(n.) Anything done or made with extraordinary skill; a capital performance; a chef-d'oeuvre; a supreme achievement.

archetype art object artifact brainchild bric-a-brac child classic coinage composition concoction creation creature crowning achievement design distillation effect end product essence exemplar extract feat fruit grotesque handiwork ideal invention issue jewel kitsch magnum opus manufacture master master stroke masterstroke masterwork mintage mirror mobile museum piece new mintage nude offspring old master opera opus opuscule origination outcome outgrowth paragon pasticcio pastiche pattern of perfection piece piece de resistance piece of virtu product production prototype quintessence result stabile statue still life study tour de force very model virtu work work of art