Introduction
Counterfeit jewelry costs consumers billions annually. Fake gold, plated silver, and synthetic stones sold as natural gems flood online marketplaces and discount retailers.
This guide covers professional authentication methods for silver, gold, and moissanite jewelry. You'll learn hallmark identification, at-home tests, and when to seek professional appraisal.
No prior expertise required. These methods work for rings, necklaces, bracelets, and earrings.
How to Test If Silver Is Real
Real silver is 92.5% pure silver mixed with 7.5% other metals (typically copper). This alloy is called sterling silver.
Hallmark Stamps
Look for these markings on clasps, inner bands, or backs of pieces:
- 925 – Sterling silver (most common)
- Sterling – Written word confirmation
- Ster – Abbreviated sterling mark
- .925 – Decimal notation
Magnify small stamps with your phone camera or jeweler's loupe. Fake pieces often skip stamps or use illegible marks.
Magnet Test
Silver is not magnetic. Hold a strong magnet near your jewelry.
- Real silver: No attraction
- Fake silver: Sticks or pulls toward magnet
This test eliminates steel, iron, and nickel-plated fakes but won't catch all counterfeits.
Ice Test
Silver has high thermal conductivity. Place an ice cube on the jewelry.
- Real silver: Ice melts rapidly (faster than on stainless steel or ceramic)
- Fake silver: Ice melts at normal rate
Works best on flat surfaces like pendants or bangles.
Tarnish Check
Authentic silver oxidizes and develops a dark patina over time. Check for:
- Black or gray discoloration in crevices
- Greenish tint (indicates copper content in sterling)
- Tarnish that removes with a polishing cloth
Stainless steel and rhodium-plated metals won't tarnish.
Acid Test
Professional jewelers use nitric acid to verify silver content.
Apply one drop to an inconspicuous spot:
- Real silver: Turns creamy white
- Fake silver: Turns green (copper) or black (other metals)
Acid test kits cost $10-$20 online. Use in ventilated areas with gloves.
Sound Test
Real silver produces a high-pitched ringing sound when tapped.
Hold the jewelry loosely and tap with metal object:
- Real silver: Clear, sustained ring (like a bell)
- Fake silver: Dull thud or short ring
Most effective on larger pieces like bracelets or thick chains.
How to Tell If Gold Is Real
Gold purity is measured in karats. Higher karat numbers mean more pure gold content.
Common purities:
- 24K – 99.9% pure gold (soft, rare in jewelry)
- 18K – 75% gold, 25% alloy metals
- 14K – 58.3% gold, 41.7% alloy metals
- 10K – 41.7% gold, 58.3% alloy metals
Hallmark Inspection
Check for these stamps inside rings, on clasps, or behind pendants:
- 10K, 14K, 18K, 24K – Karat marks
- 417 – 10K gold (41.7% pure)
- 585 – 14K gold (58.5% pure)
- 750 – 18K gold (75% pure)
- 999 – 24K gold (99.9% pure)
European hallmarks use three-digit purity numbers instead of karat marks.
Magnet Test
Gold is not magnetic. Same process as silver testing.
- Real gold: No magnetic pull
- Gold-plated steel/iron: Attracts to magnet
This eliminates obvious fakes but not all gold-plated pieces.
Ceramic Scratch Test
Drag the jewelry across unglazed ceramic tile (use the back of a bathroom or kitchen tile).
- Real gold: Leaves golden-yellow streak
- Fake gold: Leaves black or no streak
This test creates a small scratch on the jewelry. Use on inconspicuous areas.
Skin Discoloration Test
Real gold doesn't oxidize or react with skin.
Wear the piece for several days:
- Real gold: No green, black, or dark marks on skin
- Fake/plated gold: Green discoloration (copper oxidation)
Not foolproof—some people's skin chemistry reacts differently.
Nitric Acid Test
Professional method for confirming gold purity.
Apply acid to a small scratch on jewelry:
- Real gold: No reaction
- Gold-plated: Reveals base metal underneath
- Fake gold: Turns green or dissolves
Different acid strengths test for different karat levels. Jewelers use this as definitive proof.
Float Test
Real gold is dense and heavy. Drop small pieces in water:
- Real gold: Sinks immediately
- Fake gold: Floats or sinks slowly
Limited use for hollow or lightweight jewelry designs.
