At AJLuxe, our diamond-inspired necklaces deliver all the brilliance you'd expect from fine jewelry — without the eye-watering price tag. Every piece is set with hand-selected cubic zirconia (CZ) sto…
At AJLuxe, our diamond-inspired necklaces deliver all the brilliance you'd expect from fine jewelry — without the eye-watering price tag. Every piece is set with hand-selected cubic zirconia (CZ) stones, precision-cut to replicate the optical properties of natural diamonds, and mounted in 18K gold plated over 925 sterling silver. The result is a necklace that catches the light beautifully, sits comfortably against the skin, and holds its finish through everyday wear.
We believe you shouldn't have to choose between sparkle and sensibility. CZ diamond necklaces are the savvy modern choice — visually indistinguishable from mined diamonds to the naked eye, hypoallergenic, conflict-free by nature, and a fraction of the cost. Whether you're dressing up a boardroom look, gifting something memorable, or exploring bridal-adjacent styles without the commitment of fine-diamond prices, our collection has a piece for every occasion.
Here's how cubic zirconia stacks up against natural diamonds across the criteria that matter most:
| Factor | CZ Diamond (AJLuxe) | Natural Diamond |
|---|---|---|
| Appearance | Visually near-identical to untrained eye; high refractive index creates brilliant sparkle | Natural inclusions visible under magnification; considered the benchmark for brilliance |
| Hardness (Mohs) | 8.5 — durable for everyday jewelry wear | 10 — hardest natural material; more scratch-resistant long-term |
| Price per carat | Pennies per carat — accessible for any budget | $1,500–$15,000+ per carat depending on cut, clarity, colour, carat |
| Maintenance | Easy — warm water, mild soap, soft cloth; no specialist cleaning required | Ultrasonic cleaners recommended; professional cleaning advised annually |
| Ethical & eco footprint | Lab-created; zero mining impact, conflict-free by nature | Requires significant mining; ethical sourcing requires Kimberley Process certification |
Diamond prices have climbed steadily over the past decade, while CZ technology has quietly reached the point where even experienced jewellers need a loupe to tell the two apart. For everyday jewellery — pieces you'll actually wear rather than keep locked in a safe — the practical case for CZ is compelling. You get the same visual impact at a fraction of the investment, and if a stone is ever lost or damaged it can be replaced without heartbreak. Our pendants range from classic solitaire silhouettes and tennis-style necklaces to layered cluster drops and delicate pavé settings, so there's a style to match any wardrobe or gift occasion.
Choosing CZ is also an intentional ethical choice. Every stone in our collection is created in a controlled laboratory environment, meaning zero land disruption, zero risk of conflict-origin supply chains, and a dramatically lower carbon footprint than mined diamonds. If sustainable, conscious buying is important to you, CZ is simply the smarter option.
Every AJLuxe diamond-necklace is built on a 925 sterling silver base — the same foundation used by premium jewellery houses worldwide. Sterling silver (92.5% pure silver) gives the piece structural integrity and a tarnish-resistant core that holds its shape over years of wear. On top of that base we apply an 18K gold plating, which adds the warm gold lustre or white-gold finish you see in the product photography. The combination means you get a necklace that is both nickel-free and hypoallergenic: safe for sensitive skin without compromise on aesthetics.
Our CZ stones are hand-set rather than machine-set where possible, and each goes through a quality check before leaving our fulfilment centre. We specify a minimum clarity grade to ensure the stones are eye-clean — no cloudy centres, no visible bubbles, just clean, brilliant sparkle that photographs beautifully and looks equally impressive in person.
Everyday wear: A small solitaire CZ pendant on a 16-inch chain is the definition of effortless. It layers well with longer necklaces, sits neatly under a collar, and transitions from morning meetings to evening outings without any styling effort. The gold-plated finish adds just enough warmth to complement both cool and warm skin tones.
Gifting: A CZ diamond necklace is one of those universally well-received gifts — it reads as considered and luxurious without requiring you to second-guess her taste. Our gift-ready packaging makes the unboxing experience part of the gift. Popular choices for gifting include our pavé pendant styles and our round-brilliant solitaires, which mirror classic engagement-adjacent jewellery at a fraction of fine-jewellery prices.
Bridal-inspired looks: CZ tennis necklaces and multi-stone drop pendants are increasingly popular for brides who want maximum sparkle for their wedding day without wearing their entire year's savings around their neck. The stones photograph brilliantly under flash, and many brides choose to gift bridesmaids a matching piece — something that would be impossible at real-diamond prices.
No. Cubic zirconia (CZ) is a lab-created crystalline material, while natural diamonds are carbon-based minerals formed deep within the earth over billions of years. CZ looks visually very similar to diamond to the naked eye — both are colourless with high brilliance — but they differ in hardness (diamond Mohs 10 vs CZ Mohs 8.5), chemical composition, and price. A gemologist with a loupe can distinguish the two, but for everyday jewellery wear the difference is largely academic.
The CZ stones themselves do not tarnish or change colour. The chain and setting are made from 925 sterling silver with 18K gold plating, which resists tarnishing significantly better than brass-based alternatives. With normal care — removing before swimming or showering, storing in a dry place — you can expect the gold plating to maintain its appearance for 12–24 months of regular wear before a re-plate might be considered. The silver base underneath will never turn your neck green.
Both are diamond alternatives, but moissanite (silicon carbide) is harder (Mohs 9.25), has a higher refractive index that creates a distinctive rainbow "fire," and costs significantly more than CZ — though still far less than natural diamond. CZ has a refractive index closer to diamond, so it produces a more neutral brilliance that mimics the look of diamond more faithfully. Moissanite's extra fire can be beautiful but is also the giveaway to a trained eye. For a clean, classic diamond-look necklace at an accessible price, CZ is the better choice.
