Borosilicate Glass Single Flare Tunnel - Cobalt Blue
Borosilicate Glass Single Flare Tunnel - Cobalt Blue
4.93/5
16 in stock
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Add a bold and vibrant touch to your jewelry collection with our Cobalt Blue Borosilicate Glass Single Flare Tunnels, sold in pairs. These beautifully handcrafted tunnels are made in the USA from durable, high-quality borosilicate glass, ensuring a comfortable and lightweight fit for stretched ears.
The deep cobalt blue color exudes sophistication, while the polished glass surface enhances its sleek and modern appeal. Featuring a single flare design, these tunnels offer easy insertion and come with a removable O-ring for a secure hold, making them perfect for both new and experienced stretchers.
Features:
- Premium Borosilicate Glass: Strong, lightweight, and smooth
- Vibrant Cobalt Blue Hue: A bold and striking color for any look
- Single Flare with O-Ring: Easy to wear and secure fit
- Handcrafted in the USA: Superior quality and craftsmanship
- Comfortable for Daily Wear: Lightweight for all-day use
- Sold in Pairs: Perfectly matched for a cohesive style
Upgrade your stretched ear jewelry with these Cobalt Blue Borosilicate Glass Single Flare Tunnels, designed for those who love unique, high-quality body jewelry with a standout aesthetic.
Materials
Materials
When compared to regular glass, borosilicate is safe for initial piercing, resistant to chemicals, scratch- resistant, less susceptible to fractures, resistant to thermal shock, and not poured into molds. All our glass jewelry is handcrafted in St. Louis, Missouri.
Care Instructions
Care Instructions
MM Glassworks strictly uses borosilicate glass that is hand made in the USA. Borosilicate Glass is scratch resistant but still fragile and should be treated as such. All glass is guaranteed to arrive scratch and breakage free. We will package each order in a foam insulated box free of charge. Borosilicate glass is autoclavable. Do not use harsh chemicals on any jewelry. Do not wear in the shower or while swimming. Wash with antibacterial soap, but take caution while removing; glass will break if dropped on tile or cement.
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If there is a perfect cobalt blue, this is perfect cobalt blue!
Some of the best glass tunnels around. Do wish they were available in double flaired.
Fantastic color and quality. Arrived really quick. Love them.
This is my second pair. I started with the clear. Love these.
I got a 8g and it was smaller than expected and slipped out. They don’t do exchanges so be careful.
One of the items from my order was incorrect but the seller corrected the issue and sent me the right size I ordered. Love these because metal irritates my skin. Super easy to clean! Thank you! Would order from again!
Great craftsmanship I really love them
I frequently buy from this shop and am always happy with the quality and customer service!
They're very comfortable and love the flash of dark blue when I move my head.
Very pretty! fits well, love the blue color
Great as always, I have about 13 pairs from this shop.
Really nice quality! Very comfortable to wear too!
Nice quality, exactly what I expected.
Shipped in only a few days. They’re beautiful.
These two tunnels had different inner widths, also the one that had the smaller inner width was too small for my ear. Love this shop but this made me sad. UPDATE: Nice seller of the shop corrected this issue for me!!!!
I love their jewelry. Very reasonable prices and made well. Arrives quickly. Thank you so much!
Never disappointed! I have so many pairs from this shop.

I’ve bought many pairs of tunnels from this shop and they’re always great. Shipping is super fast too! Thank you!
I’ve bought many pairs of tunnels from this shop and they’re always great. Shipping is super fast too! Thank you!
I’ve bought many pairs of tunnels from this shop and they’re always great. Shipping is super fast too! Thank you!
Quick delivery. Item arrived in perfect condition. Thanks again!
Quick delivery. Item arrived in perfect condition. Thanks again!
Quick shipping! Item arrived in perfect condition.
Quick shipping! Item arrived in perfect condition.
These are beautiful in their simplicity. I absolutely love how light they are. 10/10
sooo pretty and I really was trying to find glass tunnels in my size this shop is awesome
The plugs were beautiful and are soo comfortable. I love them and will probably be buying them in a larger size when I size up!
Fits comfortably and looks great
I love the shape of these! It's so difficult to come across glass tunnels and they fit perfectly.
Great double flare tunnels. Well made. Beautiful design with the stripes.
As pictured, good quality, probably won’t show as very green once in your ear.
Good quality but much darker than pictured.
Great as tunnels for hangers and weights, wires.
This is my second purchase from this artist. Very professional, quality items, well-packaged, and shipped immediately. I will definitely return! Thank you.
this is my second time ordering and I am so in love with my tunnels!!
Items arrived, shipped quickly, as described. Thanks!

















