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Aug/26/2022
2340
12 min read
NS Novelties Firefly Heart Review: Let There Be Light!
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Our articles may contain affiliate links - if you enjoy our content, support us by shopping through them! We earn a small commission at no extra cost to you. Learn more here.
Sometimes, when the sun goes down, all I can think about is reaching for something playful, pretty, and a little different from my usual toys. And here’s a question for you: if a glass dildo glows in the dark and no one’s around to admire it, does it still steal the show? Well, that’s what this girl is about to find out in her NS Novelties Firefly Heart review.
This glow-in-the-dark glass dildo is playful, dreamy, and surprisingly functional. It also has a bubbly shape that feels fantastic as the smooth curves create firm, satisfying pressure during vaginal or anal play. So allow me, your friendly neighborhood toy lover, to put it to a proper test and tell you more about it in this NS Novelties Firefly Heart review. Lights off, pleasure on.
What the Firefly Heart Actually Does
For starters, the Firefly Heart is a glass dildo with a flared base. To me, it kind of looks like a super long butt plug that you can use for all sorts of adventurous anal play. You know the rest: use plenty of lubricant, take your time, and ease into it carefully. You can use this toy for anal training, couples play, or extra stimulation during partnered sessions. Of course, you can also enjoy it the “classic” way and use it vaginally for firm, focused G-spot pressure.
Now, remember that this is a glass dildo. And you’ll never know how it compares to standard silicone dildos until you try one. While classic dildos are flexible and softer, glass always stays firm. Always. That means it creates a very different kind of internal pressure during vaginal or anal play, with smooth, precise stimulation that can feel much more intense than softer materials. But that’s not all.
Again, the best thing about the NS Novelties Firefly Heart is that it glows in the dark. I hadn’t heard much about NS Novelties before, but they definitely managed to get my attention with that feature. Sure, a glow-in-the-dark effect is not the most important thing when choosing a dildo, but it does make this toy feel playful, unusual, and seriously fun to look at. If you enjoy glass toys, visual play, and firm internal stimulation, the Firefly Heart adds a little extra sparkle to the experience. So how did it feel when I tested it properly? Let’s get into the fun part.
First Impressions
The night is dark and full of terrors! But! The Firefly Heart is bright and beautiful and full of hope!
I’m positive that most people will have one of those “awww, it’s so cute” reactions when they see this toy. Seriously, the Firefly Heart looks adorable. The cutest thing about it has got to be the heart-shaped handle, which adds a playful, romantic touch to the whole design. It also makes the toy easier to hold and control during vaginal or anal play, especially if you’re using it with a partner. But let’s get back to business and see how this glow-in-the-dark glass dildo actually performs.
When I first opened this dildo, I was stunned by its unique shape and glossy look. This toy, like most other glass dildos, is made of hand-blown borosilicate glass. It feels silky smooth to the touch. However, it has that extra tough glossy texture that will provide hours and hours of fun. What’s more, this dildo uses annealed glass. Annealing is a process that removes residual stresses in order to make the glass extremely resistant.
Even better, when we get past the heart-shaped handle, we’ll see a nice wide base. This makes the toy suitable for all kinds of anal romps. It also ensures that the dildo will never get stuck inside you and make your guts glow while you’re running to the ER.
Anyway, after the base, you’ll see a curvy shaft with three bead-like curves across it. To me, this curvy and wavy texture looks like it can do a lot of damage internally – in a good way! Oh and there are all sorts of cute little bubbles on the inside that look otherworldly when they light up!
Features
- 100% annealed borosilicate glass (non-porous, body-safe, hypoallergenic)
- Heart-shaped handle (doubles as flared anal-safe base)
- Insertable length: 5.2 inches / Insertable width (diameter): 1.34 inches
- Total length: 7.2 inches
- Three bead-like curves along shaft
- Bubble glass detail (glows when charged)
- Glow-in-the-dark: phosphorescent, charges in sunlight or under UV light, glows phosphorescent green in darkness
- Temperature play compatible: heat in warm water or cool in cold water for different sensations
- Compatible with all lube types: water-based, silicone-based and oil-based
- Glass is always firm and non-flexible – applies consistent directional pressure unlike silicone
- Boil-safe for full sterilization
- Around $45 price point
- 1-year warranty with valid receipt
- Discreet shipping (billed as MSNV Inc.)
