MKPKE Double Spar - Optical Calcite | Polished Iceland Spar | 110 g

Description

• Unique piece | One-of-a-kind
• Polished surface
• Dimensions (L x W x H): approx. 72 x 30 x 18 mm
• Weight: 110 g
• Transparency: Clearly visible doubling effect; crystal-clear with delicate to cloud-like veils and natural inclusions
• Double spar: Text in clear areas of the crystal appears doubledthe optical effect of birefringence (light refraction)
• Iceland spar: Traditionally known as the Vikings sunstonea historical aid for navigation and determining the suns position
• Scope of delivery: 1 x optical calcite (as shown)
• 1 x gemstone information card

Optical calcite | Double spar | Cleavage rhombohedron When a calcite crystal is placed on paper with writing and viewed through, the writing appears doubled and offset from itself. The name double spar is derived from this property. Calcite instead of a compass | Researchers decipher the Vikings sunstone for navigation Research suggests that the Vikings used calcite crystals for navigation. These crystals refract sunlight depending on their position relative to the sun. By rotating the stone, it is possible to find a position in which the intensity of both light beams is equal, indicating the direction of the suneven under cloudy skies or in weak light. Uses Collectors item, decorative article, jewelry item, alternative medicine (wellness, meditation, relaxation, and well-being), or teaching purposes. Gemstones and minerals: Natures diversity! Our items are selected with great care and dedication. Gemstones and minerals are natural products; therefore, their color, shape, and size may differ from the images.

Shipping and Returns

• We offer tracked shipping on all orders. Tracking information will be shared as soon as the order is dispatched.
• Please check the delivery estimate before adding a product to the cart. This is displayed for every product on the website.
• Available shipping methods and charges will be displayed at the time of checkout, depending on your exact location.
• All customers are entitled to a return window of 14 days, starting from the date of delivery of the product(s).
• Customers are advised to read our return policy for details of the return process, eligibility, refunds as well as cancellations or exchanges.
• In case of any issues or concerns about Shipping or Returns, please contact us and we will be happy to help.