The Timeless Allure of Rubies & Sapphires: A Gemstone Lover’s Guide by SICO International
- Sico International
- Apr 1
- 2 min read

At SICO International, we pride ourselves on offering an exquisite selection of precious gemstones, with a particular emphasis on rubies and sapphires. Our commitment to quality and authenticity ensures that each gemstone we provide meets the highest standards, making them perfect for both collectors and those seeking timeless elegance.
Renowned for their captivating red hues, rubies symbolize passion, protection, and prosperity. Our collection primarily features rubies sourced from Mozambique, ranging from 0.30 carats to significant pieces up to 15 carats. Mozambique rubies are celebrated for their deep, rich reds with subtle hints of purple or brown, reflecting the unique geological conditions of their origin. Additionally, we offer select natural rubies from Burma and Thailand (formerly known as Siam), each possessing distinct characteristics that contribute to their rarity and value.

Sapphires, members of the corundum family like rubies, are most commonly recognised for their mesmerising blue shades. Our sapphires hail from the gem-rich regions of Sri Lanka and Madagascar, available in sizes ranging from 0.30 to 20 carats. While blue is the most sought-after color, sapphires also occur in pink, yellow, green and brown varieties, each offering a unique allure. The value of a sapphire is influenced by its origin, color intensity and carat weight, with certain sources being particularly esteemed for their velvety blue specimens.

Understanding the importance of trust and transparency in the gemstone industry, we ensure that many of our gemstones are accompanied by certifications from world-renowned laboratories, including GRS, Gubelin, SSEF, and C. Dunaigre (Swiss) Laboratories. These certifications provide our clients with confidence in the quality and authenticity of their chosen gemstones.
The SICO International Difference
With over 26 years of experience and buying offices in Colombo (Sri Lanka) and Chantaburi (Thailand), SICO International has established itself as a leading loose gemstone dealer in London. Our extensive network and deep industry knowledge enable us to source the finest and rarest colored gemstones available worldwide. Whether you're seeking a vibrant Mozambique ruby or a serene Sri Lankan sapphire, our collection offers unparalleled quality and variety.
Caring for Your Precious Ruby & Sapphire Gemstones
To maintain the enduring beauty of your rubies and sapphires, proper care is essential. It's advisable to clean your gemstones regularly using mild soapy water and a soft brush, avoiding harsh chemicals that could damage the stone. Additionally, storing your gemstones separately can prevent scratches and preserve their brilliance for generations to come.
Conclusion
At SICO International, our passion for precious gemstones drives us to provide our clients with exceptional quality, authenticity and service. Whether you're a seasoned collector or new to the world of gemstones, we invite you to explore our collection and experience the timeless allure of our rubies and sapphires.
Discover rare and exquisite gemstones at SICO International, London's leading loose gemstone dealer. Explore our exclusive collection of rare rubies, sapphires, and other precious gems, sourced from the world's finest mines. Shop with confidence and authenticity. If you're looking for a unique gemstone, contact SICO International today!
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