Our necklaces use 18K gold plating over 925 sterling silver, which is one of the most durable combinations available in the plated-jewellery category. With everyday wear and proper care (avoiding prolonged contact with perfume, chlorine, and saltwater; patting dry after any moisture exposure) you can expect the plating to remain vibrant for 12–24 months. The sterling silver base means that even if the plating wears in the highest-contact areas, the piece remains structurally sound and can be re-plated by a local jeweller at low cost.
Yes. Our necklaces are built on a 925 sterling silver base with nickel-free 18K gold plating, making them suitable for sensitive skin. Nickel is the most common cause of jewellery-related skin reactions, and we deliberately exclude it from our production process. If you have a known silver or gold allergy (rare but possible), please check with your GP before wearing any metal jewellery.
Yes, with sensible habits. CZ (Mohs 8.5) is hard enough to withstand daily wear without scratching from normal contact with clothing or skin. The key daily-wear tips are: put your necklace on after applying perfume and hairspray; remove it before swimming, showering, or exercise; and store it in a soft pouch or jewellery box when not wearing it. Following these habits will maximise the life of both the CZ stone and the gold plating.
Fill a small bowl with warm (not hot) water and a drop of mild dish soap. Place the necklace in the solution and let it soak for 5–10 minutes. Use a soft toothbrush to gently clean around the stone setting, then rinse thoroughly under running water and pat completely dry with a soft, lint-free cloth. Avoid ultrasonic cleaners, harsh chemical cleaners, and abrasive cloths, which can damage the plating. A clean every 2–4 weeks will keep your CZ sparkling like the day you bought it.
Yes — this is one of CZ's genuine advantages over mined diamonds. Cubic zirconia is created entirely in a laboratory environment, which means no open-pit mining, no land displacement, and no risk of conflict-origin supply chains (so-called "blood diamonds"). The manufacturing process uses a fraction of the resources required for diamond mining. If ethical sourcing and environmental impact matter in your purchasing decisions, CZ is the responsible choice without any compromise on the look you want.
For more context on our materials and what gold plating really means for your jewellery, read our guide on gold types and plating — it covers the difference between 10K, 14K, and 18K gold, and explains exactly what "18K gold plated over 925 sterling silver" means in practice.
No — none of the pieces in this collection are genuine diamond. 9 of 10 use cubic zirconia; one has no stone at all. See diamond alternatives for how CZ compares to other options.
Moissanite has more fire and brilliance and holds up better long-term; CZ is more affordable but can cloud with years of wear. See moissanite vs diamond necklace for the fuller comparison.
9 of these 10 styles are in stock now. We hold our own inventory rather than dropshipping, so anything listed as available is on our shelves and ready to ship.
Orders placed before 12pm EST ship the same day; everything else ships the next business day. Delivery inside the USA takes 3–5 days from dispatch, and shipping is free with no minimum order.
No. Cubic zirconia (CZ) is a lab-created crystalline material, while natural diamonds are carbon-based minerals formed deep within the earth. CZ looks visually very similar to diamond to the naked eye — both are colourless with high brilliance — but they differ in hardness (diamond Mohs 10 vs CZ Mohs 8.5), chemical composition, and price.
The CZ stones themselves do not tarnish or change colour. The chain and setting are made from 925 sterling silver with 18K gold plating, which resists tarnishing significantly better than brass-based alternatives. With normal care the gold plating maintains its appearance for 12–24 months of regular wear.
Our necklaces use 18K gold plating over 925 sterling silver. With everyday wear and proper care — avoiding prolonged contact with perfume, chlorine, and saltwater — you can expect the plating to remain vibrant for 12–24 months. The sterling silver base means the piece remains structurally sound and can be re-plated by a local jeweller at low cost.
Most are. Our necklaces are built on a 925 sterling silver base with nickel-free 18K gold plating, making them suitable for sensitive skin — nickel is the most common cause of jewellery-related skin reactions, and we deliberately exclude it from that base. One piece, the Round Halo Pendant Necklace, uses 316L stainless steel instead; it's also hypoallergenic but not nickel-free, since nickel is alloyed into 316L steel itself rather than added as a coating.
Yes, with sensible habits. CZ (Mohs 8.5) is hard enough to withstand daily wear. Key tips: put your necklace on after applying perfume and hairspray; remove it before swimming, showering, or exercise; store it in a soft pouch or jewellery box when not wearing it.
Use warm water with a drop of mild dish soap, soak for 5–10 minutes, gently brush with a soft toothbrush around the stone setting, rinse thoroughly, and pat dry with a soft lint-free cloth. Avoid ultrasonic cleaners, harsh chemicals, and abrasive cloths. Clean every 2–4 weeks to keep CZ sparkling.
Yes. Cubic zirconia is created entirely in a laboratory — no open-pit mining, no land displacement, and no risk of conflict-origin supply chains. The manufacturing process uses a fraction of the resources required for diamond mining, making CZ the responsible choice without compromising on appearance.
9 of these 10 pieces use cubic zirconia; the Circle Heart Necklace has no stone at all. See diamond alternatives for how CZ compares to genuine diamond and other simulants.
Cubic zirconia can cloud with heavy wear if exposed to lotion, perfume or chlorine. See how to clean CZ jewelry for upkeep tips.
9 of 10 in stock — 355 reviews sit at a 4.52 average across the collection.
Anything unworn can be returned within 30 days, and shipping is free in the USA both ways with no minimum order.
The guides shoppers open most before choosing this piece.
