AGATE PRECIOUS METALS • BUYER EDUCATION
Bullion Glossary: Gold, Silver, Coin, and Precious-Metals Terms
Precious-metals terminology can be confusing when you compare gold coins, silver bars, bullion premiums, coin grades, or product values. This Agate Precious Metals glossary explains common gold, silver, bullion, coin, pricing, grading, and collecting terms in plain language.
Use the search box or select a letter to find a definition. For more detail, visit Agate’s gold and silver buying guides, calculators, product pages, and authentication resources. Start with what the item is, how much precious metal it contains, and what the complete transaction costs.
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A
Allocated Storage
A storage arrangement in which specific metal is identified as belonging to a customer. Allocation is not necessarily the same as physically segregated storage; review the provider’s ownership and custody agreement.
Alloy
A mixture of metals or a metal combined with other elements. Coin alloys can improve durability or change appearance, so total coin weight and precious-metal weight may differ.
American Eagle
A United States Mint coin family that includes precious-metal bullion and collector issues. Confirm the exact metal, size, finish, and specifications rather than assuming every Eagle contains the same amount or purity.
Ask Price
The price at which a seller offers a product or market instrument. A retail bullion ask normally includes a product premium; shipping, payment fees, and applicable tax may be additional.
Assay
An analysis used to determine a material’s composition or precious-metal purity. An assay result is different from simply weighing an item or estimating its resale value.
Assay Card
Documentation or packaging stating a bar’s specifications and, where applicable, its serial number and assayer information. A card supports identification but does not independently prove that the enclosed bar is genuine.
Authenticity
Whether an item is genuine and matches the identity and specifications claimed for it. Seller records, measurements, physical characteristics, and appropriate professional testing contribute different kinds of evidence.
B
Bar
A shaped piece of metal sold with a stated weight and purity. Bars may be cast or minted and can carry a refiner mark, fineness, weight, and serial number.
Bid Price
The amount a buyer is willing to pay for an item under stated terms. A dealer’s bid is commonly below its retail ask and may depend on quantity, condition, verification, and market conditions.
Bullion
Precious metal valued primarily for its contained metal rather than rarity or artistic importance. Coins, bars, and rounds can all be bullion products, although some also attract collector premiums.
Bullion Coin
A coin issued primarily for precious-metal ownership, with value generally tied to metal content plus a premium. Sovereign bullion coins may carry legal-tender denominations that differ from market value.
C
Certified Coin
A coin evaluated by a professional certification service. Its label may identify a numerical grade, a details designation, or another assessment. Certification does not promise a future selling price.
Clad Coin
A coin made from bonded layers with different compositions. “Clad” does not by itself establish whether a coin contains silver; the exact issue’s specifications matter.
Coin Grade
An assessment of condition based on factors such as wear, marks, luster, strike, and surface preservation. Grading standards depend on the coin series and grading context.
Coin Premium
The portion of a coin’s price above its contained-metal value. It can reflect fabrication, distribution, scarcity, grade, design, packaging, and collector demand.
Copper Bullion
A trade description for copper bars, rounds, and similar products. Copper is a base metal, and finished copper collectibles may sell for more than raw copper content because of production and design costs.
D
Dealer Premium
The amount above underlying metal value included in a dealer’s product price. It is not necessarily the dealer’s profit; fabrication, distribution, inventory, and operating costs may account for part of it.
Density Test
A comparison of measured weight and volume with the expected density of a metal or alloy. It can be a useful screening method but is not always conclusive, especially for plated or complex products.
Depository
A professional facility used to store precious metals. Storage arrangements, ownership records, insurance, access, and fees depend on the provider and account terms.
E
Encapsulated Coin
A coin sealed in a protective holder. An encapsulated coin may be certified or uncertified, depending on the holder and documentation.
Engraving
A design, inscription, or marking placed on a coin, bar, or other precious-metals product. Engraving can be original, commemorative, or a later alteration.
F
Face Value
The legal-tender denomination printed on a coin. A bullion coin’s market value can be substantially different from its face value.
