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SPINEL

Spinel is a magnesium aluminum oxide, occurring in many colors with excellent durability. Natural spinel is really a group of related minerals in which its magnesium is substituted with other elements, like iron, manganese and zinc. Spinel is found in areas that are famous for sapphire deposits. For many centuries, most gem spinels were misidentified as sapphires or rubies because they have similar properties and occur in the same geological environments.

Spinel, like garnet and diamond, is singly refractive, with the same physical properties in all crystal directions. It belongs to the cubic crystal system, and its characteristic crystal shape is an octahedron, which looks like two back-to-back pyramids. Well-formed spinel crystals are fairly common in nature.

Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.  Intense reds and pinks are caused by traces of chromium. The higher the chromium content, the stronger the red hue. Orange and purple stones owe their color to a mixture of iron and chromium.  Violet to blue spinel can be colored by trace amounts of iron, and vibrant blues owe their saturated color to trace amounts of cobalt.

Spinel was recently added as an 
August birthstone, sharing this month with peridot and sardonyx. It has long been mistaken for ruby by emperors and monarchs. Many of the famous “rubies” of history were actually spinels.
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© COPYRIGHT 2017-2023. ALL RIGHTS RESERVED. .All Rights Reserved. All trademarked names, brands, models, logos, images, and graphics are the sole property of their respective trademark owners and copyright and credit to their respective owners. Timberbrook Capital, Velvet Box Society, this site, including its owners, operators, and developers, is not affiliated with nor endorsed by any watch or jewelry brand manufacturer brand or any subsidiaries thereof, in any way Timbrook Capital, Velvet Box Society is not an authorized retailer of any watch or brand name jewelry manufacturer.  By Browsing, purchasing, or referencing our site for any reason the user  agrees to release all claims to and against Timberbrook Capital, its affiliates, owners, and employees.
  • Shop
    • Latest Finds
    • Shop By Era
    • Engagement Rings
    • Stackable Bands
    • Cocktail Rings
    • Timepieces
    • Gentlemans Accessories >
      • Gentleman's Rings
    • Bracelets
    • Earrings
    • Necklaces & Pendants >
      • Charms & Pendants
      • Chains
    • Diamonds & Gems
    • Signed Jewelry
    • From The Vault
    • Gift Ideas >
      • Wedding Day Gifts
      • Wedding Party Gifts
      • Push Presents Gifts
      • Anniversary Gifts
      • Graduation Gifts
      • Birthday Gifts
      • Religious Gift Ideas
      • Sweet Sixteen Gift Ideas
      • Quinceañera Gifts
    • Birthstone Jewelry
    • Final Sale Items
    • Gift Cards
  • Custom
    • Custom Engagement Rings
    • Custom Jewelry
    • Recreating an Heirloom
    • Family Crest Jewelry
    • Design Process
    • Schedule Consultation
    • For The Trade
    • More For The Trade
  • Sell To Us
    • What We Buy
    • Ways To Sell
    • Expert Qualifications
  • Services
    • Appraisal Services >
      • Jewelry Insurance
      • SELL TO US
      • Appraisal Fee Schedule
      • Exchange
      • Gem Identification
      • Metal Analysis
      • Estate Appraisals
      • Authentication Services
      • Expert Witness & Court Related Matters
      • Museum Collection Services
    • Schedule Consultation
    • Custom Jewelry Design
    • Recreating an Heirloom
    • Jewelry Repair
    • Jewelry Restoration
    • Timepiece Repair
    • Diamond Cutting and Gemstone Repair
    • Find Jewelry For Me
    • Find a Watch For Me
    • Find a Diamond
    • Jewelry Rental
    • Insurance Replacement
    • Private Collection Management
    • Layaway Plan
    • Consignment
    • Wish List
    • Wholesale Inquiries >
      • Host a Trunk Show
  • The Brand
    • Our History
    • Our Experts
    • Our Values >
      • Corporate Responsibility
      • Sustainability
      • Military and First Responder Discounts
      • Kimberly Process
    • Jewelry School >
      • Makers Biographies
      • Educational Session
      • Eras of Style >
        • Ancient
        • Medieval & Renaissance
        • Baroque & Rococo
        • Georgian
        • Victorian
        • Edwardian
        • Art Nouveau
        • Arts & Crafts
        • Art Deco
        • Retro
        • Hollywood Glam
        • Mid-Century Modern
        • Brutalist
        • Art Organique
        • 1980's Jewelry
        • 1990's Jewelry
        • Contemporary
        • Simplistic
      • Diamonds & Gems >
        • Gemstone Education >
          • Gemstone Knowledge >
            • Approximate Gemstone weights
            • Carat to MM Conversion
            • Equivalents Chart
            • Gemstone Colors
            • Created, Synthetic & Simulated Gemstones
          • Gemstone Laboratories
          • All About Gemstones
        • Diamond Education >
          • Diamonds
          • Lab Grown Diamonds
          • Diamond Cutting and Gemstone Repair
          • Comparative Round Size Info
          • Diamond Carat Weight by MM
      • Counterfeit Jewelry & Watch Identification
      • Engagement Rings
      • Diamond Earrings
      • Timepieces >
        • Watch Anatomy
        • Vintage Rolex
        • Watch Terms
      • Sizing Help >
        • Ring Width
        • Ring Size
        • Wrist Size
        • Ankle Size
        • Earring Size Guide
        • Watch Size Guide
      • Styles, Finishes, & Fit >
        • Ring Designs & Fit
        • Men's Wedding Band Finishes
        • Band Width
      • Custom Jewelry
      • Metals
      • Engraving
      • Birthstones
      • Jewelry Care
      • Jewelry Terms
    • Press
    • Be Social
    • Gems by VBS The BLOG
    • Reviews
    • Advice >
      • The Courtship
      • The Engagement
      • The Wedding
      • After The Wedding
    • Events
    • Careers
    • Affiliate Program
    • The Archives: A Collection of Sold Items
  • Contact