SKU: 898719738

Smoky quartz cluster with black tourmaline and hyalite

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Description

Smoky quartz cluster with black tourmaline and hyaliteLocale: Erongo Mountain, Namibia Approx dimensions: 4. 5 x 3. 5 x 3" Approx weight: 488g ** Loose piece on underside The top of this specimen is a smoky quartz cluster, perched on an aggregate of black tourmaline and irregular shards of smoky quartz, coated in hyalite. The largest smoky quartz crystal in this cluster is 3" with lighter color, good clarity, and a faint phantom. The black tourmaline (schorl) is mostly poorly developed, but there is one

Locale: Erongo Mountain, Namibia

Approx dimensions: 4.5 x 3.5 x 3"

Approx weight: 488g

** Loose piece on underside

 

The top of this specimen is a smoky quartz cluster, perched on an aggregate of black tourmaline and irregular shards of smoky quartz, coated in hyalite. The largest smoky quartz crystal in this cluster is 3" with lighter color, good clarity, and a faint phantom. The black tourmaline (schorl) is mostly poorly developed, but there is one small well-formed crystal nestled in the smoky quartz crystal, featuring the classic trigonal 'Mercedes' termination characteristic of Erongo material.

Smoky quartz from the Erongo region is typically a quite dark brown-black color, with lower clarity due to natural inclusions, and a flat surface luster caused by etching. It grows sculptural elongated and angular points with nice striations.

Smoky quartz gets its dark coloration from trace elements that tint dark when the quartz is exposed to natural radiation. Don’t worry, the specimen can't expose you to radiation—even if the hyalite turns "radioactive" green under UV light due to trace elements of uranium.

Hyalite is a form of opal, which in turn is part of the broader quartz family. Related minerals commonly grow together because they have similar requirements for growth: in this case, the availability of silica that is the basis for the quartz family. Growing conditions that initially produced quartz changed, and a later generation of growth deposited the less common hyalite on the specimen.

Hyalite displays botryoidal growth (bunches of “grape-like” round crystals) with a glossy high luster like a layer of bubbles. I think it looks like mermaid caviar! Hyalite can appear fluid with formations that look like the splash from a drip frozen in place, or as if the edge has been peeled up away from the quartz like a tutu. The hyalite on this specimen may be "hidden" on the bottom, but it is lush with very clear large botryoidal hyalite. There are two spheres that are white at the center like snowballs trapped in the hyalite.

UV reactivity Hyalite is so strongly UV reactive that you can see it in sunlight. Under indoor lighting it is pale yellow to golden in color, but turns visibly greenish yellow when exposed to the UV in sunlight. 395nm UV fluoresces a strong green, with an icy blue undertone. Best viewed in darker conditions. 365nm UV fluoresces a strong yellowish-green color, generally visible even in bright lighting. No phosphorescence detected.

Loose piece: There is a shard of smoky quartz on the underside that is loose and will move around (you may hear a faint 'tink' sound like porcelain!). It is firmly wedged between crystals and doesn't seem in danger of falling out.

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SKU: 898719738

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4.8 ★★★★★
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Susan Cedar
Alexandria, US
★★★★★ 4
My dog loves glowing fetch at night!
Style: Glow Balls (Pack of 3), Size: 2.5 inch
Fantastic. Sturdy. My dog loves them Glow in the dark is great for fetch at night. I keep a flashlight with me because the glow doesn't last really long. But they charge very quickly and are really bright.
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Reviewed in the United States on February 22, 2026
M
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Maddox
Fort Morgan, US
★★★★★ 5
Indestructible
Style: Fetch Balls (Pack of 2), Size: 3 inch
These balls are indestructible! We have a lab and a lab mix and they CANNOT damage these balls. They love them for fetch and to just chew on them (slightly squishy, but NO damage). Best toys we have bought for them.
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Reviewed in the United States on April 19, 2026
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Verified Purchase
Animal Lover
Omaha, US
★★★★★ 5
Great trial set. Just be careful throwing the orange one!
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Blue isn't that easy to see in the yard White charges with bright light/UV and is truly a game changer for night-time fetch. Both dogs clearly favor it. Orange is easy to see in the grass at day They're 3 different weights as well, so double trial. I prefer medium for my big dogs, though light performs well too The orange is HEAVY and unyielding. Do NOT throw it with a ball thrower. It could damage your house or knock your dog out. Seems tough though.
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Reviewed in the United States on January 16, 2026
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Verified Purchase
Spo509
Lexington, US
★★★★★ 3
Not as good as chuck it anymore
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
I have bought these before and the where just like the chuck it balls. These are not those balls. The are lighter and my dog has already cause damage to one
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Reviewed in the United States on March 16, 2026
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Verified Purchase
jewelrycook
Carnegie, US
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value. By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026

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