Fine Gold
Gold with a high level of purity. Confirm the exact fineness from product specifications rather than assuming it from a product name.
Fineness
The proportion of precious metal in an alloy, commonly expressed as parts per thousand. For example, .999 fineness indicates 999 parts precious metal per 1,000 parts.
G
Gold Bullion
Gold in a recognized investment format such as a bar, coin, or round. Value depends on weight, purity, spot price, premium, product demand, and condition.
Gold Spot Price
The current reference price used by markets for gold. Retail products usually trade above spot because of premiums and transaction costs.
Gram
A metric unit of weight. Small gold bars and fractional products are often sold by gram weight.
H
Hallmark
A mark or set of marks that can identify a maker, purity, origin, or other characteristic of a precious-metal item. Meaning depends on the product and jurisdiction.
I
IRA-Eligible Precious Metals
Certain precious-metals products that may qualify for placement in an eligible self-directed retirement account under applicable requirements. Eligibility depends on the product, custodian, account, and current rules.
Insured Shipping
A shipping arrangement that may provide coverage for qualifying loss or damage during transit under stated carrier and seller terms. Review the applicable policy.
J
Junk Silver
A common market term for circulated U.S. coins that contain silver and are generally valued primarily for silver content rather than rarity. The term does not mean the coins have no value.
K
Karat
A measure of gold purity used mainly for jewelry. Karat is different from carat, which measures gemstone weight. Bullion products are commonly described using fineness instead.
Kilogram Bar
A precious-metals bar weighing approximately one kilogram. Its exact purity, refiner, dimensions, and markings depend on the product.
L
Legal Tender
Currency officially recognized by a government for payment of debts. A bullion coin may have legal-tender status while trading at a market value above face value.
Liquidity
How easily an asset can be bought or sold without a significant price concession. Recognized bullion products may have a broader resale market, but liquidity is not guaranteed.
M
Melt Value
The estimated value of precious metal contained in an item, usually calculated from weight, purity, and a current reference price. Melt value is not necessarily the retail price or collector value.
Mint Mark
A letter or symbol identifying the mint or facility where a coin was produced. Its location and meaning vary by coin series.
Mintage
The number of coins produced for a specific date, issue, or series. Mintage alone does not determine a coin’s value.
Mint State
A condition designation generally used for a coin that shows no circulation wear. Professional grading services may use numerical grades within the Mint State range.
N
Numismatic Coin
A coin valued partly or primarily for characteristics beyond metal content, such as rarity, date, mint mark, condition, historical importance, or collector demand.
O
Ounce
A unit of weight that can refer to different systems. Precious metals are typically measured in troy ounces, not ordinary avoirdupois ounces.
P
Palladium Bullion
Palladium in an investment format such as a bar or coin. Product value depends on weight, purity, market price, premium, availability, and demand.
Platinum Bullion
Platinum in an investment format such as a bar or coin. Platinum products can have different market, industrial, and collectible factors than gold or silver.
Premium
The amount paid above underlying metal value for a bullion product. Premiums can change with product size, mint, availability, market conditions, demand, and dealer costs.
Proof Coin
A specially produced coin made using preparation and striking processes intended to create sharp detail and reflective or contrasting surfaces. Proof status does not automatically mean high resale value.
Purity
The amount of precious metal in a product, often expressed as a percentage or fineness number.
Q
Quote
A stated price or offer for a product or transaction at a particular time. Bullion quotes may be time-sensitive and subject to availability, payment, market movement, and stated terms.
R
Refinery
A facility that processes or purifies precious-metal material. A refinery may produce bars, grain, or other refined forms.
Round
A privately minted precious-metal piece shaped like a coin but generally not issued as legal tender. Rounds are usually valued by metal content, purity, premium, and demand.
S
Silver Bullion
Silver in an investment format such as a coin, bar, or round. Value depends on weight, purity, silver price, product demand, and condition.
Silver Spot Price
The current market reference price for silver. Retail silver products generally sell above spot because of premiums and transaction costs.
