The “P” actually stands for plumb gold jewelry, whereas plated gold is typically marked “HEG” for heavy gold electroplate. Pure 24 Karat gold is generally too soft to be used for jewelry, so other metals are nearly always added to it, no matter which color of gold is being prepped for jewelry making.
The PERMANENT™ stamp, identified with the letter P in place of a value, is always accepted at the current domestic postage price. If you buy a PERMANENT stamp today, you can use it anytime in the future. One PERMANENT stamp can be used to mail a letter (weighing up to 30 grams) anywhere in Canada.
“When you see KP stamped inside your ring, which is a “P” at the end of the stamp, like: 14kp, that means that the gold is “Plumb” which means it's verified to be at least that karat weight marked or more.
Sterling Silver (SS) - Indicates that a piece consists of at least 92.5% pure silver. Platinum (PT) - Indicates that a piece consists of at least 95% pure platinum. Gold-Filled (GF) - A layer of at least 10 karat gold bonded to a base metal. Gold-Plated (GP) - A thin layer of gold coated to a base metal.
This is plumb gold. 14K means 14.0K or more and 18K means 18.0K or more. Jewelry made from 17.9K jewelry would be stamped 17K. Some manufacturers now stamp 14KP, for plumb gold.
The Karat amount refers to the purity of the gold, while plumb gold is guaranteed to have a gold purity no less than indicated on the item, but could possibly be slightly more pure. For example, a necklace or bracelet stamped with a 14K plumb gold value (14KP) is guaranteed to contain 58.33% gold or more.
Marks saying “Platinum”, “Pt”, or “Plat” must have at least 95% Platinum. No Platinum marks mean there is less than 50% Platinum in the piece. Meanwhile, Palladium fineness hallmarks are: 999 (99.9% Palladium)
These pieces will often be marked with “EP” or “SP” or “P”(for electroplate, silver plate, plated respectively). Hotel silver is an example of sturdy silver plate used on railways and in hotels which looks like sterling but is much hardier, perfect for a bustling service environment.
Platinum jewelry should be stamped “PT” for pure platinum or “PT900” or “PT950,” indicating the number of parts per thousand that are pure platinum.
The lion passant on an item of silver guarantees that the silver is at least 92.5% pure, which is the sterling standard.
The “P” actually stands for plumb gold jewelry, whereas plated gold is typically marked “HEG” for heavy gold electroplate. Pure 24 Karat gold is generally too soft to be used for jewelry, so other metals are nearly always added to it, no matter which color of gold is being prepped for jewelry making.
P1 / I1: Pique (included) / Imperfect – very easy to find under magnification, but with the naked eye, when viewed through the crown are only discernible with difficulty.
Explanation: In a pack of cards there are 52 cards and 13 of them are diamonds. Therefore the p(diamonds)= 1352=14. Another way of thinking about it is there are 4 suits in a pack, diamonds, hearts, clubs and spades.
Phosphor - 'invisible' ink (tagging) applied to the front of the stamp in vertical bars (one, two, or three have been used on Canadian stamps) or around all four sides of the stamp that, when exposed to ultraviolet light, activates a sorting and canceling machine.
Mini UV Lamps
You are looking for an afterglow as phosphor will absorb the light when you shine the light on the stamp and then re-emits it afterwards. The afterglow is as follows: 20 seconds for BLUE, 10 seconds for GREEN and 5 seconds for VIOLET.
Platinum is a very rare and expensive metal. Therefore, all platinum jewelry will be marked to show authenticity. Look for the words “Platinum," “PLAT," or “PT” followed or preceded by the numbers “950” or “999." These numbers refer to the purity of the platinum, with “999” as the most pure.
CON: Platinum is much more expensive than silver and white gold. Also, because platinum is a heavy precious metal and sold by weight, it inflates the overall cost.
Platinum isn't magnetic. If you hold a magnet to a solid piece of metal you think might be the real thing and it shows signs of being magnetic, it's not real platinum. If you notice a slight magnetic pull, you probably have white gold mixed with a bit of nickel.
When an item is stamped “925 Platinum,” it means that it is made of 92.5% platinum.
While at first glance both silver and platinum appear silver in color, the two metals are actually easily discernible to the naked eye. Both have gray undertones, unlike white gold which has a warmer, yellow undertone, but platinum is much brighter and shinier and silver has a duller, gray appearance.
PP stands for “pearl plate”. It was originally used as a method of measuring pearl sizes with plates, but these days it's used to measure extremely small products, like the crystal Chaton.
It is estimated that palladium is still about 15 times rarer than platinum, making it significantly more expensive per ounce. In fact, palladium is currently the most expensive among the four major precious metals (platinum, gold, and silver).
Gold has many uses and is thought to be the standard for precious metals, trading at $1,654 per ounce. Most investors overlook Palladium, which is even more valuable at $1,954 per ounce, respectively.
Palladium is the most valuable of the four major precious metals, with an acute shortage driving prices to records in recent years.