How can you tell high-quality chandelier crystal?
It’s a common question from interior designers and other clients inquiring about modern chandeliers and lighting fixtures when shopping for the right lighting. There are many indicators of quality in a modern chandelier, but the quality of crystal in a chandelier or lighting fixture is a good starting point for interior designers regardless of whether the lighting application is home or hospitality.
Our industrial lighting aesthetic largely incorporates raw industrial pipe and glamorous high quality Bohemian crystal – to provide a complimentary unified whole – so a heavy emphasis is placed on this high quality crystal to provide that signature Michael McHale Designs industrial chic beauty. Interior designers and other subject matter experts place heavy emphasis on crystal quality when making the purchasing decision for a modern chandelier.
What’s crystal made of?
At root, crystal is comprised of two basic ingredients — silica (sand) and lead. Lead is added to the glass in order for the light passing through to refract. Leaded glass contains from 5-20% lead content. Once the lead content gets above 20%, it is considered crystal. The maximum lead content for crystal is about 30%, which allows for greatest refraction of light. While that lead content tends to make crystal more fragile, this is less of a problem for chandelier crystals than it is for other types of crystal (decanters, stemware, etc.) which is regularly handled. Once the chandelier crystal is in place, fragility shouldn’t be much of a problem (assuming that you’re not regularly swatting insects or bats anywhere near your chandelier).
Lead content is only one of the factors that indicate crystal quality. The care taken during the manufacturing process of crystal is perhaps even more important than the raw ingredients in determining crystal quality.
What to watch out for:
Obviously, the raw ingredients are heated to extremely high temperatures. Left to itself, crystal will cool like a cake: the outer part cools quickly, and the inner core takes longer to dissipate heat. That differential in temperature means that the inner parts of the crystal cool off later than the outer parts, and that can leave very fine striations in the crystal. You probably wouldn’t notice them on first glance — you might even mistake them for fingerprints. But those tiny striations can distort the light passing through the crystal. Once you notice them, they will be hard to ignore.

The other thing to watch out for is bubbles. Cheaper crystal can often have a tiny bubble or two trapped inside. High quality modern chandeliers incorporate high quality crystal to ensure optical purity.
Optical Purity
When crystal is free of flaw such as these, it is called “optically pure” meaning that light is able to pass through the crystal without being distorted by flaws. The manufacturer will control the manufacturing and cooling process so that each crystal cools in a controlled way. Quality inspectors will ensure that there are no bubbles or other flaws which would compromise quality.

All of the crystal used in Michael McHale Designs industrial chic chandeliers and modern lighting fixtures is optically pure.
What about Swarovski Crystal?
Chances are, if you’ve heard of any “brand” of crystal, it’s Swarovski. My wife and I were recently on our honeymoon, and had a layover in Singapore. The first name we saw when we came out of the airport was Swarovski. They seem to be everywhere these days.
At Michael McHale Designs, we love Swarovski crystal. It is without a doubt the finest crystal available. The only downside to Swarovski crystal is, of course, the price: Having a chandelier with 100% Swarovski crystal can almost double the price of the chandelier or fixture. If price is no object, or if you have a particular interest in the resale value of the piece, Swarovski is the way to go.
Most of our modern chandelier, sconce, and lamp customers opt for our optically pure Bohemian crystal. This crystal is optically pure – just without the Swarovski brand name. It would take a very sophisticated eye to tell the difference.
A note on our colored crystal option in chandeliers and lighting – when it comes to colored crystal, Swarovski has no peer in terms of clarity and brightness. So if you order colored crystal from us, it will always be Swarovski.
Michael McHale designs aims for the highest quality in all of our industrial chic modern chandeliers and lighting fixtures – and we’re happy to answer any of your questions, so if any inquiries come to mind – just contact us.