Samarkand — The Merchant's Ledger

Nakhshid had been doing this for twenty-three years.

His fingers moved across the stones before his eyes did. Weight, temperature, the faint irregularities of the surface — all of it arrived in the moment he picked one up, before he had looked at anything. Looking was for confirmation. The judgment had already happened in his hands.

The twelve red stones came from a Khotan trader who said they were from a mine somewhere to the east. He didn't know exactly where. It didn't matter. Nakhshid laid them out one by one on the cloth, left to right, lightest to deepest. Then he picked up the rightmost one, walked to the entrance of the tent, and held it up against the noon light.

The noon light in Samarkand was hard. It came straight down from the Central Asian plateau with nothing to soften it, and it exposed everything: fractures, inclusions, the faint surface bloom that dyed stones left behind. He had seen too much dyed agate — red on the outside, washed out the moment strong light hit it, the colour thinning like ink in water.

This one was different. The light went in and did not come back out. The colour deepened, pressed inward, as though something inside the stone was holding the red down, keeping it from dispersing.

He set the stone back on the cloth and wrote in the ledger: colour: deep persimmon.

The colour of Warring States red agate is not applied. Every trader in this business knows how to verify it: cut the stone — dyed material is white inside, natural material is red through. Soak it — dyed material fades, natural material does not move. But these are tests for after the fact. Real judgment happens in the first moment — the weight in the hand, the way the colour responds to light, the density of the surface. These things cannot be taught. They accumulate in the hands over years of handling enough material.

Persimmon frost is the rarest grade of Warring States red. From a single pit, it might account for a few percent of the yield. The iron concentration has to be high, the distribution even, with no fractures to let other minerals in. A degree off and it goes orange. Another degree and it goes pink. Another and the colour becomes uneven. The trade uses persimmon frost as the benchmark because it has nowhere to hide — you know immediately, standing in front of it, whether it is good.

Nakhshid had seen a great deal of red stone. He knew what these twelve pieces were. He paid forty silver without negotiating.

The buyer was a Persian trader he had dealt with twice before. He couldn't remember the man's name, only that he always wore the same blue outer robe with a patch on the left shoulder. The man put the twelve stones into a leather pouch, paid, said nothing further, and walked west out of the tent.

The sale price column, Nakhshid left blank. It wasn't the first time. Some transactions, the number was better kept out of the ledger. The accounts were for his partners to see. Some figures, he preferred to keep to himself.