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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 |
| Current bid: |
0 |
| Highest bidder: | -- |
| Bidding starts in: |
Description :
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. 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 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. Strong pleochroism (color shifts depending on viewing angle) Excellent for jewelry due to hardness Often found in striking, well‑formed crystals 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. Waxy, smooth surface Opaque green coloration, often from iron silicates or chlorite Fracture lines or mottlingthat give it character Hardness around 6.5–7 Jasper is extremely widespread, forming in: Sedimentary environments Volcanic flows Hydrothermal systems Common sources include the U.S., Australia, Madagascar, and Africa. Endless variety of colors and patterns Takes a great polish Used widely in carvings, cabochons, and decorative piecesGreen Tourmaline (Verdelite)
What it is
Typical Features You’re seeing
Where it forms
Why collectors like it
Jasper
What it is
Typical Features You’re seeing
Where it forms
Why collectors like it
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