How Your Gold Is Valued
Before you sell, understand exactly how a professional gold buyer in Los Angeles measures purity, weight, and market value. At South Bay Coin, every test and every number happens right in front of you, with no guesswork and no pressure.
The Most Transparent Way to Learn How Gold Is Valued in Los Angeles
Understanding how gold is valued comes down to three measurable facts about your item: how pure it is, how much it weighs, and what the metal trades for on the open market that day. South Bay Coin has explained this same process to thousands of clients across Los Angeles County since 1980, and we believe a fair valuation should never be a mystery you have to take on faith.
We are a licensed, bonded, and insured precious metals dealer in Lawndale, California. Unlike many buyers, we test, sort, and weigh every piece in front of you and walk you through how each number was reached. Because we operate an in-house refinery rather than reselling your gold to a third party, we can value items at their true metal content instead of discounting for a middleman's margin. That is the single biggest reason our offers tend to beat pawn shops and jewelry stores.
Whether you want to sell gold in Los Angeles, understand what your gold coins are worth, or simply compare your silver against an honest appraisal, this page explains the valuation step by step. There is never any obligation to sell, and every appraisal is free. The more you understand the process, the more confident you can be in the offer you receive anywhere.
Have Your Gold Valued at Our Lawndale Showroom
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How We Test Your Gold's Purity
Purity is the first thing that determines how your gold is valued, and it is measured in karats. Pure gold is 24 karat, while 18K is 75 percent gold, 14K is about 58.3 percent, and 10K is roughly 41.7 percent. The rest is alloy metals like copper and silver added for strength and color. Only the actual gold content carries value, so confirming purity correctly is everything.
We start with a hallmark inspection, reading the stamp on your piece, then verify it with testing rather than trusting the stamp alone. For most jewelry we use an XRF analyzer, a non-destructive X-ray method that reads the full metal composition in seconds without scratching or harming the item. When useful, we confirm with an electronic conductivity tester, a touchstone, or a controlled acid test. Fire assay, which melts a sample, remains the industry benchmark but is reserved for refinery-grade verification because it is destructive.
This is also where honest valuation separates from sloppy valuation. Some buyers lump a mixed pile together and pay everything at the lowest karat, or quietly value plated items as if they were solid. We sort your pieces by karat, flag anything that is plated or filled, and test each group on its own merits. Knowing how gold purity is tested protects you no matter where you ultimately decide to sell.
How Weight and the Market Set the Value
Once purity is confirmed, weight decides how much pure gold you actually own. Precious metals are not weighed on a grocery scale. The industry uses the troy ounce, which is about 31.1 grams and roughly 10 percent heavier than the standard ounce most people picture. Many dealers also weigh in pennyweights, where one pennyweight equals about 1.555 grams and 20 pennyweights make a troy ounce.
That difference is where sellers lose money without realizing it. A common trick is weighing your gold in pennyweights but paying you at a per-gram rate, so always confirm the unit and the rate match. We weigh on a calibrated scale that reads to three decimal places, show you the number, and subtract the weight of any stones or non-gold parts to find the true net metal weight. You only get valued on the gold itself, never the gemstones counted as gold.
The final piece is the live market. Gold trades on a global spot market that moves throughout the day, and that market price is the baseline every honest valuation starts from. We apply the current market rate to your verified purity and net weight, then explain the result out loud. For coins and bullion, we also weigh collector demand: many items are worth more for their numismatic value than their melt value, and we never pay melt for a piece that is rare.
Gold and Silver We Appraise for Cash
We value gold and silver in any condition, any karat, and any form. Every item is tested, weighed, and assessed for its full metal and collector value.
Gold Jewelry
Chains, rings, bracelets, earrings, and pendants. We sort by karat and subtract stones to value only the gold itself.
Gold Coins & Bullion
Eagles, Krugerrands, Maple Leafs, bars, and ingots. We weigh both melt content and any numismatic premium they carry.
Scrap & Dental Gold
Broken pieces, single earrings, dental crowns, and bridges. Condition never matters because value comes from verified metal content.
