Frequently Asked Questions


  Dalle De Verre Rondels



Do you still make color “X”?

Probably. There are very few colors that have been retired. We make around 22,000 colors and textures so we probably have your color or will be producing it soon.


Where can I purchase Kokomo Opalescent Glass?

If you are interested in purchasing sheet art glass or retail, please view the Sheet Glass section of this website, or feel free to call our retail shop for person to person assistance in selecting the perfect color(s) for your project. We sell to distributors and direct to studios, many individuals find that they can purchase from our distributors located close to them and save on shipping costs. Please see our Distributors List or Contact Us so that we may assist you best.


Do you sell samples?

Yes! With so many colors to choose from making a decision is not always easy. See our Samples section to purchase a 2” x 3” sample at a nominal charge to cover shipping. If you need a larger sample size, we also have 4” x 4” and 6” x 6” sizes available for a small fee to cover our costs. You will also find two sample boxes one of textures, and one of a group of approximately 250 our most popular colors and textures. We have knowledgeable and helpful staff available to assist you in matching colors, you are welcome to send us a piece to match at 1310 S. Market St., Kokomo, IN 46902, Attn: Tom Giles, Jack Paul, or Kelly Ryan.


Is your glass fusible?

We do not sell our glass as fusible, you may find that it works for you.


Can you cut glass to my specifications?

Yes! We are happy to custom cut your sheet glass art or other orders and can cut straight cuts, circles, or special items. Contact Us directly for more information and quotes.


Shipping Information:

We send most all our shipments with Federal Express and offer you the options of Over Night, Second Day, Standard Ground, and SmartPost. When your shipment arrives, please look it over immediately. If there is an issue, please Contact Us.

UPDATE: Any glass over 20 inches must be sent in a crate. We have noticed a higher rate of breakage in standard boxes when items exceed this dimension, and in order to better serve you we are making this change. There is a $35 crate fee for items shipped in crates via FedEx. This includes anything up to 32x16, above that size must be sent via freight.

Freight shipments include a $35 to $65 crate fee, a $5 skid charge, plus shipping. Freight shipments vary depending on size, weight, and destination, and will be quoted when the purchase has been processed.

We do not send via USPS unless requested specifically by a customer.


Shipping Guarantees:

We guarantee very specific kinds of items that are shipped via FedEx. We will replace 8x16, 16x16, half head packs, and jewels. We do not guarantee any items sent via USPS. If there is an issue, please Contact Us.


About Glass Density

At KOG the term “density” refers to the amount of light that any give sheet of glass will transmit. All of our standard opalescent color combinations are available in a variety of densities tosuit virtually any application. Our most popular colors are offered for sale under our Sheet Glass section of this website. Many additional colors can be found under the Samples section. If you are looking for a specific color, please feel free to Contact us for additional colors and availability.


Types of Sheet Glass

  • Opal: Glass that is not transparent, although some sheets may contain relatively transparent areas.
  • Streaky: Contains two or more colors mixed together and may or may not be transparent.
  • Cathedral: Single color transparent glass.
  • Opalume: Single color non-transparent glass


Dalle De Verre

What is Dalle De Verre Glass?

Dalle De Verre, french for slab glass is made from the same pots as our stained glass. It is poured into a 12” x 8” mold to a thickness of approximately 1”. Projects containing Dalle De Verre will involve breaking (usually with a hammer) or cutting the slabs into pieces and placing them in a mold box then placing epoxy between the pieces in a very careful manner. Feel free to contact us about using our dalles in your projects.


Can I use Dalle De Verre instead of billits?

We do not recommend using our dalles as billet for casting as they can be made using cullet and greatly affect the outcome of your project.


Do you have Samples?

Yes! We offer a sample box of our Dalle De Verre glass which contains 2” x 3” pieces of the actual dalle slabs. These pieces are rough cut and may contain sharp edges.



What are Rondels?

A mouth blown glass art piece that has been spun into a circular shape, often irregular. Sometimes incorporated into leaded glass artworks. Rondels are fun, colorful and exciting hot glass products that you can use to add interest to your stained glass creations. They are round and can be in sizes from 2” to 20” and are available in a huge selection of colors and styles to suit your needs. You can see many examples of finished installations in our Gallery.


What Types, Styles and Sizes do you have?

Rondels are available in two types, Spun and Blown. We have sizes ranging from 2” to 20”. We have tried to showcase the wide variety of styles from the Optic, Wacky Wrap, Hot Wrap, Murrini, Frit Swirl, Feathered, and solid colors for sale in the Rondel section of this website. If you need something special, Contact Us.


What is the difference between a Spun and Blown Rondel?

At first blush, they may appear very similar. A blown glass art rondel is as it sounds, glass is gathered and blown into a bubble. That bubble is then piereced and opened into the flat shape then broken off leaving a thicker portion at the center called a punty. Blown rondels are made from both clear glass and clear glass with a color overlay called flashing and are available in sizes from 3” to 20”. A Spun rondel is always made from colored glass, unless it is supposed to be clear, and is shaped from a gather of glass then formed with a “footing” tool to the correct size. Spun rondels have a punty, are thicker than blown rondels, more economical, only available in sizes 2” – 4” and have a standard color pallet that you can find under our Rondel section of this site. Other colors can be made with a minimum order of 20 rondels per color, please Contact Us for a price quote and availability. Both Spun and Blown rondels can be incorporated into stained glass projects with lead cane or copper foil.


Do you have samples?

Yes! We offer a Rondel sample set that contains one 3” Blown rondel, 3” Spun rondel and samples of our standard rondel color pallet available in the form of 2” x 3” sheet glass samples and is available in our Samples section of this site.

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