Luxury jewelers in Helsinki source their gemstones and precious metals through direct relationships with verified suppliers, personal attendance at international trade shows, and rigorous in-house gemological assessment. The quality of these sourcing decisions determines everything: the beauty, integrity, and lasting value of every piece that leaves the atelier. The sections below address the most important questions about how this process works, from initial selection through to the final price of a finished piece.
Where do luxury jewelers source their gemstones?
Luxury jewelers source their gemstones by selecting stones directly from trusted trade partners, attending international gem fairs, and in some cases working with specialist suppliers for rare or exceptional stones. Direct sourcing, rather than purchasing through intermediaries, gives the jeweler full control over quality and provenance. At our Helsinki atelier, every stone is individually selected by our team.
Tina and Jenny Tillander personally attend trade shows to find new gemstones and pearls, including unique individual pieces that would never appear in a standard catalogue. This hands-on approach means the selection at any given time reflects genuine curation rather than wholesale purchasing. For custom commissions requiring a rare coloured gemstone or an exceptional diamond, we may source from specialist suppliers, which can add a few weeks to the production timeline.
Our gemstone range reflects a deliberate emphasis on color. Rubies, emeralds, and sapphires form the traditional core, with sapphires available across a wide spectrum including blues, yellows, oranges, and violets. Beyond these classics, we work with morganites, beryls, and tourmalines, including the rare neon Paraíba tourmaline. For diamonds, the options extend to natural stones, lab-grown diamonds, and so-called Ocean Diamonds collected from the seabed. We also design pieces around customers’ own gemstones, which adds a personal dimension to the sourcing process entirely.
What certifications and standards govern gemstone quality?
Gemstone quality is governed by internationally recognized grading standards, most notably those established by the Gemological Institute of America. For diamonds, the GIA’s 4Cs framework, cut, colour, clarity, and carat weight, provides an objective basis for assessment. Independent laboratories including GIA, SSEF, and Gübelin issue certificates that verify a stone’s characteristics and disclose any treatments.
At our atelier, in-house gemological expertise underpins every sourcing decision. Jenny Tillander graduated from the GIA as a certified gemologist in 2017, and gemology runs through multiple generations of our family. Our team includes five gemologists in total, ensuring that every stone is assessed with both technical precision and accumulated experience. Our standard for diamonds is Triple Excellent cut, and all diamonds over 0.30 carats come with a GIA certificate.
For coloured gemstones, evaluation is more nuanced. A gemologist considers hue, saturation, tone, geographic origin, and treatment history. Heat treatments in rubies or natural inclusions in emeralds, for example, affect both quality and value in ways that only trained assessment can reliably identify. Certification from a recognized laboratory provides essential documentation, verifying authenticity and disclosing any treatments according to international standards. For pearls, natural examples are exceptionally rare and, when used, carry a gemological certificate that includes X-ray images as proof of origin.
How do jewelers ensure ethical and responsible sourcing?
Ethical gemstone sourcing requires jewelers to work only with transparent, verified supply chains and to take active responsibility for the origins of every material used. This means choosing suppliers who share the same values, disclosing material origins where possible, and participating in industry-wide frameworks that hold the trade to higher standards.
We are part of the Copenhagen Commitment, an international network dedicated to setting a new standard for ethics and sustainability in the jewelry industry. Our commitment to responsible practice is not limited to a policy statement; it shapes material choices across the entire atelier. We use recycled gold for all our gold materials, and we carefully select every raw material with sustainability in mind.
Our Transparency collection makes this philosophy explicit. Every piece in the collection is handmade at our Helsinki workshop, and materials are sourced from suppliers who share our values. The collection features ecologically sourced Vietnamese Akoya pearls and natural-coloured sapphires ethically mined from Ilakaka, Madagascar, with named origins disclosed to customers. This level of traceability is a direct response to greenwashing in the broader industry.
Saltwater pearls also carry an inherent environmental logic: pearl oysters only thrive in clean, unpolluted water, which gives pearl farms a direct incentive to protect their marine environments. Our Vintage Tillander sub-brand extends responsible sourcing further still, by giving new life to existing high-quality pieces and bypassing the need for new resource extraction altogether.