Silver Coins, Bars & Flatware
Sterling (925), coin silver, rounds, bars, and flatware. We confirm fineness, then value by net weight and the silver market.
How a Valuation Works in Three Steps
Bring It In
Walk into our Lawndale showroom at 16916 Hawthorne Blvd. No appointment needed. Or text us photos first at (310) 363-2697.
Watch the Test and Weigh
We verify purity with XRF, sort by karat, and weigh each piece on a calibrated scale right in front of you. Nothing happens out of sight.
See How the Value Was Reached
We explain purity, net weight, and the live market rate behind every number, then make a no-pressure offer. Bring a valid photo ID.
How Our Valuation Process Differs From Other Buyers
The way a buyer values your gold matters as much as the offer itself. Here is how our transparent process compares to the common alternatives.
| South Bay Coin | Pawn Shops | Jewelry Stores | Mail-In | |
|---|---|---|---|---|
| Tests purity in front of you | Sometimes | Sometimes | ||
| Sorts and weighs by karat | Rarely | Sometimes | Varies | |
| Explains the valuation math | Sometimes | |||
| Non-destructive XRF testing | Varies | Varies | Varies | |
| Values melt and numismatic worth | Rarely | |||
| 45+ year track record | Varies | Varies | Varies |
What Our Customers Say
Common Questions About How Gold Is Valued
How your gold is valued comes down to three things: purity, weight, and the live market. We confirm the karat to find how much is pure gold, weigh the net metal after removing any stones, then apply the current market rate. We explain each number in front of you before making an offer.
Reputable buyers verify purity rather than trusting the stamp. We use a non-destructive XRF analyzer that reads full metal composition in seconds, and confirm with electronic testers, a touchstone, or a controlled acid test when needed. Fire assay is the most accurate method but is destructive, so it is reserved for refinery verification.
Karat measures purity, the percentage of an item that is actually gold (24K is pure, 14K is about 58 percent). Weight measures how much total metal you have. Value depends on both: pure gold content equals karat purity multiplied by net weight. A heavy 10K piece can hold less gold than a lighter 18K one.
Precious metals use the troy system. A troy ounce is about 31.1 grams (roughly 10 percent heavier than a kitchen ounce), and one pennyweight equals about 1.555 grams, with 20 pennyweights to a troy ounce. The weight is the same metal, just expressed differently. Always confirm the unit and rate match before you sell.
No. XRF (X-ray fluorescence) is non-destructive. It reads the full metal composition without scratching, cutting, or melting your item, which makes it ideal for jewelry, coins, and high-value pieces. It also identifies gold-plated items that only carry a thin surface layer, so plated goods are never valued as solid gold.
Scrap gold and intact jewelry are valued the same way when value comes from metal content. Condition does not matter, because we test purity and weigh net gold regardless of whether a piece is broken, tangled, or missing a mate. A wearable designer item may carry extra value, but most jewelry is valued on its gold.
Melt value is what the raw metal is worth based on purity, weight, and the market. Numismatic value is the collector premium some coins carry for rarity, condition, mint year, or demand. A coin can be worth far more than its melt value, so a good buyer checks both and never pays melt for a collectible.
For bullion like Eagles, Krugerrands, and bars, we verify weight and fineness and value the metal against the live market. For collectible coins, we also assess date, mint, condition, and rarity to capture any numismatic premium. We examine each coin closely, including the edge, since premiums can far exceed the metal alone.
Differences usually come from process, not the gold. One buyer may lump mixed karats together, weigh in one unit but pay in another, or value plated pieces as solid. A buyer with an in-house refinery values true metal content directly instead of discounting for a middleman, which is why our process is transparent end to end.
No appointment is needed. Walk into our Lawndale showroom during business hours and we will test, weigh, and explain a valuation on the spot. Most visits take about 15 minutes. You can also text photos to (310) 363-2697 first. Bring a valid photo ID, and there is never any obligation to sell.
Find Out What Your Gold Is Really Worth
Bring your gold to our Lawndale showroom for a free, no-obligation valuation. We test, weigh, and explain every number in front of you.