Materials
While glass dildos always have a similar toughness to them, they differ based on texture, shape and transparency. In my NS Novelties Firefly Heart review, I was impressed with the quality of the actual glass compared to the price. At around $45, you’ll get a premium-looking glass toy that will literally last forever.
As I said, this thing is made of annealed borosilicate glass, so it feels super durable. I don’t exactly know how they get that glowing effect, but you’ll need to leave your dildo out in the sun to “charge up”. Then, turn off the lights and this little beauty glows with a phosphorescent green color. Plus, all the little bubbles inside it light up, making it look like some unusual celestial object made for playful glass toy adventures. The Force is strong with this one.
And yes, the glowing effect sort of resembles a firefly, but no matter how cute those things are, I’m not exactly trying to mix bugs and bedroom fun together. Anyway, while the material is sturdy and durable, it’s also incredibly easy to clean. After testing it with different types of lube, I was able to clean it in just a few minutes. The neat thing here is that the glass used on this model is non-porous and body-safe, making it a hygienic choice for vaginal or anal play when cleaned properly. Plus, its weight feels nice and stable, both in my hand and against my most sensitive spots. When I tested it, I also used warm and cold water to change the temperature of the glass for an instant hit of tingly fun.
Size
Every once in a while, I test a 5 or 6-inch toy and start wondering if it will feel too small for me. Yes, I’m used to larger toys and Richard is definitely not exactly modest in the size department, but I always forget that 5 to 6 inches can be more than enough when the shape is done right. When I started my NS Novelties Firefly Heart review, I thought the 5.2 inches of insertable length might feel a bit underwhelming. However, that wasn’t the case at all. Basically, the size is slightly above average, which makes it great for all kinds of vaginal and anal play. Combined with the swirly shape of the shaft, I’d say this length works well for both beginners and more experienced users.
Plus, the width is around 1.34 inches, which also keeps it in a comfortable, approachable range. Still, it feels fantastic during anal play because the firm glass and curved shape create a very noticeable stretching sensation. I would have preferred a slightly thicker shaft for vaginal use, though. Even so, the three large curves along the shaft introduce some really neat sensations and can feel very intense against the G-spot. Even better, I loved how each curve created that slow, beaded feeling during anal play. Pushing the whole shaft in gradually feels a bit like using a long, smooth set of anal beads, which is definitely part of the Firefly Heart’s playful charm.
On a side note, the heart-shaped base is much thinner than the dildo and I think this is the most vulnerable spot of this toy. It looks like it could crack if you drop it, so I’d advise you to be extra careful here.
💡 Pro Tip: To get the most out of the glow effect, charge the Firefly Heart in bright direct sunlight for 20-30 minutes rather than indoor lighting - outdoor sun charges phosphorescent glass significantly faster and brighter than indoor bulbs. The glow will be noticeably more intense and last closer to 60 minutes rather than 30. For temperature play, chill the toy in cold water for 2 minutes rather than ice - ice direct on glass can cause uneven stress. Similarly, warm in water rather than direct microwave or oven exposure. The three bead-like curves are best used with a slow withdrawal pace during anal use - each bead creates a distinct sensation on the sphincter when withdrawn slowly. Rushing through defeats the textural benefit.
The Glow Effect in Practice
By far, the glowing effect was the most entertaining aspect of my NS Novelties Firefly Heart review. It made the whole experience feel more intimate, playful, and visually unique. Plus, Richard loved seeing the soft glow during anal play, which added a fun little surprise to the moment. It’s truly something special, and it can bring a different kind of closeness to solo or partnered sessions. Plus, if you enjoy taking tasteful photos or videos with your partner, the glow-in-the-dark effect can look seriously beautiful on camera.
