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 absolutely love these tunnels! they seem pretty high quality and are very symmetrical. the flares are flush and not super huge like all my other glass tunnels! the price is great right now so I think I'm gonna get more while they're on sale!
Love it! Great quality, just as pictured. Fast delivery
A solid set of tunnels. Well crafted. Heavy duty. Really nice. Would highly recommend.
A solid set of tunnels. Well crafted. Heavy duty. Really nice. Would highly recommend.
A solid set of tunnels. Well crafted. Heavy duty. Really nice. Would highly recommend.
bought these several times in different sizes. amazing per the usual. :)
Always a hit! This is my 3rd or 4th pair from this shop, always excellent quality and looks great!
So rare to find a size 7mm! Very happy with these. Thank you
shipping was expeditious and the items are incredibly well made. they slipped right in, and are incredibly comfortable. the wearable area is just long enough to have room for the O-ring, but short enough where I can turn my head fully and the eyelet doesnt smooth into my neck lol. this is my 2nd purchase from this studio, and DEFINITELY not my last :p
I finally found a 9mm size and they fit great.
These tunnels are absolutely gorgeous!! Giving off major Beetlejuice vibes!! 😍 Quality is outstanding!! Thank you for the 15% my next purchase too!! Totally buying more!! My new favorite shop!!
The glass saddle plugs are my second order. I love it!
high quality item, ill be back for more
high quality item, ill be back for more
absolutely gorgeous pair of glass tunnels
This shop is my go-to for glass tunnels. The shorter wearable length is *chef's kiss*. I'll be back!
Always love these glass tunnels. Hard to find single flared tunnels especially in the color scheme I love.
The plugs are very cute I love the color, they darken when wearing them but that’s expected their glass but the color actually shows very well, they definitely fit as measured. Kind of want to get the next size up. They took awhile to arrive but were in the delivery date.
these tunnels did not disappoint. glad I got em
they look very nice very sturdy
Very cool and pretty, would absolutely recommend.