Weight and Density
Gold is significantly heavier than most metals used in counterfeits.
Hold the piece in your hand:
- Real gold: Noticeably heavy for its size
- Fake gold: Lightweight, similar to aluminum or brass
Compare weight to confirmed gold pieces of similar size.
How to Authenticate Moissanite
Moissanite is lab-created silicon carbide. It's not a diamond simulant—it's a distinct gemstone with different optical properties.
Moissanite and diamond look similar but have measurable differences.
Visual Inspection Under Light
Moissanite has higher refractive index than diamond (2.65 vs 2.42).
Tilt the stone under direct light:
- Moissanite: Rainbow-colored fire (spectral colors visible)
- Diamond: White and gray light reflections
- Cubic zirconia: Excessive rainbow fire (more than moissanite)
Moissanite's "disco ball" effect is its signature trait.
Double Refraction Test
Moissanite is doubly refractive. Diamond is singly refractive.
Look through the stone at text or lines:
- Moissanite: Facet edges appear doubled or blurred
- Diamond: Single, crisp facet lines
Use a jeweler's loupe for clearest view. Most visible in stones over 1 carat.
Electrical Conductivity Test
Moissanite conducts electricity. Diamond does not (except rare blue diamonds).
Professional jewelers use electrical conductivity testers:
- Moissanite: Tester beeps/lights up
- Diamond: No response
Diamond testers that only measure heat conductivity will incorrectly identify moissanite as diamond. Use testers that check electrical conductivity.
UV Light Test
Both moissanite and diamond fluoresce under UV light, but differently.
Use UV flashlight (shortwave or longwave):
- Moissanite: Typically shows orange, yellow, or gray fluorescence
- Diamond: Shows blue fluorescence (30% of natural diamonds) or none
Not definitive alone—some diamonds show similar colors.
Professional Certification
Legitimate moissanite comes with certification from:
- Charles & Colvard (original moissanite producer)
- GRA (Gemological Research Association)
- IGI (International Gemological Institute)
Certificates include carat weight, cut grade, and color grade.
Our moissanite jewelry collection includes GRA certification with every purchase.
Thermal Conductivity (Unreliable)
Standard diamond testers measure heat dissipation. Moissanite conducts heat similarly to diamond.
- Both moissanite and diamond: Positive reading on heat-based testers
This test cannot distinguish between the two. Electrical conductivity testers are required.
Price Reality Check
Moissanite costs 90% less than equivalent diamond.
Price comparisons per carat (1ct):
- Moissanite: $300-$600
- Diamond: $3,000-$12,000+
- Cubic zirconia: $20-$50
If a "diamond" is priced near moissanite levels, it's not a natural diamond.
Buying Guide: What to Look for When Purchasing Real Jewelry
Check Seller Credentials
Buy from retailers who provide:
- Clear metal purity disclosure (10K, 14K, sterling, etc.)
- Gemstone certification for moissanite or other stones
- Return policies (minimum 30 days)
- Detailed product descriptions
Avoid marketplaces that lack verification for individual sellers.
Request Certifications
For moissanite and gemstones:
- IGI, GRA, or Charles & Colvard certificates
- Laser inscription on stone girdle (visible under 10x magnification)
- Grading report matching stone in setting
For gold and silver:
- Assay office marks (UK/European jewelry)
- Manufacturer stamps
- Purchase receipts listing metal content
Understand Plating vs. Solid Metal
Gold-plated: Base metal with a thin gold layer (wears off in 6-24 months)
Gold vermeil: Sterling silver base with thick gold plating (lasts 1-3 years)
Solid gold: Entire piece is gold alloy (lasts a lifetime)
Plated jewelry costs 70-90% less than solid metal. Check product descriptions for exact
terminology.
Know Your Metal Allergies
Nickel sensitivity: Affects 10-20% of population
Safe metals:
- Sterling silver (925)
- 14K+ gold
- Platinum
- Titanium
- Surgical steel
Avoid costume jewelry, cheap alloys, and unverified "hypoallergenic" claims.
Size and Weight Expectations
Thin chains and delicate settings weigh less—it doesn't mean they're fake.
