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LOVE this suana. Maya and Norse Steam Team were amazing to work with!
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Real Fyre Nero Marquina G23 Fyre Spheres: a black marble look instead of logs
The Real Fyre Nero Marquina G23 Fyre Spheres is a vent free set of ceramic fire spheres that replace logs. Each sphere is 4 inches across, with a black marble look and pale veining. Named for the Spanish stone, the finish suits a room with marble. It is vent free, which means the burner burns clean enough to run with the damper closed, so the heat stays in the room. It still goes inside a real fireplace, and vent free logs are not allowed everywhere, so check your local code first. It comes in an 18 or a 24 inch set. Measure your firebox at the front, at the back, and front to back, and if you land between two sizes, take the smaller set.
The spheres are ceramic, made to sit in the flame, and the burner wraps its flame around them. The price is for the spheres only. On the page you pick natural gas or propane and add the G23 burner. You also pick how it lights: with an on and off remote, or with a remote that sets the flame height plus electronic ignition. A Fyreback, a steel panel that stands behind the fire, is optional. Prefer a white marble look? See the Real Fyre Carrera Marble G23 Fyre Spheres. The Real Fyre Nero Marquina G23 Fyre Spheres ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Specifications
SKU: US4-18-NM | US4-24-NM
Sphere Sizes
- 4 inch
Set Sizes
- 18 inch
- 24 inch
Compatible Burner
- G23 Vent-Free Burner
Vent-Free Burner Sizes and BTU Ratings
BTU Rating = BTU x 1000
BTU Rating = BTU x 1000 (G8E-16″ = 20,000 BTUs)
FAQ
What makes the Nero Marquina finish the designer pick?
It borrows its name and look from the famed Spanish black marble: a deep black ground crossed with pale veining, so each sphere reads as a turned stone object rather than a solid color. In the Fyre Spheres range it is the luxury option, the finish specifiers reach for when the fireplace is meant to be a jewelry moment in the room.
Are the spheres actual marble?
They are engineered fireplace media wearing a Nero Marquina marble finish, built robust enough to sit inside a working flame, which quarried stone is not asked to do. You get the veined black-marble look with hearth-rated durability, in the same 4-inch sphere format as the rest of the Fyre Spheres family.
Which burner do these spheres pair with?
The G23 vent-free burner, in the width matching your set: US4-18-NM with the 18-inch, US4-24-NM with the 24-inch. The pairing is fixed by design, because the G23’s flame pattern is engineered to envelop the spheres. Choose fuel and controls when ordering from the gas fireplace burner range.
What does installing the full setup involve?
A professional gas connection for the G23 burner, sphere placement per the burner instructions, and, because this is vent-free equipment with an oxygen depletion sensor, a check that local codes allow ventless products in your area. From there the Nero Marquina set needs no flue modifications, which is much of the appeal for remodels.
How is Nero Marquina different from the Epic Black spheres?
Both are black, but they aim at different rooms. Epic Black is a uniform matte black: stark, graphic, minimalist. Nero Marquina layers white-on-black veining across each 4-inch sphere, adding movement and a natural-stone pedigree that suits polished, high-end interiors. If the surround features marble, brass, or lacquer, the veined finish is usually the stronger match.
What does the flame actually do around the spheres?
The G23 burner produces a dynamic pattern that envelops the spheres rather than rising behind them: flame threads between the Nero Marquina orbs and wraps their veined surfaces, so the composition looks lit from within the arrangement. It is a very different picture from a log fire, closer to sculpture with fire moving through it.
Will a sphere fire smell like gas when it burns?
A properly installed set should burn essentially odor-free, since the G23 is a clean-burning vent-free system. What you may notice is whatever the room air carries: dust after months idle, paint fumes, strong candles, because a ventless burner draws its combustion air from the room. Keep the Nero Marquina spheres and burner dusted each season and light-off stays clean.
Vent-Free Gas Logs Guide
The Warmth and Charm of a Wood Fire — No Venting Required
Real Fyre Vent-Free systems bring you the warmth and charm of a wood fire without the need for venting your fireplace. They are available in a wide variety of hand-crafted, beautifully detailed logs — as well as many contemporary glass fire styles. Most feature active natural flames and glowing embers designed to magnify the beauty of your hearth.
Why Choose Vent-Free?
