Here are some chevrons that I would call rare but that are not really chevrons. These beads were made from old Murrini Cane that was cut ground and drilled into beads. These were purchased in the early 90's in Murano.
Hello BW,
If you read Part IV of my series on rosetta beads (Ornament 1983), you will see that it's dedicated to unusual beads—including those from floral-patterned canes. (This was also included in my paper for The Glass Trade Bead Conference, held the previous year and also published in '83). I believe I was the first bead researcher to define and include these beads in the greater scheme of rosetta beads—and to devise names for them. I know I was the first researcher to list the characteristics of rosetta beads, so that they could be compared to one another (for similarity or differences).
At that time, there were painfully few generalizations about these beads. It was recognized that 7-layer beads were early, and later beads had fewer layers. ALL these beads were called "chevron" beads (despite the advice of Brent 100 years earlier). One author even said 'chevron beads are so much alike, they are useless for archaeological dating, because we can't tell one from another.' (Paraphrasing.) I did not believe that was accurate, and began to synthesize a new way of dealing with these issues.
"Rosetta" is the name of the family of beadmaking, and encompasses solid canes (as typically used in millefiori work), and hollow canes (typically used in chevron and similar beads). It is also a handy name for the non-starry canes that resemble flowers. A flower cane yields a "flower bead" (just as a star cane yields a "star bead"). A cut flower bead yields a "scallop bead" (just as a cut star cane yields a "chevron bead"). And other variations are possible and nameable.
I likewise have and have documented the series of "pseudo chevron beads" and "pseudo rosetta beads" made in the early 1990s from solid rosetta canes—including those that featured floral patterns, were cut in the styles of chevron beads, but that required drilling. They are naturally included in my catalogue of rosetta beads—though they form their own particular area. (Until recently, when the Chinese began making "chevron beads." and their beads were routinely drilled from solid canes, over the first editions, whether a "chevron bead" had a drilled perforation or not was not much of an issue—because they were so unusual. Nevertheless, my schemata already included the possibility.)
By the way, there is no Italian word "murrini." The singular is "murrina," and the plural is "murrine" (pronounced "moor-REE-neh"). It's the same with "rosetta" (singular = "ro-SET-tah," and plural = "ro-SET-teh"). Products made from murrine canes (that are not beads) have generally been characterized as "murrine + whatever-they-are" products. For instance "vasa murrine" (a millefiori vessel). The use of this name in conjunction with beads has largely come about due to the naming influence of current American beadmakers. It was not typical in the glass literature before this time—and the "i" ending is incorrect.
Be well. Jamey