{"type":"firestarter.listing","listing":{"id":"lst_Q2IaF1aH","product_name":"Custom Cushion Brilliant Cut Diamond Ring in Gold","category":"Ring","description":"Design your custom engagement ring with the cushion cut diamond of your choice. Your ethical dream ring, made to order, just for you. \nDetails\n\n18 karat yellow, rose or white gold\n\nOur signature ethical gold: mercury-free and mined by indigenous women who are paid more than the international gold price\nCushion cut diamond of your choice\n\nMade to order in 8 to 12 weeks\n\n\n\nCustom Cushion Diamond Ring\nDesign your own diamond engagement ring or self love ring. \nThe cushion cut gets its name from its pilllow-like shape. Cushion cut diamonds are square or rectangular in shape, but unlike the princess cut diamond, their corners are rounded. Cushion cut diamonds tend to have more fire than other cuts. The cushion cut is the third most popular diamond shape.\nThe modern cushion cut resembles a cross between the old mine cut and a modern oval cut, giving it a hint of nostalgia. \nChoose a cushion cut diamond that speaks to you and let's get started on your cushion diamond engagement ring. \nWe’re making this for you, from scratch\nYour custom cushion diamond ring will be made to order with the cushion diamond of your choice in around 8 to 12 weeks. You'll receive a photo before we ship it out. The price is for one finished ring in 18 karat eco gold.\nSince your cushion cut diamond ring will be made especially for you, we don’t accept returns on custom orders. You can read our return policy here.\nYour custom ring design\nMetal\nYou can choose from 18 karat yellow gold, rose gold or white gold. We use 18 karat ethical gold, which is mined and processed with traditional, mercury free, low impact practices by indigenous Dayak women in Central Kalimantan, Indonesian Borneo, who receive fair pay. Our 18 karat white gold is alloyed with palladium. This white gold has a warm gray color. If you prefer that white metal look, we recommend adding rhodium plating for $50.\n\n\n\nRing size\nWe use US ring sizes.\n\n\nNeed help with conversion? Download our free printable ring size guide.\nWant to check yo","images":["https://cdn.shopify.com/s/files/1/1205/9982/products/custom-cushion-brilliant-cut-diamond-ring-372844.jpg?v=1661841404","https://cdn.shopify.com/s/files/1/1205/9982/files/BCUS1-BCUS4ONWHITEBACKGROUNDWITHCODE.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/files/BCUS1-BCUS4ONHANDWITHCODE.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/products/custom-cushion-brilliant-cut-diamond-ring-649190.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/products/custom-cushion-brilliant-cut-diamond-ring-280685.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/products/custom-cushion-brilliant-cut-diamond-ring-760474.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/products/custom-cushion-brilliant-cut-diamond-ring-414834.jpg?v=1712638271","https://cdn.shopify.com/s/files/1/1205/9982/files/BCUS4updated_2bf50e24-aac7-4a77-96ad-34ea5f349bec.jpg?v=1716269878"],"price":1000,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:28.578Z"},"share_url":"https://firestarter.network/l/lst_Q2IaF1aH","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_Q2IaF1aH' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Custom Cushion Brilliant Cut Diamond Ring in Gold' and a budget_max comfortably above $1000.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}