What precious metals do luxury jewelers use and where do they come from?
Luxury jewelers work primarily with 18-carat gold and platinum. These metals offer the combination of durability, workability, and aesthetic quality that fine jewelry demands. Gold is available in yellow, white, and rose variations; platinum is valued for its natural whiteness, density, and resistance to wear. Both metals are used in their purest practical forms to ensure longevity in finished pieces.
At our atelier, we use 750-millieme (18-carat) yellow and white gold and 950-millieme platinum as our standard metals. The 18-carat gold alloy is well-suited to handcrafted work: it is responsive to the goldsmith’s tools and takes a beautiful polish. White gold is alloyed with palladium and often finished with rhodium plating to enhance brightness, while rose gold achieves its warm tone through a higher copper content.
Platinum occupies a distinct position among precious metals. It requires no plating because its natural color is immediately visible, and it holds gemstone settings with exceptional security due to its density. Our goldsmiths are experienced in working with this technically demanding material, which commands a higher price than gold, both because of its rarity and the greater quantity required to achieve the same piece weight.
All gold used at our atelier is recycled, in line with responsible industry practice. While we do not publicly detail every step of our metal supply chain, the commitment to recycled gold reflects a broader approach to minimizing environmental impact across all jewelry materials we use.
How are pearls selected and graded for fine jewelry?
Pearls for fine jewelry are graded according to lustre, surface quality, shape, size, and color. The highest quality pearls display a thick, radiant nacre layer, a smooth surface, and a round or near-round shape. Lustre is considered the most important indicator: a strong, reflective sheen signals both quality and durability in the finished piece.
The main pearl varieties used in luxury jewelry each have distinct characteristics. Akoya pearls, cultured in Japanese saltwater, are prized for their round shape and exceptional lustre. Our collectible pearl range features AAA-grade Akoya pearls, the highest available grade. Tahitian and South Sea pearls are larger and available in round, drop, and baroque shapes, with colors ranging into very dark tones with a metallic shimmer. Freshwater pearls are more accessible in price, recognizable by a slightly elliptical shape and a softer, more matte lustre.
All pearls we use are cultivated; natural pearls are exceptionally rare and, when used, require gemological certification including X-ray documentation. Tina and Jenny personally select pearls at trade shows, which means the pieces available at our atelier reflect direct expert judgment rather than catalogue purchasing. The Transparency collection takes this further, featuring Vietnamese Akoya pearls cultivated as organically as possible, with traceable origins disclosed to the customer.
How does sourcing affect the final price of a luxury jewelry piece?
Sourcing decisions are one of the primary drivers of price in luxury jewelry. The type of metal chosen, the quality and rarity of the gemstones, and the complexity of obtaining specific materials all contribute directly to the final cost. Higher-quality materials require more rigorous sourcing, and that process has a price.
Within diamonds alone, the 4Cs create a wide price range even between stones of identical carat weight. A one-carat diamond of exceptional cut, color, and clarity will cost considerably more than a one-carat stone of lower grades. Similarly, certain coloured gemstones, such as fine rubies or Kashmir sapphires, are among the most valuable materials available in jewelry. Lab-grown diamonds, by contrast, typically cost significantly less than natural diamonds of comparable quality, offering buyers the option to either reduce cost or acquire a larger stone within the same budget.
Metal choice also affects price in meaningful ways. Platinum commands a premium over gold due to its greater density and rarity; more material is required to produce the same piece, and the metal itself is more costly per unit. For bespoke rings and other custom commissions, the sourcing process itself can add to the timeline and cost when rare stones need to be located from specialist suppliers.
Certified materials, particularly certified diamonds, also carry a value premium that is worth understanding. A grading certificate from GIA or an equivalent laboratory serves as a permanent identity document for the stone, providing confidence at the point of purchase and supporting resale value over time. At our atelier, this transparency in sourcing is not a luxury add-on; it is a standard we apply to every piece we create.