"It's visually stunning, and the sound is just incredible. It reverberates in the room much longer than my other bowls."
The Blue Moon Bowl is a 10.25-inch bell bronze singing bowl made in India. It carries a deep blue colorization produced through a controlled chemical treatment applied directly to the bronze surface. The interior face shows a full lunar cycle and a Metatron's Cube symbol, rendered as a patina relief as part of the same treatment process.
At this diameter, the bowl produces a fundamental tone in the third octave. It is a full, low-mid tone with weight behind it, and it sustains for a long time once the resonance is established. The rim is smooth and wide, and rim play on this bowl is one of the more effortless in our collection at this size.
The six items below cover the specific properties of this bowl in detail.
The blue of the Blue Moon Bowl is achieved through a controlled chemical treatment applied directly to the bronze surface. The process introduces specific compounds to the metal that react with the copper content in the alloy, producing a stable colorization bonded at the surface level of the metal.
The color is a property of the metal surface itself, produced by a chemical reaction rather than applied as a coating. The bowl can be played daily, including rim play, striking, and water play, and the color holds up with normal use.
The colorization is produced by a chemical reaction with the bronze. It is bonded at the surface level of the metal.
The interior of the Blue Moon Bowl shows a full lunar cycle, with eight moon phases arranged around a central Metatron's Cube symbol. These patterns are produced as part of the colorization treatment. The design is created as a patina relief: specific areas of the bowl are treated differently during the colorization process, which produces a visible contrast between the deep blue field and the lighter pattern within it.
The design is integral to the surface of the metal. Because every Blue Moon Bowl is made by hand, no two are identical. The character and contrast of the pattern varies from bowl to bowl.
At 10.25 inches, the Blue Moon Bowl has a wide, smooth rim. The width of the rim, combined with the mass of the bowl at this diameter, produces a tone that builds gradually and sustains for a long time once the resonance is established. You can hear this in the recordings below.
The fundamental frequency of this bowl sits in the third octave. It is a full, low-mid tone with real weight behind it. The overtones that develop during rim play layer above that foundation, and the sound shifts as mallet speed and pressure vary. Customers consistently describe the rim play on this bowl as one of the most effortless in our collection at this size.
The fundamental tone sits in the third octave, which is a register you feel in your chest as well as hear.
Recorded in our studio. This is sustained rim play at medium pressure. The recording captures the acoustic character of the bowl accurately. The physical vibration at this size is something you experience in person.
The Blue Moon Bowl is made from CuSn20 bell-metal bronze, an alloy of copper and tin in a 4:1 ratio. This composition has been used for centuries in instruments designed to produce sustained, complex resonance. The high tin content increases the hardness and density of the alloy, which directly affects the acoustic properties of the finished bowl.
When a handmade bowl is struck or played on the rim, the slight asymmetry introduced by the hammering process causes the bowl's vibrational modes to split. Two slightly different frequencies emerge simultaneously from the same instrument. The interference between these frequencies produces beat frequencies, which are periodic amplitude variations in the 1 to 8 Hz range. This is the acoustic behavior that gives handmade bronze bowls their characteristic pulsing quality.
The Blue Moon Bowl — feature demonstration. Rim play, strike, and sustained resonance.
A bowl of this diameter and mass, when played at full resonance, produces vibrations that are perceptible through touch. The fundamental frequency of the Blue Moon Bowl falls in the range that activates Pacinian corpuscles, which are mechanoreceptors in the skin and deeper tissues that respond specifically to vibration in the 40 to 400 Hz range.
When you hold the bowl in your palm during rim play, the vibration travels directly through your hand and into your arm. Customers consistently describe this as one of the most immediately noticeable qualities of the bowl.
"This bowl seems to like being held while playing better than being on a cushion. The singing is better when holding it every time." — Kevin B., Verified Buyer
Many colored singing bowls are painted, lacquered, or coated. The Blue Moon Bowl's color is produced through a controlled chemical treatment that reacts with the copper in the bell bronze alloy, creating a stable colorization bonded at the surface level of the metal.