A vent-free system lets you enjoy your fireplace without the need for venting. Every Real Fyre set is designed to magnify the beauty of your hearth — pick a traditional log style or a contemporary glass fire and enjoy the glow.
- No venting required for your fireplace
- Hand-crafted, beautifully detailed log styles
- Contemporary glass fire styles for a modern look
- Active natural flames and glowing embers on most sets
Hand-Crafted Logs, Natural Flames
Each Real Fyre log set is hand crafted and beautifully detailed, from sculpted bark to distinctive charring. Most sets pair active natural flames with a bed of glowing embers, so the fire looks as inviting as it feels.
Every series below has its own character. Compare them and pick the one that fits your hearth and your style.
Choose Your Series
Charred Series – G10
Lively flames and a large ember bed highlight these handcrafted logs.
Evening Fyre Series – G18
Sculpted and hand-painted with distinctive charring on the front log, mimicking a wood fire.
Golden Oak Series – G9
Dancing flames and an ember bed, featuring an innovative reflective panel.
Valley Oak Series – G8E
Simple in design and function — ideal for smaller fireplaces.
Contemporary Series
Give your fireplace a sleek, modern look with glass fire styles.
Inspiration Gallery
Real Fyre vent-free sets at home in real hearths — browse a few favorite looks.
Bring Home the Warmth of Real Fyre
Pick your series, then choose your set size and options right on the product page — with free shipping and no sales tax (except WY).
Shipping / Freight / Return Info
Same-Day / 24 hour shipping
Same-Day/24 hour shipping - If we have the product in stock, we can ship same day if ordered before 12pm Monday - Friday (CST).Freight Claims Policy
- Open and inspect the order while the delivery driver is present. If delivery driver does not provide sufficient time to do so, please notate the delivery receipt.
- By signing the delivery receipt without noting any damage or missing items, you confirm that your order arrived complete and in excellent condition.
- Record any damage or missing pieces directly on the delivery receipt.
- Do not discard damaged item(s) or any original packaging. For severe damage, write “Refused due to damage” on the delivery receipt and contact us immediately.
- Report any damage within two business days, including delivery details and photos showing the issue
- Damaged item(s) must be returned within 30 days. Failure to return them will result in a charge to the original payment method.
Return Merchandise Authorization Policy
- Submit your return request within 30 days of delivery.
- You will receive an email within 1-2 business days confirming whether your return request has been approved or denied.
- Please also note that a 20% restocking fee may apply to approved returns
- If approved, you will receive an itemized Return Authorization, return shipping labels (if requested), and detailed instructions within 1–2 business days
- From the date this email is received, you will have 14 days to return the product.
- Once our distributor receives and inspects the returned item(s), your refund will be issued within 1–2 weeks
- Items returned outside of this process or time frame are not eligible for a refund.
Customer Reviews
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What Our Customers Say
D
A sauna turns your garden into a spa oasis. We debated it for a while, but after renovating our house, we pulled the trigger and bought a sauna from Norse Steam and Maya. She was always super responsive and helpful throughout the process. Don't kid yourself, getting a really nice sauna is not that easy. Sizing and heating need to be figured out, as does the building, but we have always had a helpful partner on our side. She never upsold us on anything we didn't need, and we got some nice freebies when the sauna was delivered. And now we can really enjoy every moment in our garden.
KF
I'm really happy with my sauna purchase. Maya gave above and beyond excellent customer service. She wasn't pushy and gave impressive followup after the delivery to make sure everything was just right.
DE
I enjoy my FD2 Sauna with Red Light, Infrared and radiant heat. Use it 5x a week and my post workout soreness is minimal and sleep great. Maya at Norse Steam was excellent to work with.
B
We purchased the 3-person sauna for our outdoor garden. We chose the cube sauna for the aesthetic and could not be happier.
I assembled by myself except for the 2 large panels (requires a few people). Instructions were good - took me two partial Saturdays to complete and a few hours to unpack and organize in advance of assembly. Had my elec. add a NEMA enclosure on the back for the controller and power for lights and a 2nd panel for the wireless control.
Customer service was excellent
MP
Awesome Sauna and Awesome Company and Experience purchasing it from Maya!
After much research I chose the Finnmark FD-2 and it has met and exceeded all my expectations! Easy to assemble and it functions great - just as advertised. I highly recommend it for home use!
