The Royal Blue Designation Premium
The Royal Blue Designation Premium
How a laboratory colour grade translates into measurable price uplift in the sapphire market
The Royal Blue designation premium is the price increment associated with a laboratory-issued Royal Blue colour designation on a sapphire grading report. The designation is offered principally by GRS (Gem Research Swisslab) and Lotus Gemology, two coloured-stone laboratories that grade sapphires against proprietary colour-reference cells defining the medium-dark, vividly saturated blue range. A Royal Blue grade on the report supplies a recognisable benchmark that the trade prices into the stone, and the premium is one of the more measurable effects of formal colour grading in the coloured-stone market.
The grading framework
Both GRS and Lotus operate proprietary colour-reference systems that define Royal Blue against benchmarks for hue, tone, and saturation. GRS publishes its colour cells in a chart used internally and shared with trade clients; Lotus uses a master-stone reference set against which the laboratory compares submitted material. The criteria are conservative: the laboratory will decline to issue the Royal Blue grade on a stone that falls just outside the cell, and the proportion of submitted blue sapphires that qualify for the grade is small.
The grade is a binary outcome on the report — Royal Blue is either issued or it is not. There is no intermediate or partial designation. Stones that fall just outside the criteria carry a descriptive colour narrative on the report but no formal grade.
What the premium looks like in practice
For Burmese sapphires, the Royal Blue designation typically adds a substantial premium to per-carat prices, with the size of the premium depending on origin, treatment status, and underlying quality. For Sri Lankan sapphires, where origin alone carries less marketing weight than Burmese, the Royal Blue designation often provides a larger proportional premium because the colour grade becomes the primary selling point. For Madagascar material, the premium is smaller in absolute terms but still meaningful at larger sizes and finer qualities.
The premium is most pronounced at the upper end of the size and quality range. For a one-carat heated sapphire from a generic origin, the cost of obtaining a GRS or Lotus report and the marginal premium for the grade may not justify the additional certification expense. For a five-carat unheated Burmese sapphire with fine colour, the Royal Blue grade is essentially a requirement of the upper market and the premium is well-established.
Why the trade prices the grade
Three factors support the premium. First, the grade reduces uncertainty: a Royal Blue designation tells a buyer that a recognised laboratory has placed the stone within a defined colour band, removing some of the subjectivity that otherwise dominates coloured-stone valuation. Second, the grade aligns with auction-house and dealer cataloguing conventions: stones with the formal grade are marketed using standardised language and benchmark prices, which supports liquidity. Third, the grade has marketing value at the consumer end: end clients recognise the designation, and retailers can use it as a justification for higher pricing.
Limits and caveats
The Royal Blue designation does not guarantee that a stone is at the top of its quality range. Within the Royal Blue cell, stones vary considerably in clarity, cut, size, and the specific position within the colour band. A low-clarity stone with a Royal Blue grade trades below a high-clarity stone with the same grade, and a poorly cut Royal Blue trades below a well-cut equivalent. The grade is a colour benchmark, not a comprehensive quality grade.
Buyers should also recognise that GRS and Lotus apply slightly different criteria to the grade. A stone that qualifies for one laboratory's Royal Blue may fall just outside the other's. Stones bearing the grade from one laboratory but not the other are not uncommon and are described in catalogues by the laboratory that issued the grade.
Comparison with other colour designations
Royal Blue is one of several proprietary colour designations issued by coloured-stone laboratories. Pigeon's blood is the equivalent designation for ruby, also issued by GRS, Lotus, and SSEF. Vivid green is the analogous designation for emerald at GRS. Each designation operates within its species' colour-reference framework and follows similar logic in market pricing: a laboratory benchmark within the optimal colour band that supports a measurable trade premium.
In the trade
For sapphire dealers and clients, the Royal Blue designation is one of the small group of laboratory grades that justifies its certification cost on most stones above modest size and value. The premium it supports is real, well-established in dealer and auction-house pricing, and durable across market cycles. Buyers commissioning grading on stones in the medium-dark blue range should consider GRS or Lotus reports specifically when the colour appears to fall within the Royal Blue band; for stones clearly outside the band, descriptive narrative reports from any major laboratory are sufficient.