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Crushed Midnight Blue Goldstone (Synthetic), Coarse Crush, Gravel Size, 4mm - 2mm

Crushed Midnight Blue Goldstone (Synthetic), Coarse Crush, Gravel Size, 4mm - 2mm

Regular price $6.75 USD
Regular price Sale price $6.75 USD
Sale Sold out

Blue Goldstone is a synthetic, glittering glass that was originally manufactured in Venice during the 17th century. Blue Goldstone is made in a low-oxygen reducing environment and contains tiny crystals of metallic cobalt within a silica matrix. During production, silica, cobalt, and other metal oxides are melted together and then cooled very slowly to form these tiny glittering crystals. Goldstone does polish up nicely and would be great in your inlay or jewelry projects.

Our coarse material is considered to be pea-sized gravel, ranging between 4 millimeters to 2 millimeters. Please see the corresponding sediment size chart. 

Mineral Properties

  • Mohs’s Hardness: 6
  • Specific Gravity (g/cm3): 2.5 - 2.8
  • Luster: Vitreous
  • Color: Midnight Blue, Dark Blue
  • Origin: Synthetic/Man-made

This product is man-made. Pictures are taken in full sun and material is dry. Size measurements are using the metric system (millimeters), including the metric ruler (cm/mm) as shown in the product photos.

  • Free Domestic Shipping $50+
  • Fast and Easy Returns
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  • Shipping

    We offer free US shipping on any order over $50. Orders are typically shipped within one to two business days and spend 2-5 days in transit. This means your order should arrive at your doorstep within 4-6 business days -- and often less!

  • Returns

    We offer a hassle-free 30-day return policy. If you wish to return or exchange any product in your order, simply email, and we will help you process the request.


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