EA
Recently purchased the Finnmark one person after much research. Extremely happy with it and the ordering process. Maya was very responsive and helpful during the process and keeping us updated while we waited for shipment. There were several places I could have ordered this, but i chose Norse Steam based on the communication and customer service which was fantastic. The shipment was also excellent. The setup was pretty seamless for two people - but the best part is the sauna experience 10/10
G
Maya is amazing - super helpful and responsive. Looked at many stores, these guys have the best prices and service. Highly recommend
GR
Norse Steam, and specifically Maya, were extremely helpful as I was making the decision for our Sauna. I was able to get all of the necessary details to make a decision as construction was happening in my backyard to make space for it.
We absolutely love the CL7G. It is extremely comfortable for 6 people (can fit more less comfortably). The Thermory Spruce and Aspen in the interior smells great. The lighting is lovely. We paired the CL7G with the Harvia Spirit 10.5kw.
RS
Had great experience shopping at Norse Steam for the new heater. They had very good deal, with rocks. Customer service was good, and responded very fast with my questions. Received the heater, and it looks good, and the quality seem to be great. Will install soon, and am very excited to start experiencing sauna the way it ment to be
O
positive purchase experience - Harvia Legend 150 SL woodstove
thanks Norse Steam for flawless transaction - I got instant replies on my questions, received competitive price on the wood stove and got it delivered within two weeks!
Can highly recommend Norse Steam for others.
JR
Smoking Hot Tub!
I got the Norse Steam SaunaLife wood-fired hot tub, the S4N model, and its been seriously great. It heats up quicker than I expected, usually around an hour and a half, and once its hot, it stays that way for a good long while. The wood-fired system is simple to use, and honestly kind of fun.
The tub itself feels solid and well put together. The thermo-spruce exterior looks beautiful in person, and the fiberglass interior is smooth, deep, and easy to clean. Its the kind of setup that just works without a bunch of fuss, which I really appreciate.
Also, the team at Norse Steam was genuinely great to work with. Super helpful, quick to respond, and made the process really easy from start to finish. It felt like they actually cared that I was happy with it. The tub has totally become a go-to way to unwind, and I wouldnt change a thing.
S
Maya was so knowledgeable and responsive
Maya was so knowledgeable and responsive. She helped me understand the product options and found a fantastic solution that fit our needs. Her follow through was very helpful and made us comfortable with our decision. We are extremely happy with the end result!
W
Great service
I recently purchased the Harvia Club sauna equipment, and I am thoroughly impressed with both the product and the customer service experience. The heaters robust performance and durable stainless steel construction make it ideal for larger sauna spaces, providing consistent heat and a relaxing environment. Its compatibility with advanced controls ensures a personalized sauna experience every time.
The customer service team was exceptional, prompt, knowledgeable, and helpful throughout the purchase process. They ensured smooth delivery and provided clear guidance on installation and operation. Overall, I highly recommend Harvia Club for anyone seeking premium-quality sauna equipment backed by excellent support!
BT
Great Sauna & Purchase Experience
Great experience purchasing Finnmark FD-2 from Norse Steam. Good communication and easy to assemble. Temperature increases quickly (30 minutes or less to 140) and maintains well. So far this has been a great purchase.
M
Great sauna and great customer service
We purchased the Finnmark SD-1 sauna. Maya was extremely helpful with the purchase. We had an issue with the sauna not reaching the maximum temperature, and Maya connected us with the appropriate technician that explained how to correct the issue. The sauna now heats to the maximum temperature (170 degrees) in less than an hour, and it is a great unit. We are very happy with it, and we would definitely purchase from NorseSteam if we needed any other items.
JK
Sauna Review
I recently purchased a sauna from Norse Steam, and I couldn't be more impressed with the entire experience. From start to finish, their customer service was exceptional, and Maya deserves special recognition for her outstanding support!
Maya was incredibly knowledgeable and patient, answering all my questions about the sauna features, installation process, and maintenance. She went above and beyond to ensure I selected the perfect model for my home. Even after the purchase, Maya followed up to make sure everything was running smoothly and that I was satisfied with my sauna.
The sauna itself is top-notch beautifully designed, durable, and easy to use. It's clear that Norse Steam takes pride in the quality of their products and their commitment to customer satisfaction.
If you're considering a sauna, I wholeheartedly recommend Norse Steam. With their excellent customer service and high-quality products, you're in great hands. Thank you, Maya, and the entire Norse Steam team for a fantastic experience!
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