product schema

<script type="application/ld+json">
{
  "@context" : "http://schema.org",
  "@type" : "Product",
  "name" : "PENCIL",
  "image" : "https://example.com/pencil1.jpg",
  "description" : "(Description about your product.)",
  "url" : "https://example.com/pencil/",
  "brand" : {
    "@type" : "Brand",
    "name" : "(Your Brand Name)",
    "logo" : "https://example.com/logo.png"
  },
  "offers" : {
    "@type" : "Offer",
    "url": "https://example.com/pencil",
    "priceCurrency": "USD",
    "price" : "25.00",
    "availability": "https://schema.org/InStock",
  },
  "aggregateRating" : {
    "@type" : "AggregateRating",
    "ratingValue" : "4.4",
    "ratingCount" : "51"
  },
  "review" : {
    "@type" : "Review",
    "author" : {
      "@type" : "Person",
      "name" : "Roy"
    },
    "datePublished" : "2019-05-05",
    "reviewRating" : {
      "@type" : "Rating",
      "ratingValue" : "4.8",
      "bestRating" : "5"
    }
  }
}
</script>