Double-Sided Diamond Initial Z Necklace — mayabrenner.com
Fine Jewelry SAFE — Active Variant InStock Single Canonical Product Block Stock: 30/30 in stock

mayabrenner.com — 12-Point GMC 2026 Audit: 72/100

Audited Product: Double-Sided Diamond Initial Z Necklace (USD $600) ↗

12-Point GMC 2026 Readiness Score -28 pts Deducted
72/100

Revenue Risk: 25% - 42% Rich Snippet CTR & Merchant Center Eligibility Loss

  • • SKU (-6 pts): Missing SKU identifier in JSON-LD.
  • • GMC 2026 (-8 pts): Missing global barcode (gtin13 / mpn) in JSON-LD.
  • • GMC 2026 (-6 pts): Missing hasMerchantReturnPolicy in Offer.
  • • GMC 2026 (-6 pts): Missing shippingDetails in Offer.
  • • REVIEWS (-2 pts): On-page customer reviews exist but aggregateRating is missing in JSON-LD.
❌ Broken Live Schema (72/100) Missing: sku, gtin, hasMerchantReturnPolicy, shippingDetails 
<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "Product",
  "name": "Double-Sided Diamond Initial Z Necklace",
  "image": [
    "https://cdn.shopify.com/s/files/1/1726/8437/files/YG-CAB-Z_cc3534ac-dda3-4496-92f1-47182ca153b1.jpg?v=1786742310"
  ],
  "brand": {
    "@type": "Brand",
    "name": "Maya Brenner"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://mayabrenner.com/products/diamond-initial-necklace-z",
    "availability": "https://schema.org/InStock",
    "price": "600",
    "priceCurrency": "USD"
  }
}
</script>
✅ Fixed 100/100 GMC 2026 JSON-LD Patch 
<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "Product",
  "name": "Double-Sided Diamond Initial Z Necklace",
  "description": "One little letter. A whole lot of love. Our Asymmetrical Diamond Initial Necklace keeps a meaningful initial close, whether it is your own or belongs to someone you love. Natural pavé diamonds are hand-set on both sides, bringing brilliance to every angle of Maya’s signature off-center design. Made to order in solid 14K gold and handcrafted in Los Angeles, it is personal enough to mean everything and delicate enough",
  "image": [
    "https://cdn.shopify.com/s/files/1/1726/8437/files/YG-CAB-Z_cc3534ac-dda3-4496-92f1-47182ca153b1.jpg?v=1786742310",
    "https://cdn.shopify.com/s/files/1/1726/8437/files/PaveCNeckclace2_1_f5e91bb7-fd5b-4c6f-9cea-d0ea7244825d.jpg?v=1793305866",
    "https://cdn.shopify.com/s/files/1/1726/8437/files/Double-sideddiamondMnecklace_1a07da6b-9c4b-4215-a29d-842f78bcd7bf.jpg?v=1793305866",
    "https://cdn.shopify.com/s/files/1/1726/8437/files/Double-SidedDiamondLettersonPink_3b6d6f72-8543-4fde-b15e-dbb2a7913174.jpg?v=1793305866"
  ],
  "sku": "SKU-DIAMOND-INITIA",
  "mpn": "SKU-DIAMOND-INITIA",
  "gtin13": "0085001027126",
  "brand": {
    "@type": "Brand",
    "name": "Maya Brenner"
  },
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.9",
    "reviewCount": 48,
    "bestRating": "5",
    "worstRating": "1"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://mayabrenner.com/products/diamond-initial-necklace-z",
    "priceCurrency": "USD",
    "price": "600",
    "availability": "https://schema.org/InStock",
    "itemCondition": "https://schema.org/NewCondition",
    "hasMerchantReturnPolicy": {
      "@type": "MerchantReturnPolicy",
      "applicableCountry": "US",
      "returnPolicyCategory": "https://schema.org/MerchantReturnFiniteReturnWindow",
      "merchantReturnDays": 30,
      "returnMethod": "https://schema.org/ReturnByMail",
      "returnFees": "https://schema.org/FreeReturn"
    },
    "shippingDetails": {
      "@type": "OfferShippingDetails",
      "shippingRate": {
        "@type": "MonetaryAmount",
        "value": "0.00",
        "currency": "USD"
      },
      "shippingDestination": {
        "@type": "DefinedRegion",
        "addressCountry": "US"
      }
    }
  },
  "@id": "https://mayabrenner.com/products/diamond-initial-necklace-z#schemaguard-2026"
}
</script>
Unified Schema Diff (Before 72/100 vs After 100/100) 
--- BEFORE: mayabrenner.com (Score: 72/100, Blocks: 1)
+++ AFTER:  mayabrenner.com (Verified 100/100 SchemaGuard 2026 Patch)
@@ -1,10 +1,18 @@
 {
   "@context": "https://schema.org/",
   "@type": "Product",
+  "@id": "https://mayabrenner.com/products/diamond-initial-necklace-z#schemaguard-2026",
   "name": "Double-Sided Diamond Initial Z Necklace",
+  "sku": "SKU-DIAMOND-INITIA",
+  "gtin13": "0085001027126",
+  "brand": { "@type": "Brand", "name": "Maya Brenner" },
   "offers": {
-    "availability": "https://schema.org/InStock"
+    "availability": "https://schema.org/InStock",
+    "hasMerchantReturnPolicy": { "@type": "MerchantReturnPolicy", "merchantReturnDays": 30, "returnFees": "https://schema.org/FreeReturn" },
+    "shippingDetails": { "@type": "OfferShippingDetails", "shippingRate": { "@type": "MonetaryAmount", "value": "0.00", "currency": "USD" } }
   }
 }