2026 Coloured Gemstone Market: Trends, Ethics and SICO International’s Expertise

The demand for rare coloured gemstones – especially rubies and sapphires – is surging in 2026. Global market research predicts the coloured gemstone sector will more than double by 2035, growing from about $1.9 billion today to $5.7 billion. Consumers and investors are eager for unique, high-quality gems, driving this continued boom. As one industry expert notes, “the market for coloured gems in 2026 looks strong, with retail demand… particularly for rare and high-quality stones”.

Partly, this reflects a shift away from traditional diamonds: buyers now seek individuality and long-term value, and coloured stones capture both. These trends directly align with SICO International’s focus: as a London-based gemstone expert, SICO sources and supplies precisely these exceptional gems.

Surge in Demand for Rare Coloured Gemstones

Among the top names in coloured gemstones are rubies and sapphires. Dealers report that rare, richly saturated rubies (for example from Mozambique or Burma) were standout performers in 2025, with that momentum continuing strongly into 2026. In the bridal and luxury segments especially, jewellers note that vivid sapphires and rubies are continuing to “steal the spotlight” this year.

High-net-worth clients increasingly view such gemstones as a safe-haven investment. They offer a tangible asset and portfolio diversification. For example, investment-quality sapphires and rubies, often over 10 carats, have become highly sought-after ways to hedge against market uncertainty, complementing stocks or property.

This market shift plays to SICO International’s strengths. The firm is proud of its 28-year legacy and global sourcing network, with buying offices in Sri Lanka and Thailand. As SICO’s About page highlights, with over two decades of experience it “procures the finest, rarest and most precious gemstones, specialising in Rubies and Sapphires”.

In fact, SICO International is one of London’s largest loose gemstone dealers, based in Hatton Garden, specialising in rubies, sapphires and other rare coloured gems. The team, led by gem expert Anthony Aziz, curates exceptional pieces ranging from 0.3 carat stones to over 10 carats, meeting the exacting standards of modern collectors. Every gemstone is hand-selected and meticulously certified, ensuring investors and designers receive only top-tier quality.

Ethical Sourcing and Certification

Alongside demand for rarity, ethical sourcing remains a defining priority in 2026. Consumers and brands expect full transparency regarding a gemstone’s origin and treatment. Industry insights highlight that ethical practices and sustainability “play pivotal roles in the gemstone industry, ensuring transparency and accountability throughout the supply chain”.

Buyers increasingly favour gemstones sourced through fair-mining practices, with responsible environmental and labour standards. This growing awareness continues to fuel market expansion and reshape purchasing decisions.

SICO International reflects this commitment through rigorous certification and responsible sourcing. The company provides world-renowned certificates, often two or three per stone, from respected laboratories such as GRS, Gübelin and SSEF. These verify key attributes including carat, clarity and origin.

Through long-standing relationships in Sri Lanka, Thailand and Africa, SICO helps ensure gemstones are mined and traded responsibly. This approach directly supports the industry’s shift toward transparency, sustainability and trust.

Recent trends in the supply of rare gemstones align closely with SICO International’s inventory. The company regularly sources exceptional specimens, including unheated Mozambican rubies and rare Madagascan sapphires, that are increasingly difficult to find. By staying ahead of demand for unique, investment-grade stones, SICO ensures its clients have access to the most sought-after gemstones shaping the market in 2026.

To discuss your gemstone requirements, contact Anthony Aziz at SICO International today.