{"product_id":"1974-amethyst-stamp-10-used-mineral-heritage-series-scott-1540","title":"1974 Amethyst Stamp – 10¢ – Used – Mineral Heritage Series – Scott #1540","description":"This 10¢ U.S. postage stamp from 1974 features a vivid depiction of amethyst, the purple variety of quartz. Issued on June 13, 1974, as part of the four‑stamp Mineral Heritage series, it was released alongside designs showcasing petrified wood, tourmaline, and rhodochrosite. Cataloged as Scott #1540, this diamond‑shaped stamp remains valid for postage when combined with additional stamps to meet current rates. A great addition for collectors of geology, minerals, or 1970s USPS commemoratives.\u003cbr\u003eFeatures:\u003cbr\u003e- Year: 1974\u003cbr\u003e- Denomination: 10¢\u003cbr\u003e- Subject: Amethyst (quartz)\u003cbr\u003e- Series: Mineral Heritage (set of 4)\u003cbr\u003e- Scott #: 1540\u003cbr\u003e- Issue Date: June 13, 1974\u003cbr\u003e- Shape: Diamond format\u003cbr\u003e- Condition: Used\/postmarked\u003cbr\u003e- Use: Collectible, geology-themed, philatelic interest\u003cbr\u003e","brand":"USPS","offers":[{"title":"Default Title","offer_id":51699653673259,"sku":"314 - Letter 618 - USPS  10c Amethyst Stamp","price":6.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/5064\/4011\/files\/6fc3d385-d096-4827-80b6-0781286964bd.jpg?v=1767590189","url":"https:\/\/www.sweetdealalabama.com\/products\/1974-amethyst-stamp-10-used-mineral-heritage-series-scott-1540","provider":"Sweet Deal Alabama LLC","version":"1.0","type":"link"}