Two necklaces can look identical on screen and be completely different things: one solid gold, one a thin gold layer over brass. The same goes for a bag in full-grain leather and one in polyurethane, or a ring set with sapphire and one set with glass. The photograph cannot show you the difference. The material can.
This guide sets the main materials side by side so you can compare like with like: metals, stones, leathers and hair. For each, we look at what it is, how it wears, how to care for it, where it usually sits on price, and what an honest label should say. (If you want help reading the rest of a listing, such as sizes, dimensions and lengths, see our companion guide on how to read product specifications before purchasing online.)
Three questions to ask of any material
- What is it made of all the way through? A surface finish is not the material. Plating, coating and embossing all change the surface only.
- How does it age? Some materials develop character with wear (full-grain leather, solid gold). Others simply wear out (plating, PU coatings).
- Is the label precise? Words like "gold-tone", "genuine" and "luxe" describe a look or a feeling, not a material.
Metals
Solid gold: 9ct, 14ct and 18ct
Pure gold (24 carat) is too soft for most jewellery, so it is alloyed with other metals. GIA explains that 18K is 75% gold and 14K is 58.3%, and that the alloy metals also set the colour. 9ct is 37.5% gold. Lower karat means more alloy, which makes the metal harder-wearing but gives a paler colour. Our Elements Gold Pavé Diamond Twist Ring is made in 9ct rose and 9ct white gold, and its listing notes that white gold is usually rhodium-plated for a bright finish that can thin over years and be re-plated by a jeweller.
Sterling silver
Sterling is 92.5% silver. GIA notes that it is softer than white gold and tarnishes when exposed to air and moisture, so it needs polishing and careful storage. Because of this, much sterling jewellery is plated with rhodium, platinum or gold.
Plated, vermeil and gold-filled
These all put a layer of gold or another metal over a different metal underneath. The difference is what that metal is and how thick the layer is.
- Gold plated. A thin electroplated layer. The US FTC Jewelry Guides set a minimum of 0.175 microns for "gold electroplate" and 2.5 microns for "heavy gold electroplate".
- Vermeil. Gold over sterling silver. Under the FTC guides this means at least 10 karat gold, at least 2.5 microns thick. UK guidance is different. A gold-plated silver item must be described as "gold plated" and as silver, and "vermeil" may only be added alongside those words (GOV.UK). So the word does not carry the same guarantee everywhere.
- Gold-filled. A much thicker layer of gold bonded to a base metal. The FTC guides reserve "gold filled" for a gold layer making up at least 1/20th of the weight of the metal in the whole item.
- Platinum or rhodium plated. A white, bright layer that resists tarnish. It is not solid platinum. Our Lab-Created Emerald Pear-Cut Drop Earrings say plainly that their platinum colour is plating over sterling silver and that plating wears with time.
Electroplated alloy
A base metal alloy with a plated finish. It is light and affordable, and it suits fashion jewellery. Our Fully-Set Tennis Bracelet in Electroplated Alloy explains that it will not last as long as sterling silver with everyday wear, and that alloy bracelets cannot practically be re-plated.
| Metal | Durability | Care | Typical price tier | What the label should say |
|---|---|---|---|---|
| 18ct gold | Rich colour, softer than 9ct | Polish occasionally | Highest | 18ct / 750; UK hallmark if over 1g |
| 9ct gold | Hard-wearing, paler colour | Polish occasionally | High | 9ct / 375; UK hallmark if over 1g |
| Sterling silver | Soft, tarnishes | Polish, store dry | Mid | Sterling / 925; UK hallmark if over 7.78g |
| Vermeil | Layer wears where it rubs | Avoid water, perfume, friction | Mid | Gold plated silver (vermeil) |
| Gold plated base metal | Thin layer wears soonest | As vermeil, gentler still | Low | Gold plated, with base metal named |
| Electroplated alloy | Fashion life span | Keep dry, store separately | Lowest | Alloy, plated; never "gold" or "silver" alone |
UK hallmarking weights and fineness figures are from the UK hallmarking guidance notes. If you have a metal sensitivity, check the full metal content, including what sits under any plating, and ask a professional for advice.
Stones: natural, lab-created and simulants
There are three groups, and the difference between them matters more than any grade.
- Natural. Formed in the earth and mined.
- Lab-created (lab-grown, synthetic). The same mineral as the natural stone, grown in a laboratory. A lab-grown sapphire is still sapphire.
- Simulants. Materials that, in GIA's words, "look like another gem" but have a different chemical composition and different properties. Cubic zirconia, moissanite (as a diamond substitute) and glass are all simulants.
The FTC guides require sellers to disclose lab-grown, synthetic, imitation or simulated stones clearly and with equal prominence. Look for those words next to the stone name, not hidden lower down the page. Our Freshwater Pearl and Blue Glass Necklace is a good example of careful labelling. Its supplier calls the beads Murano glass, but because there is no certification, the listing simply says "glass".
| Stone | What it is | Wear | Typical price tier | What the label should say |
|---|---|---|---|---|
| Natural diamond / sapphire | Mined mineral | Diamond 10, sapphire 9 on Mohs | Highest | Species; any treatment |
| Lab-grown diamond / sapphire | Same mineral, grown | As natural | Mid to high | "Lab-grown" or "lab-created" |
| Moissanite | Silicon carbide | 9¼ on Mohs, tough | Mid | Moissanite; not diamond |
| Cubic zirconia | Zirconium oxide simulant | Can be brittle; scratches with years of wear | Low to mid | Cubic zirconia / CZ |
| Glass | Simulant | Much softer; scratches and chips | Lowest | Glass, crystal or "imitation" |
Hardness figures for diamond, sapphire and moissanite are from GIA's guide to diamond alternatives, which also notes that CZ "can be somewhat brittle". For more detail, see our guides to choosing between natural and lab-grown gemstones and understanding gemstone treatments.
