skilled analyst must be ruthlessly selective about what he allows into his reasoning. You noticed the color and skipped the optical axis. You saw the silk but forgot to verify the weight against the stones’ measurements.

He set his glass down on the mahogany table with a soft, decisive click.

“If you hear hooves outside on the cobblestones, Adamas, assume a horse before a zebra. But if you glance out the window and see stripes, you had better discard your assumption immediately, no matter how much you wanted to see a mare.”

I looked down at my glass, the pieces of Mumbai finally falling into their proper, humbling places.

“So what you’re telling me,” I said, looking up, “is that I’ve only just begun my real education.”

Peridot’s eyes twinkled with quiet amusement. “Only if you have the stomach to unlearn your instincts, my friend.

The wine is poured. 

Let’s look at Kaniyar’s parcel again—from the beginning.”

. . . to be continued.