Why You Can Trust Kataleya — Independently Lab Tested Jewellery
Why You Can Trust Kataleya
We know you’ve probably been burned before. A gold necklace that turned your skin green. Earrings that caused a rash. A ‘waterproof’ bracelet that tarnished after one shower. We hear it from our customers all the time — and it’s exactly why we do things differently.
At Kataleya, every claim we make is backed by independent, third-party laboratory testing. Not supplier promises. Not marketing language. Actual certificates from accredited testing facilities.
Here’s the proof.
✓ Independently lab tested to REACH safety limits
Our stainless steel jewellery is tested by RTS Test Co., Ltd — an independent, accredited testing laboratory based in Zhejiang, China, certified under ISO/IEC 17025. Samples are tested against EU and UK REACH regulations (EC No 1907/2006) — the same standards that apply to jewellery sold across Europe and the UK.
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Certificate of Compliance — Stainless Steel Earrings Certificate of Compliance · RTS25G53083SL · March 2025 Passed: Lead (Pb) · Cadmium (Cd) · Nickel Release · EU REACH Regulation EC No 1907/2006 |
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Certificate of Compliance — Stainless Steel Necklaces Certificate of Compliance · RTS25G52836SL · March 2025 Passed: Lead (Pb) · Cadmium (Cd) · Nickel Release · EU REACH Regulation EC No 1907/2006 |
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Certificate of Compliance — Stainless Steel Rings Certificate of Compliance · RTS25G53080SL · March 2025 Passed: Lead (Pb) · Cadmium (Cd) · Nickel Release · EU REACH Regulation EC No 1907/2006 |
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REACH Test Report — Stainless Steel Necklaces & Chains Test Report · RTS24G52794SL / RTS24G52796SL / RTS24G52798SL / RTS24G52850SL · October 2024 Passed: Lead (Pb) · Cadmium (Cd) · Nickel Release · N.D. (Not Detected) across all nickel trials |
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Salt Spray Test — Corrosion & Water Resistance Test Report · RTS25S25759SL · May 2025 Tests the resistance of stainless steel jewellery to saltwater corrosion — independent verification of water resistance claims |
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REACH Test Report — Hypoallergenic Compliance Test Report · RTS25S27903SL · June 2025 Passed: Lead (Pb) · Cadmium (Cd) · Nickel Release · EU REACH Regulation EC No 1907/2006 |
What these tests actually mean for you
We know certificates can feel technical, so here’s what each test means in plain English:
No nickel release detected
Our necklace and chain nickel release tests (BS EN 1811) showed N.D. — Not Detected — in every trial, and our earrings and rings passed the same test. This means no measurable nickel was released from the tested jewellery into artificial sweat. For anyone with sensitive skin or a nickel allergy, this is the result that matters most.
Lead and cadmium free
Both heavy metals that can be harmful with prolonged skin contact. Our pieces passed both tests, meaning you’re not wearing anything that contains dangerous levels of either substance.
Salt spray tested
Salt spray testing simulates prolonged exposure to saltwater and sweat — it’s the industry standard for testing corrosion resistance and water durability in metal jewellery. Our stainless steel pieces passed this test, supporting our waterproof and tarnish-free claims.
Tested to UK & EU REACH limits
UK and EU REACH regulations set strict legal limits on how much nickel, lead and cadmium jewellery can contain or release. Our certificates of compliance confirm that the earrings, necklaces and rings we had tested meet those limits.
Our materials
Every Kataleya piece is made from one of two materials:
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Gold plated pieces |
High-grade stainless steel with gold plating, independently tested for nickel release, lead and cadmium under UK and EU REACH limits. No nickel release detected in our laboratory tests. Well suited to sensitive skin. |
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Sterling silver pieces |
925 sterling silver — 92.5% pure silver, marked with the 925 hallmark. Independently tested under EU REACH regulations. Suitable for sensitive skin. |
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What we never use |
Brass, copper base metals, or any material we cannot verify. We only source from suppliers who provide independent testing documentation. If we can’t confirm what’s in it, we don’t sell it. |
Caring for your Kataleya jewellery
Our pieces are designed to be worn every day — and they are built to last. However, to keep them looking their best for as long as possible, we recommend:
• Remove before contact with strong chemicals — bleach, chlorine pools, harsh cleaning products
• Avoid spraying perfume or hairspray directly onto your pieces
• Store in the pouch or box provided when not wearing
• Clean gently with a soft dry cloth
Our pieces are safe in the shower, sea, and sweat (as confirmed by our salt spray test) — but strong chemicals can affect any metal over time, which is why we include aftercare guidance with every order.
What our customers say
Don’t just take our word for it. Here’s what real Kataleya customers have shared:
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“Excellent service. Super pleased!! The necklaces, the packaging, the love that was put into everything.” — Verified Trustpilot review |
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“Beautiful quality jewellery. Lovingly packaged. Fast shipping and prompt communication from seller.” — Verified Trustpilot review |
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“I just received my beautiful earrings and have had 2 compliments already this morning!” — Verified Trustpilot review |
Read all our reviews on Trustpilot
Shop with complete confidence
Every piece you buy from Kataleya comes with:
• Independent lab certification from RTS Test Co., Ltd
• Nickel release tested to BS EN 1811 for earrings, necklaces and rings
• REACH regulation compliance — nickel, lead and cadmium tested
• Salt spray tested water resistance
• Aftercare guidance included with every order
Shop the Kataleya collection → kataleya.co.uk