Use these benchmarks:
- Sterling silver chain (18", 2mm): 8-12 grams
- 14K gold chain (18", 2mm): 4-6 grams
- Moissanite (1ct round): 0.88 grams weight, 6.5mm diameter
Compare similar styles when assessing authenticity.
Match Settings to Stone Hardness
Moissanite rates 9.25 on the Mohs hardness scale. Suitable for all jewelry types, including daily-wear engagement rings.
Our moissanite engagement rings use prong or bezel settings in 14K gold or sterling silver for durability.
Silver rates 2.5-3 on Mohs scale. Best for:
- Necklaces
- Earrings
- Occasional-wear rings
Avoid silver for gym jewelry or pieces exposed to friction.
Verify Return and Exchange Policies
Standard protections:
- 30-day returns (minimum)
- Free resizing within 60 days
- Manufacturer warranty (1 year minimum for settings)
Policies indicating real jewelry:
- Lifetime warranties on moissanite (won't cloud or degrade)
- Free rhodium plating refreshes for white gold
- Repair services for prong retipping
Jewelry Care and Maintenance
Silver Care
Tarnish prevention:
- Store in anti-tarnish pouches or bags
- Keep away from humidity
- Remove before swimming (chlorine accelerates tarnish)
Clean with:
- Polishing cloth for light tarnish
- Baking soda paste for heavy tarnish
- Professional ultrasonic cleaning (annual)
Browse our sterling silver jewelry collection for tarnish-resistant rhodium-plated options.
Gold Care
Gold doesn't tarnish but scratches over time (especially 10K-14K).
Maintenance:
- Clean with mild dish soap and warm water
- Soft brush for textured or detailed pieces
- Professional polishing every 2-3 years to restore shine
Avoid:
- Chlorine (weakens gold alloys)
- Harsh chemicals (bleach, acetone)
- Abrasive materials
Moissanite Care
Moissanite is the second-hardest gemstone after diamond. Requires minimal maintenance.
Cleaning frequency:
- Weekly: Warm water + dish soap
- Monthly: Ultrasonic cleaner (safe for moissanite)
- Annual: Professional inspection of prongs
Moissanite doesn't cloud, scratch easily, or change color over time.
When to See a Jeweler
Professional inspection recommended:
- Every 6 months for engagement rings
- Annually for other fine jewelry
- Immediately if the prongs feel loose
- After impact or dropping a piece
Jewelers check:
- Prong security
- Setting integrity
- Clasp function
- Stone tightness
Common Jewelry Authentication Mistakes
Assuming Weight Equals Authenticity
Counterfeiters add heavy base metals (lead, tungsten) to fake gold to mimic weight.
Weight confirms density but doesn't verify composition. Combine with hallmark checks and acid tests.
Trusting Magnets Alone
Non-magnetic doesn't automatically mean real gold or silver.
Metals that pass magnet test but aren't precious:
- Copper
- Brass
- Aluminum
- Zinc alloys
Always use multiple verification methods.
Confusing Moissanite with Fake Diamond
Moissanite is a legitimate gemstone, not a diamond imitation.
Marketing differences:
- Moissanite: Sold as moissanite with accurate grading
- Diamond simulants: CZ or glass sold deceptively as diamond
Reputable jewelers label moissanite clearly and price it appropriately ($300-$600/ct vs $3,000+/ct for diamond).
Ignoring Certification
"Certified" doesn't mean authentic without a named certification body.
Valid certifications:
- IGI, GIA, GRA for gemstones
- Hallmark stamps for precious metals
- Assay office marks (UK/Europe)
Invalid certifications:
- Store-created certificates
- Unnamed "gemological labs."
- Vague "quality guaranteed" statements
Relying on Seller Descriptions
Product titles like "gold-tone," "gold-colored," or "gold-style" indicate plating or base metal.
Look for:
- Exact metal content (14K gold, 925 sterling)
- Plating thickness if vermeil
- Gemstone type by name (moissanite, not "diamond alternative")
Skipping At-Home Tests
Professional appraisal costs $50-$150 per piece.
Perform basic tests first:
- Hallmark check
- Magnet test
- Visual inspection
- Weight assessment
Save professional verification for high-value pieces or inconclusive results.