The color is a property of the metal surface, produced by a chemical reaction. It holds up with normal use and develops character over time as the bowl is played and handled.
Bell bronze is a living material. The alloy continues to develop over time as it oxidizes and is played. The acoustic properties of a well-used bronze bowl mellow and deepen with age — the harsh upper partials that can be present in a new bowl gradually smooth out, and the fundamental tone becomes more prominent relative to the overtones.
The blue colorization of the Blue Moon Bowl develops with age. The chemical treatment that produces the initial color continues to evolve slowly over time as the bowl is used and handled. The acoustic character of bell bronze also changes over years of use, as the metal responds to regular vibration.
10.25 inch • Bell Bronze • Handmade • Ships Immediately
| What's Included | Description | Value |
|---|---|---|
| The Blue Moon Bowl (10.25") | CuSn20 bell-metal bronze, permanently colorized, patina relief moon phase pattern, handmade in India. Second-octave fundamental. | $995 |
| Premium Striker | Professional-grade mallet for striking. Produces a clear, full fundamental tone on contact. | Included |
| Rim Play Mallet | Wrapped mallet for sustained rim play. Optimized for the smooth rim of the Blue Moon Bowl. | Included |
| Cushion | Traditional ring cushion for stable placement during play. | Included |
| Lifetime Guarantee | Every Ohm Store bowl is guaranteed for life. No questions asked. | Included |
| Your price today | $796 $995 |
Extended rim play session — showing the sustained tone and acoustic development of the Blue Moon Bowl.
The Blue Moon Bowl's second-octave fundamental pairs well with smaller 4th-octave bowls for layered acoustic sessions.
The deep blue colorization and moon phase patina relief make this bowl a visually distinctive instrument as well as an acoustic one.
The smooth, wide rim of the Blue Moon Bowl at 10.25 inches produces one of the most effortless sustained tones in our collection.
Bell bronze is one of the most durable acoustic alloys ever developed. The acoustic character improves with age and regular use. The Blue Moon Bowl comes with a lifetime guarantee.
"It's visually stunning, and the sound is just incredible. It reverberates in the room much longer than my other bowls. Highly recommend."
"This bowl is beautiful, the blue is striking. What's interesting to me is that this bowl seems to like being held while playing better than being on a cushion. I tried several different cushions but the singing is better when holding it every time. It has cool underlying tones when struck which I love and its great for grounding."
"I love buying my singing bowls from Ohm store. I have 2 more sizes to get and I will complete my set."
"Great sound, playing them everyday!"
The specific properties that distinguish the Blue Moon Bowl from alternatives
| Property | Blue Moon Bowl (Handmade Bell Bronze) | Machine-Made / Crystal Bowl |
|---|---|---|
| Alloy | ✓ CuSn20 bell-metal bronze | ✗ Variable / quartz crystal |
| Colorization | ✓ Permanent chemical treatment, bonded at the metal surface | ✗ Painted or coated surface |
| Mode Splitting | ✓ Yes — hand-hammered asymmetry | ✗ No — machine-pressed uniformity |
| Beat Frequencies (1–8 Hz) | ✓ Yes | ✗ No |
| Vibrotactile Stimulation | ✓ Yes — 40–400 Hz range | Varies / different range |
| Sound Improves With Age | ✓ Yes — bronze mellows over time | ✗ No |
| Lifetime Guarantee | ✓ Yes | ✗ Rarely |
Every bowl from The Ohm Store is guaranteed for life. Bell bronze is one of the most durable acoustic alloys ever developed — these instruments are built to last beyond your lifetime. If your bowl is ever damaged or develops a defect, we replace it. No questions asked.
10.25 inch • Bell Bronze • Permanently Colorized • Ships Immediately