summon villager ~ ~ ~ {Silent: 1b,Invulnerable: 1b,CustomNameVisible: 1b,CanPickUpLoot: 0b,VillagerData:{profession:"minecraft:mason",level:5,type:"minecraft:swamp"},CustomName: "{\"text\":\"Gem Trader\",\"color\":\"aqua\"}",ArmorItems: [{}, {}, {}, {id: "minecraft:player_head",Count: 1b,tag: {SkullOwner: {Id: [I;181193169,1556958344,-1776245278,1756575204],Properties: {textures: [{Value: "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMWYwNTQzMTY1Njc4YzNhMWFmYTdlZmYwZGU3OGIzZGU4MzkyYWZiNWJkMGRmODczMzA2ZDk5N2ZjNTJhM2RhOCJ9fX0="}]}}}}],Attributes: [{Name: generic.knockback_resistance,Base: 1.0}, {Name: generic.movement_speed,Base: 0.0}],Offers:{Recipes:[{rewardExp: 0b,maxUses: 2147483647,buy: {id: "minecraft:diamond",Count: 1b},sell: {id: "minecraft:player_head", Count: 1b, tag:{display:{Name:'{"italic":false,"color":"#7FFFD4","text":"Aquamarine Gem"}'},SkullOwner: {Id:[I;-1447408671,1641234977,-2097543137,-1000218569],Properties: {textures: [{Value: "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMmE5ZTI4ZmFiN2QzZDAxMWJjODRiZjE2ZGFmMmY5NThhOGI4OGIwNmUwZDVlNTBjMjU0NDdiNWRmNGM2MGI3YyJ9fX0="}]}}}}},{rewardExp: 0b,maxUses: 2147483647,buy: {id: "minecraft:diamond",Count: 1b},sell: {id: "minecraft:player_head",Count: 1b,tag: {display:{Name:'{"italic":false,"color":"#FFC87C","text":"Topaz Gem"}'},SkullOwner: {Id:[I;936336905,1647332135,-1666376031,-69753802],Properties: {textures: [{Value: "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZGQzYTI0MmRhM2FkYjE2MzE1Y2UyOWUxOWY3OWNjMjJmMzQwNTEwNTNhYmRhZDU2NjhlYWNhYWMxZWEwYjIyMiJ9fX0="}]}}}}},{rewardExp: 0b,maxUses: 2147483647,buy: {id: "minecraft:diamond",Count: 1b},sell: {id: "minecraft:player_head",Count: 1b,tag: {display:{Name:'{"italic":false,"color":"#9B111E","text":"Ruby Gem"}'},SkullOwner: {Id:[I;884945445,1248151461,-1946307757,1525191378],Properties: {textures: [{Value: "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvODk4NzgwY2RmYzg1NjMwNTQ2MGRjZWM3NDNlMWUyZjI3ODU2OGM0MTA2ZjJmODYyNzZlNmRlMGJmYTYxNDdhZiJ9fX0="}]}}}}},{rewardExp: 0b,maxUses: 2147483647,buy: {id: "minecraft:diamond",Count: 1b},sell: {id: "minecraft:player_head",Count: 1b, tag:{display:{Name:'{"italic":false,"color":"#FFBF00","text":"Amber Gem"}'},SkullOwner: {Id:[I;1391720266,185421599,-1221337695,664966222],Properties: {textures: [{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYThlYTMxOGM1OWQ3NjFkMGViYTE2NTY4Y2I3Y2M2YzBiY2ViNjMzM2ViNWJiY2EwMzRiY2MyMmVlZDFmNmNiNyJ9fX0="}]}}}}},{rewardExp: 0b,maxUses: 2147483647,buy: {id: "minecraft:diamond",Count: 1b},sell: {id: "minecraft:player_head",Count: 1b,tag: {display:{Name:'{"italic":false,"color":"#0F52BA","text":"Sapphire Gem"}'},SkullOwner: {Id:[I;-657040155,-2003219682,-1842764647,-258638967],Properties: {textures: [{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvN2FlNjRkNTczMmU0MGJkYWEzNGJmYThmMTIzMjc5MzBmNDY1MTQxYmI3NjZhN2JlNWEwZmI4ODhmNThhZGMwZCJ9fX0="}]}}}}}]}}