Blue Family


Blue Diamond Speaker Cable

Speaker Cables  >  Blue Diamond
Blue Diamond Speaker Cable
UK retail price per single metre
Purchase example: 2.5m stereo pair would contain 5 single metres (2.5m to each channel). This also allows you to order uneven lengths e.g. 2m left channel/3m right channel. So, 2.5m pair = 5 single metres x £240.59 which is a total of £1202.95
HiFi World 5 Globes
HiFi Plus Cable of the Year 2010
HiFi Pig - Outstanding Product
HiFi Plus Innovation Award 2021
Blue Diamond Speaker Cable

Tellurium Blue Diamond (formerly known as Green) is the companion cable to Tellurium Ultra Black and is probably more suitable for slightly bright systems as they have a very slight “mellowing” effect. This can be particularly beneficial with class D and T amplifiers.

This cable has been significantly improved from its original well reviewed green jacketed version. The original green jacketed design had a ridiculously long burn in time before it showed its silky best and displayed what it could do. Often its “un burnt in” performance was so far from what the fully burnt in version was capable of that it was like two different cables.

We redesigned the cable to keep its top performance but slash the burn in time and as a consequence its overall performance has improved too.

Gold Banana Connector
Gold Spade Connector

Note: All Tellurium Q Speaker cables can be Bi-wired by adding an extra cable during manufacture.

Performance Profile
Blue Family
Warm and forgiving for systems with a slight edge or for those who like a more smooth laid back presentation. Blue and Ultra Blue are especially good for AV and home cinema
Black Family
Smooth, fine detailed and great resolution while actually reducing apparent harshness. Music is presented as a coherent, organic whole, with a jaw-dropping sense of realism and naturalness.
Silver Family
Totally uncoloured, acting as a wide open channel sounding unforced, vivid and dynamic with phenomenal resolution, transparency and natural tonal colours. All this while sounding extremely analog and coherent, from the exceptional top end extension to bottom with finely detailed, separated bass notes.
Reviews and User Comments

“Tracing the thread of individual instruments through a track, while not difficult, was given another dimension of clarity and distance between each player in the mix by moving up to the Blue Diamond. Spectral bloom, decay and shimmer off cymbal and high hat took on further spatial depth, as did supporting horns placed back further in the z-axis of on certain mixes. Vocals and overdubs popped with crisp, clipped intonation on cuts like “Godonimada Jira,” and the sound stage became larger with the scale of instruments and vocals taking on more life-sized proportions within the context of the 3D information available from mic placement”

HiFi Pig

“The Blue Diamond’s refinement addressed vocal clarity, projection and body impressively. Decay of strings and timbre of the acoustic guitar led into spatial awareness including crowd interaction and theatre perspectives. Yet what I found really intriguing was how the clever top end functioned….The point is that the Blue Diamonds relished those fast transients and delivered them with realism and sure-footedness, with that anticipated sharp “crack” delivered rather impressively, equally so with deep articulate bass laden with well defined and executed timbres and textures ..”

– HiFi Pig, 2014
HiFi World

“The Green cables could be described as ‘sweet’. That doesn’t mean cloying or that they throw any sort of veil over detail, far from it. These, warm, very friendly cables broaden the sound stage and provide, for the first time, an onion skin array of musical detail. That is, bass exhibited a multi-tonal depth and vocals displayed a complexity unheard by both the Blue and Black cables. …ideal for any slightly bright system”.

– Paul Rigby, HiFi World, 2010
HiFi Plus

“.. The green is a significant step ahead of most cables at the price in terms of communicating those nebulous qualities we think of as musicality and performance…”

– HiFi Plus, Issue 75, 2010
Glyn Fuller

“Hi Geoff, Blue Diamonds arrived 6 days after order placed that’s pretty good service thank you. They are a bit cranky to run in but after about 30 hrs + 2 hits of your burn in disc they seem to have settled down. No doubt they will open up a bit more yet. These cables replaced Shunyata Cobras which had replaced top of the range (at the time) Cardas (purchased 2nd hand).These cables have very high reputations the Cardas being approx 3 or 4 times as expensive (ie as new) and the Shunyatas approx twice as expensive as the cables I purchased from you. So tough competition you would think?

Well to these quite experienced ears the Tellurium [Q] cables are far superior in every Hi Fi parameter that I can think of and that would be enough of itself for your cables to be very good value however your cables are also in another league entirely in the natural way they portray music. I am sure your more expensive cables offer further performance but as I listen I do not have a sense of anything lacking there are no that’s great BUT or I wish there WAS moments so count me as a very satisfied customer.”

– Glyn Fuller, Port Macquarie, NSW, Australia