Leathers
The Leather Working Group's definitions are a helpful reference:
- Full-grain leather keeps its entire grain, with no surface removed.
- Corrected grain leather has had its grain partly buffed off and then finished. This is often what "top-grain" means.
- Split leather comes from the lower layers of the hide.
- Suede is leather or split leather that has been finished to a velvety nap.
- Bonded leather is made from reconstituted leather fibres.
The ASA advises that a product should not be called "leather" unless it is made entirely of leather. "Vegan leather" is not leather. The UK trade body Leather UK notes that most is PU or PVC.
Embossing is a pattern pressed into the surface. It can be applied to full-grain or corrected leather, so it tells you about the finish, not the grade. Our Embossed Floral Leather Crossbody Bag explains that its maker says only "genuine leather" and that this phrase does not mean full-grain. Our Suede Cowhide Top-Handle Handbag notes that suede usually comes from a split, so the listing does not claim full-grain. Our Litchi-Grain Vegan Leather Bucket Bag is PU. Its listing says it is lighter and shrugs off rain, but will not develop a patina, and lasts years rather than decades.
| Material | How it ages | Care | Typical price tier | What the label should say |
|---|---|---|---|---|
| Full-grain | Softens, develops patina | Condition occasionally; let it breathe | Highest | "Full-grain" and the animal |
| Corrected / top-grain | More uniform; patina less marked | Wipe clean | Mid | "Corrected" or "top-grain" |
| Suede / split | Marks with water and oil; flattens with rubbing | Brush; protect from rain | Mid | "Suede" or "split" |
| Bonded leather | Surface can peel | Gentle wipe | Low | "Bonded leather" with fibre content |
| Vegan (PU) | Stays uniform, then wears out | Wipe clean; water-tolerant | Low to mid | "PU", "polyurethane" or "faux leather" |
For a fuller comparison, see how to choose between leather and vegan leather.
Hair
Human vs synthetic. Cancer Research UK's wig guidance gives a useful general comparison. Synthetic wigs come ready-styled and cost less, but heat tools can melt the fibres, and they usually last 6 to 9 months. Real hair wigs cost more, can be restyled and recoloured like your own hair, and usually last 1 to 3 years.
Processed vs unprocessed. "Unprocessed" means the hair has not been chemically lightened, coloured or permed. Processing changes the fibre. A 2023 review in Polymers describes how bleaching makes the cuticle more porous and reduces tensile strength. Our Ombre Lace Front Human Hair Wig says the same in practical terms: its lighter lengths have been pre-lightened, are more porous, and need cool water and gentler heat. Claims such as "virgin" or "Remy" usually come from the supplier and are hard to verify. Our guide on how to tell if hair extensions are 100% human hair covers this.
| Hair | Styling | Care | Typical price tier | What the label should say |
|---|---|---|---|---|
| Human, unprocessed | Heat and colour (going darker is easiest) | Like your own hair | Highest | "100% human hair"; any origin or grade is a supplier claim |
| Human, processed (coloured, bleached, permed) | Heat with care; more porous | Sulphate-free, cool water, less heat | High | "100% human hair" plus the processing |
| Synthetic | Style is set in; heat can melt the fibres unless they are heat-resistant | Cold wash, air dry | Lowest | Fibre type; whether it is heat-resistant |
A quick checklist before you buy
- Is the core material named, not just its colour or finish?
- If it is plated, do you know what is underneath, and is a thickness given?
- Is each stone clearly natural, lab-grown or a simulant?
- Is the leather layer stated (full-grain, corrected, split, suede), or is it PU?
- Does the hair say human or synthetic, and has it been processed?
- Does the care advice fit how you will actually wear it?
Frequently asked questions
Is 9ct gold "real" gold?
Yes. It is solid gold alloy containing 37.5% pure gold. It is harder-wearing than 18ct but paler in colour.
Is vermeil better than gold plating?
Vermeil has sterling silver underneath, which is better than base metal, and under the US definition it has a thicker layer. It is still plating and will wear in time.
Is moissanite a fake diamond?
It is a real gemstone in its own right, but as a diamond substitute it counts as a simulant. It is not diamond, and it should never be sold as one.
Does "genuine leather" mean high quality?
It means only that the material is leather. Look for the layer (full-grain, corrected grain, split) to judge quality.
Choosing with clear eyes
No material is simply better than another. Each one is a trade-off between cost, durability, care and how it ages. What matters is that the label tells you which trade-off you are making. If one of our listings leaves a material question unanswered, check the product page first, then contact us before ordering.
Sources and further reading
- GIA — Guide to white, yellow and rose gold engagement rings
- GIA — White gold vs silver
- GIA — Jewelry buyer's guide to diamond alternatives
- GIA — An introduction to simulants or imitation gem materials
- US eCFR — FTC Guides for the Jewelry, Precious Metals, and Pewter Industries (16 CFR Part 23)
- GOV.UK — Permitted descriptions for gold plated silver articles in the UK
- GOV.UK — Hallmarking guidance notes
- Leather Working Group — List of definitions
- ASA — Making sure your ad isn't given a hiding
- Leather UK — The truth about vegan leather
- Cancer Research UK — Wigs, hats and scarves
- Fernandes et al., Polymers (2023) — On hair care physicochemistry (PubMed Central)
