Lot # 94 - Green Tourmaline in Matrix and Imperial Jasper

Opening Bid : $ 5.00
Pickup Instructions: jan 25 10am
Start Date/Time: 02-Mar-2026 7:00:00 AM
End Date/Time: 09-Mar-2026 8:33:00 PM
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Description :

Green Tourmaline (Verdelite)

What it is

Green tourmaline—often called verdelite—is a boron‑silicate mineral that forms in long, striated crystals. It’s part of the tourmaline group, which is known for its wide color range and durability.

Typical Features You’re seeing

  • Rich green coloration, often caused by iron or chromium

  • Columnar or prismatic crystal structure

  • Embedded in a host rock, commonly quartz, feldspar, or mica schist

  • High hardness (7–7.5), giving it a glassy, durable look

Where it forms

Green tourmaline grows in:

  • Pegmatites (coarse‑grained igneous rocks)

  • Metamorphic rocks like schist

  • Regions such as Brazil, Afghanistan, Pakistan, Madagascar, and parts of the U.S.

Why collectors like it

  • Strong pleochroism (color shifts depending on viewing angle)

  • Excellent for jewelry due to hardness

  • Often found in striking, well‑formed crystals


Jasper

What it is

Jasper is a microcrystalline variety of quartz (chalcedony) known for its opaque, earthy appearance. It forms when silica-rich fluids cement fine sediments or volcanic ash.

Typical Features You’re seeing

  • Waxy, smooth surface

  • Opaque green coloration, often from iron silicates or chlorite

  • Fracture lines or mottlingthat give it character

  • Hardness around 6.5–7

Where it forms

Jasper is extremely widespread, forming in:

  • Sedimentary environments

  • Volcanic flows

  • Hydrothermal systems

Common sources include the U.S., Australia, Madagascar, and Africa.

Why collectors like it

  • Endless variety of colors and patterns

  • Takes a great polish

  • Used widely in carvings, cabochons, and decorative pieces


Disclaimer: All identifications are based solely on visual examination of the photographs provided. I do my best to describe each specimen accurately, but I am not a certified geologist, and some assessments may be incorrect. Buyers should review the images carefully and verify details independently.

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