Quality Assurance

 

At Sidr & Stone, quality isn't negotiable. Our Black Seed Oil undergoes rigorous third-party testing to verify purity, potency, and authenticity — because you deserve to know exactly what you're putting in your body.

🔬 Independent Lab Testing

We partner with Analytice, an ISO 9001 certified laboratory in France, to independently verify our oil's thymoquinone (TQ) content — the key active compound responsible for black seed oil's therapeutic properties.

Testing Methodology

Our oil is analysed using HPLC-UV (High-Performance Liquid Chromatography with Ultraviolet Detection) — a gold-standard analytical technique that precisely measures thymoquinone levels with ±5% accuracy.

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📄 View Our Lab Certificate

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🌍 Why Ethiopian Seeds?

Not all black seed oil is created equal. We source exclusively from Ethiopia, where the climate and soil produce Nigella sativa seeds with naturally elevated thymoquinone levels — often 2-3x higher than seeds from other regions.

Ethiopian black seeds are:

• Grown in high-altitude regions with optimal growing conditions
• Hand-selected for size, color, and oil content
• Cold-pressed within weeks of harvest to preserve freshness

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❄️ Cold-Pressed & Chemical-Free

Our oil is extracted using traditional cold-pressing methods — no heat, no chemical solvents, no shortcuts. This preserves:

• Essential fatty acids (Omega-3, Omega-6, Omega-9)
• Volatile oils and aromatics
• Naturally occurring vitamins and minerals

The result? Oil that looks, smells, and tastes as nature intended.

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🏺 Protected for Freshness

Black seed oil is sensitive to light and air, which can degrade its active compounds. That's why we package our oil in:

• UV-protected matte black glass bottles to block damaging light
• Airtight seals to prevent oxidation
• Premium glass for maximum preservation

Store your bottle in a cool, dry place away from direct sunlight, and it will maintain peak potency for 12-18 months after opening.

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📋 Batch Transparency

Every bottle is traceable to its source. If you'd like batch-specific information for your order, contact us at info@sidrstone.com with your order number.