Borosilicate Glass Single Flare Tunnel - Cobalt Blue
Borosilicate Glass Single Flare Tunnel - Cobalt Blue
4.86/5
17 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.

They are gorgeous and incredibly well made. I will be ordering more!
Favorite shop for glass tunnels, well made and beautiful
It is so hard to find single flare glass plugs especially for a decent price. I have been looking for some to help my lobes get thicker. It only took a few days for them to arrive and the seller shipped them so fast! They feel great in my ears and are super light weight and cute! Thank you
I’ve really enjoyed these! The only thing I wish is that the flare was slightly bigger but I could order a size up so they fit more snug but that’s on me, not the seller.
Great seller fast response, faster shipping, quality product, the hollow part is wider than any other 0g plug I’ve owned, exactly what I was looking for
Quick response from seller, fast shipping, high quality, accidentally dropped the first one when putting it in and not a single crack or fracture just bounced a foot off the shower floor, I’d say they’re pretty good!
These are really cute! Thank you!
Great color. Super cute. Perfect fit.
Great color! Fit perfectly. Would purchase again
Very cute. Perfect fit. Would purchase again.
These are amazing! I can’t believe how pretty they look on.
Exactly as expected! Bright color and gauges fit well.
Love these, especially because glass ones don’t make my ears smell funky like metal does.
Love these so much, great tunnels
Absolutely love these, color is gorgeous and they’re so strong for how thin they are as well. I had a pair for about almost a year, I’m clumsy and they’ve held up through 50+ drops lol. My favorite tunnels tho so getting a replacement in case I do break them :)
Great quality. A little lighter color wise than expected but still pretty amazing
love these! they look great in my conch punch
Great quality love them! Ordering more
Thank you! They fit perfectly 👌. I’m one happy customer. You rock my friend!
Love it. I consistently order from this shop and plan to continue. Always high quality
10000/10! I absolutely love these glass tunnels!! They are so beautiful and I just can’t get enough!