Silver Content
The amount of silver contained in a coin, bar, round, or other product. Silver content may be stated as a weight, percentage, or fineness.
Slab
A protective holder used by a professional coin-grading service. A slab may contain the coin’s grade, certification number, and identification information.
Spot Price
A market reference price for a precious metal at a particular time. It is not automatically the final price of a retail coin, bar, or round.
Stackers
A common term for people who regularly accumulate physical precious metals, often emphasizing weight, consistency, premiums, and long-term ownership.
T
Troy Ounce
The standard unit commonly used to weigh and price precious metals. One troy ounce equals approximately 31.1035 grams and is heavier than an ordinary avoirdupois ounce.
Token
A privately issued piece that may resemble a coin but does not necessarily have legal-tender status. Its value depends on material, purpose, rarity, and collector demand.
U
Uncirculated
A coin that has not been used in ordinary circulation and generally shows no circulation wear. The term may be used differently depending on product and grading context.
V
Vermeil
A layer of gold applied over sterling silver or another qualifying base under applicable standards. Vermeil is not the same as solid gold.
Variety
A coin with a distinctive design or production characteristic that separates it from other coins of the same type or date.
W
Weight
The measured mass of a product. Precious-metals weight should be identified using the correct unit, such as grams, troy ounces, kilograms, or pennyweights.
X
XF
An abbreviation commonly used for “Extremely Fine,” a coin-condition description indicating limited wear with substantial design detail remaining. Exact grading standards vary by series and service.
Y
Year of Issue
The year associated with a coin’s production or release. A date alone does not determine authenticity, rarity, or value.
Z
Zinc
A base metal used in some coins and alloys. Zinc is not a precious metal and should not be confused with silver, gold, platinum, or palladium content.
Related Agate guides and products
Gold and silver bullion products
Compare current product formats, weights, and stated specifications. Availability and prices can change.
Silver coin melt value calculator
Learn how silver content, weight, purity, and a reference price affect a melt-value estimate.
How to tell if a gold coin is real
Review multiple authenticity signals and understand the limits of simple home tests.
What is an assay card on a gold bar?
Understand what packaging and assay documentation can—and cannot—show.
Examples of Agate bullion formats
These product links illustrate common bullion formats. Review each live listing for current price, availability, packaging, and specifications before purchasing.
1/2 Gram Gold Bar – Valcambi Carded
A fractional gold-bar example with stated refiner and carded presentation.
1/2 Gram Gold Bar – Frontier Mint Carded
A small-format gold product useful for comparing weight, purity, and packaging.
1/2 oz Gold Bar – PAMP Fortuna Carded
A larger carded bar example with product-specific documentation.
1/10 oz Silver Round – Buffalo
A silver-round example that helps distinguish privately minted rounds from legal-tender coins.
Frequently asked questions
What is bullion?
Bullion is precious metal valued primarily for its weight, purity, and market value. It can be sold as bars, coins, rounds, and other recognized products.
What is the difference between a bullion coin and a round?
A bullion coin is generally issued by a government mint and may have legal-tender status. A round is usually privately minted and is not legal tender. Both can contain precious metal and may carry a premium.
What is the difference between spot price and premium?
Spot price is a market reference price for the metal. A premium is the additional amount charged for fabrication, minting, distribution, availability, demand, packaging, and other costs.
What is a troy ounce?
A troy ounce is the standard precious-metals weight unit and equals approximately 31.1035 grams. It is heavier than an ordinary avoirdupois ounce.
Does higher purity always mean a better product?
Not necessarily. Product choice also depends on price, premium, liquidity, divisibility, authenticity, purpose, and resale considerations.
Continue your bullion research
Compare current Agate bullion products, review buyer education, or contact Agate Precious Metals with a product question. Do not rely on a glossary definition alone for a high-value purchase.
Browse bullion productsRead buying guidesContact AgateLast reviewed: September 14, 2026. Terms and links should be reviewed periodically, especially product, IRA, shipping, testing, pricing, and policy references.