Pros
- Glow-in-the-dark phosphorescent effect: visually distinctive, charges in sunlight, glows green in darkness for 30-60 minutes
- Borosilicate glass: non-porous, hypoallergenic, body-safe, boil-safe for full sterilization
- All lube types compatible: water-based, silicone-based and oil-based all work with glass
- Temperature play: heat or chill in water for distinctly different sensations
- Three bead-like curves: create an anal-bead-like sequential sensation during insertion and withdrawal
- Heart-shaped flared base: safe for anal use; charming aesthetic detail
- Around $45: exceptional value for annealed borosilicate glass
- 1-year warranty
Cons
- Heart-shaped base is notably thinner than the shaft: the most vulnerable point on the toy; will crack if dropped on hard surfaces; requires padded storage
- Glow effect fades: fully charged glow lasts approximately 30-60 minutes in darkness; must be recharged in sunlight or UV before each use
- 1.34-inch diameter: suitable for intermediate users; may not satisfy those seeking more girth
- Glass is always firm: no give or flexibility; users accustomed to softer silicone may find the rigidity takes adjustment
- No vibration or powered function: purely manual use
NS Novelties Firefly Heart Compared With Other Glass Dildos
 NS Novelties Firefly Heart
|
 Glas Sweetheart
|
 Pipedream Icicles No. 5
|
 Fifty Shades of Grey Drive Me Crazy
|
|
| features |
|
|
|
|
| price | From $62 |
From $39 |
From $39.99 |
From $14.80 |
| users | 159 | 144 | 103 | 70 |
| our rating |
4.8
|
4.5
|
4.3
|
4
|
| power | None | Hand | Hand | Hand |
| material | Borosilicate Glass | Borosilicate Glass | Glass | Glass |
| waterproof | Yes | Yes | Yes | Yes |
| brand | NS Novelties | Glas | Pipedream | Fifty Shades of Grey |
| type | Glass heart dildo | Glass heart dildo | Glass wand dildo | Curved glass dildo |
| alergens | Phthalate-free - Non-porous | Phthalate-free - Non-porous | Latex-Free, Phthalate-Free | Latex-Free, Phthalate-Free |
| design |
4.7
|
4.6
|
4.5
|
4.3
|
| ease of use |
4.6
|
4.7
|
4.6
|
4.2
|
| orgasm |
4.6
|
4.5
|
4.5
|
4.1
|
| quality |
4.9
|
4.7
|
4.6
|
4.2
|
| noise | Whisper Quiet | Whisper Quiet | Whisper Quiet | Whisper Quiet |
| ease of clean | Easy | Easy | Easy | Easy |
| warranty | 1 year | 3 years | 90 days | None |
NS Novelties Firefly Heart Review: Verdict
The NS Novelties Firefly Heart is one of the most genuinely fun glass dildos available at its price point. The glow-in-the-dark effect is the obvious draw, but the borosilicate construction, all-lube compatibility, temperature play capability and three-bead curved shaft make this a capable toy beyond the novelty feature. Handle the heart-shaped base with care. At around $45, it’s exceptional value for a handmade glass dildo.
Who Should Buy the NS Novelties Firefly Heart?
Buy it if:
- The glow-in-the-dark feature is specifically appealing – it is genuinely distinctive and photographically interesting for partner play
- You want an all-lube-compatible borosilicate glass dildo at an affordable price (around $45)
- Temperature play is a priority: glass heats and chills quickly and retains temperature well
- The three-bead curved shaft texture is what you are looking for – it delivers a sequential bead-like sensation different from a smooth dildo
- You want a flared-base anal-safe glass toy with vaginal capability in one toy
Skip it if:
- You need more than 1.34 inches of diameter – the Firefly Heart is average girth and may not satisfy size enthusiasts
- You prefer a flexible toy – glass is always fully firm; there is no give
- You need powered vibration – this is a purely manual toy with no motor
- Budget is not the priority and you want a premium glass construction – the Icicles or Glas brand at a higher price deliver more refined handblown quality
Mistakes to Avoid With the NS Novelties Firefly Heart
- Charging indoors under artificial light only. The phosphorescent glow is significantly brighter and lasts longer when charged in direct outdoor sunlight. Indoor bulbs can charge it but the effect will be noticeably weaker. Charge outdoors for 20-30 minutes before a session.
