"My pearls are real, so they were too quiet to find in the dark," Mrs. Sterling said, handing Elena a small blue velvet box. Inside was a strand that felt cool to the touch and had the slight weight of something grown over years, not molded in minutes.

"A trade," Mrs. Sterling said. "For the ones you broke to save us."

Elena smiled, thinking of the "tooth test" she’d read about. Real pearls are gritty, like fine sandpaper, because they are built layer by layer from an irritant. Fake ones are smooth and glassy. "They’re consistent," Elena replied smoothly.

Later that evening, the lights flickered and died. A transformer had blown three blocks away, plunging the marble hall into pitch blackness. In the scramble for phone flashlights, a frantic cry went up. Mrs. Sterling had tripped, and the silk thread of her $20,000 heirloom had snagged on a stray nail.

Elena didn't panic. She reached up, gave her three-dollar strand a sharp yank, and felt the plastic beads spill into her hand.

Elena stood in the drafty aisle of the "Everything for a Dollar" shop, her fingers hovering over a strand of plastic pearls. They were aggressively white, perfectly spherical, and held together by a flimsy thread that looked like it would snap if she breathed too hard. They cost three dollars. She bought them anyway.

A dozen "real" pearls—heavy, irregular, and priceless—clattered across the floor, vanishing into the shadows.

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