Believing "Hypoallergenic" Claims
No metal is universally hypoallergenic.
Safe options for sensitive skin:
- 14K+ gold (lower alloy content)
- Platinum
- Titanium
Avoid:
- Gold-plated jewelry (base metal causes reactions)
- "Surgical steel" (contains nickel)
- Unverified alloys
Explore our gold jewelry collection with 14K and 18K options for sensitive skin.
Common Jewelry Myths Debunked
Myth: Real Gold Never Scratches
All gold scratches. Higher karat gold (18K-24K) is softer and scratches more easily than 10K-14K alloys.
Platinum scratches develop patina rather than losing metal. This is desirable to many buyers.
Myth: Moissanite Looks Fake
Moissanite has more brilliance than diamond but appears natural to untrained eyes.
Only jewelers with magnification and testing equipment can quickly distinguish moissanite from diamond.
Myth: Sterling Silver Turns Your Skin Green
Pure silver doesn't cause discoloration. Copper content in sterling silver (7.5%) reacts with skin chemistry in some people.
Green skin indicates:
- Copper oxidation (normal reaction)
- High skin acidity
- Lotion or chemical interaction
Not a sign of fake silver.
Myth: Heavy Jewelry Is Always Real
Tungsten, lead, and steel weigh similar to gold.
Counterfeiters create heavy pieces using cheap dense metals. Weight alone doesn't confirm authenticity.
Myth: You Need a Jeweler to Verify Jewelry
Basic tests (hallmarks, magnets, ice test, visual inspection) identify most fakes at home.
Professional appraisal needed for:
- High-value pieces (over $1,000)
- Unclear hallmarks
- Suspected fraud
- Insurance documentation
Myth: All Lab-Created Stones Are Fake
Lab-grown gemstones are chemically identical to mined stones.
Moissanite, lab diamonds, and lab sapphires are real gemstones with same physical properties as natural versions.
"Fake" refers to glass or plastic imitations, not lab-created gems.
Frequently Asked Questions
How can you tell if jewelry is real at home?
Check for hallmark stamps (925 for silver, 10K/14K/18K for gold). Use a magnet—real precious metals aren't magnetic. Inspect for tarnish on silver or skin discoloration from fake metals. Look for gemstone certifications. These tests identify most counterfeits without professional equipment.
What does 925 mean on jewelry?
925 means 92.5% pure silver, also called sterling silver. The remaining 7.5% is typically copper for durability. All legitimate sterling silver has 925, .925, Sterling, or Ster stamped on clasps, bands, or backs.
Will real gold stick to a magnet?
No. Real gold is not magnetic. If jewelry sticks to a magnet, it contains iron, steel, or nickel—either fake gold or gold plating over magnetic base metal. This test eliminates obvious counterfeits but won't catch all fakes.
How do you test moissanite at home?
Tilt the stone under light to see rainbow-colored fire (moissanite shows more spectral colors than diamond). Check for double refraction by looking at facet edges under magnification—they'll appear doubled. Verify electrical conductivity with proper tester (not standard diamond tester). Request IGI or GRA certification.
Does real silver tarnish?
Yes. Authentic sterling silver oxidizes and develops black or gray tarnish over time. This confirms silver content. Metals that don't tarnish (stainless steel, rhodium-plated metal, aluminum) are not silver. Tarnish removes easily with polishing cloth.
What's the difference between gold-plated and solid gold?
Gold-plated has thin gold layer (0.5-2.5 microns) over base metal. Plating wears off in 6-24 months. Solid gold is gold alloy throughout the entire piece (10K-24K). Solid gold lasts a lifetime and maintains value. Plated jewelry costs 70-90% less.
Can fake jewelry have stamps?
Yes. Counterfeiters add fake 925, 14K, or 18K stamps to appear legitimate. Verify stamps with additional tests: magnet check, acid test, weight assessment, and professional appraisal for expensive pieces. Stamps alone don't guarantee authenticity.
How much does jewelry appraisal cost?
Professional appraisal costs $50-$150 per piece, depending on complexity. Insurance appraisals cost more ($100-$300) and include detailed documentation. Perform at-home tests first for basic verification. Get a professional appraisal for high-value jewelry, insurance purposes, or unclear results.