- Using ice directly on the glass for temperature play. Rapid temperature change from ice directly on glass can create uneven stress. Use cold water instead – fill a bowl or run under cold tap for 1-2 minutes for a safe, effective chill.
- Storing without padding. The heart-shaped base is the thinnest point of the toy and the most vulnerable to impact. Do not store loose in a drawer or bag. Always use a padded pouch or padded case and store away from other toys that could knock against it.
- Rushing the bead sensation. The three bead-like curves create their best sensation on slow, deliberate withdrawal during anal use. Moving quickly through them loses the sequential sphincter sensation that is the primary textural feature. Take time with the withdrawal pace.
- Assuming oil-based lube is always fine. Oil-based lube is compatible with glass but NOT with latex condoms or silicone toys used in the same session. If you are combining the Firefly Heart with other materials, confirm lube compatibility across everything in use.
| 👉 Name: | NS Novelties Firefly Heart |
|---|---|
| ⚙️ Features: | Annealed borosilicate glass, heart-shaped flared base, three bead curves, glow-in-the-dark phosphorescent, temperature play, all-lube-compatible |
| 📁 Type: | Glass Dildo |
| 🛠️ Materials: | 100% borosilicate glass (non-porous, hypoallergenic, boil-safe, body-safe) |
The NS Novelties Firefly Heart Lowdown – What You Need to Know
Beginner to intermediate users. The 5.2-inch insertable length and 1.34-inch diameter are accessible for most experience levels. The glass firmness and bead-like curves are genuinely distinctive. Best suited for users interested in glass texture, temperature play and the glow-in-the-dark feature. Equally suitable for vaginal G-spot and anal use given the flared base.
Plain discreet boxes, billed as MSNV Inc. Domestic delivery 2-7 days via USPS. 1-year warranty with valid receipt. Note: all sales are final for intimate products – confirm the size suits you before purchasing.
100% borosilicate glass: non-porous, hypoallergenic, phthalate-free. Compatible with all lube types. Oil-based lube is compatible with glass but not with latex condoms or silicone toys – confirm your setup if combining with other materials.
100% boil-safe: boil for full sterilization. Wash with warm water and mild soap or toy cleaner after every use. Store in the included soft pouch or a padded case – do not store loose. The heart-shaped base is the thinnest point; a knock or drop can crack it. Keep separate from other toys to avoid impacts.
The Firefly Heart contains phosphorescent material in the glass that absorbs light and re-emits it as a green glow in darkness. Charge it by placing it in direct sunlight (or under a UV light) for 20-30 minutes before use. The brighter the charge source, the longer and more intense the glow. In a dark room, the glow is visible for approximately 30-60 minutes before fading. It can be recharged as many times as needed with no degradation.
Yes. The toy has a flared heart-shaped base that prevents full insertion. This makes it safe for anal use. The flared base is wider than the shaft and acts as a safety stop. However, the heart-shaped base is notably thinner than the shaft and is the most fragile point of the toy. Handle it with care and store it in a padded pouch to prevent the base from cracking.
All lube types are compatible with borosilicate glass: water-based, silicone-based and oil-based. Glass is non-porous so there is no lube degradation concern. One important caveat: oil-based lubricants are not compatible with latex condoms or silicone toys. If you plan to combine this toy with latex or silicone materials in the same session, use water-based or silicone-based lube instead.
Yes – glass is one of the best materials for temperature play because it heats and chills quickly and retains temperature well during use. Run the toy under warm water for 1-2 minutes to heat it, or cold water for the same time to chill it. Do not use boiling water directly on it during play (reserve that for sterilization only) and do not use ice directly on the glass – use cold water instead to avoid uneven thermal stress.
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