From Rande Bly–Maybe I can be some light on the subject of June Riccio’s Persian Blue Vase with Citron Yellow threading.

June if I remember correctly I sold you this vase right about 4 1/2 years ago and I am sorry I was wrong about the threading being Citron when I sold it. If it was not you then I apologize to who ever got the same vase I made the mistake on. Nonetheless a lot of research and discovery came out of your vase and you are still the proud owner. Out of this sale Marshall and I were in discussion over the color of the threading. From original observations the threading was appearing to glow brightly under black light and having the appearance of a lighter shade of color than Bristol. The reason for this happening I explained in full detail in the previous e-mail. Marshall had records showing it was sold with Bristol threading. I claimed it couldn’t be because Bristol has no uranium content. Well this led to the discovery that Bristol can in fact come with a uranium content. I was willing to accept then that at least this was the Bristol Yellow with the uranium in it. As time went by I had the opportunity to examine the threading separated from a piece to find the color true to Bristol Yellow and to be the Bristol that did not contain uranium. As I indicated in the original listing it is hard to find these pieces without thread damage probably due to conflicting contraction and expansion rates. June’s piece had damaged threading also. I hate to say it but when acquiring a piece of this we may have to settle for some minor thread loss. If however you happen to find a piece in perfect condition we might consider paying a premium gladly. I know a few with some perfect pieces but they are treasuring them. So the threading has been identified by Record and by “color match” and we were able to identify it to the Bristol Yellow without the uranium content. Citron will also come in two shades of color. Once again one containing uranium and one not. They are CY-4 and CY-1 There is also Carbon Yellow. Carder had notations in his notebook regarding these five yellows. There is mention of Canary in Gardner but my information is showing it is not in Carder’s notebook. Now this is only my opinion but I have strong feelings Canary was a marketing name for Citron. The “Old School” term for yellow Vaseline glass is Canary and the nickname did carry from Europe to America following that particular color shade of yellow. It all seems to hinge over the uranium content. We in America like to call it Vaseline. Carder liked to use the term Pomona. In fact he used it in his Color names. Infamous Pomona Green, and a color called English Pomona Yellow, and more. With some further research we may see Carders color name of English Pomona Yellow be Citron. We have the terms canary, vaseline, and pomona all used to describe the same uranium yellow color. If English Pomona Yellow is indeed Citron then it will be CY-4. (CY-4 is the mix with the uranium in it). So as I see it we have 5 shades of yellow we are looking for examples in. I hope the discussion on Persian Blue has been inspiring and insightful and I hope everyone who desires to has a chance to add this color to their collection with confidence,
Thank you
Rande Bly
—– Original Message —-
From: Alan Shovers ashovers@kddk.com
Sent: Sunday, February 1, 2009 12:36:10 PM
Subject: Carder Steuben Club Gazelle Gazette 2/1/09 Persian Blue
The last e-mail was a discussion of the rare Carder color of Persian Blue. Rande Bly has specialized in identifying crystal colors in the blue and green range. Many collectors are quite focused on the 140 color range of Mr. Carder. Others, care about decorations, shapes, table ware, Cintra, perfumes, acb’s and the list goes on and on. Oh, so many ways to collect and understand the genius of creativity from Mr. Carder. Something for everyone. Yes, we have a big tent to cover the technicians, historians, and on to pure decorative art lovers. Well, at any rate for today’s message let’s focus on the Persian Blue color way. Gerry Eggert of Rochester, NY tells us about Rande Bly and his interest in color.
This guy is a real expert on Carder colors and the various shadings of green and yellow. He knew Bob Rockwell when he had the Department Store. He ID’ed a color for Mr Rockwell then!–35 years ago! June Riccio of Alamo, CA shares the attached picture of a piece of Persian Blue Glass with this lead in comment. Here is a pix of my representative piece of Persian Blue. It is Shape #6817, but the threading is such a pale yellow I attributed it to Citron Yellow rather than Bristol. Perhaps I was wrong. Some of the threading is missing, but it has a nice signature in it. Thanks so much for sharing the article with all of us.