What you normally see .925 which is the standard for Sterling silver, meaning the silver content in the piece is 92.5% (i.e., the remaining 7.5% is comprised of other elements).
.929 then could mean that the silver content in a piece is 92.9%.
Check out this online encyclopedia of silver marks, hallmarks & makers' marks.
Here are 12 top tips on how to spot fake jewellery items shared by JewelleryMonthly.com.
Silver is a precious metal and, much like gold, is too fine to be utilized in its pure form.
To make silver durable enough for use in jewelry, pure silver, which has a .999 fineness (99.9%), is often alloyed with small quantities of copper (7.5%). The copper is added to strengthen the silver and the resulting product is .925 sterling silver (92.5%). Acceptable quality marks for sterling silver include: sterling, sterling silver, ster, and .925
Learn everything you need to know about silver on JewelryInfoPlace.com.