We only use semi precious gemstones that are completely natural. Each gemstone is cut exclusively and precisely to Lisa’s design specifications. Inspired by the simplicity of antique old cut cushions, classic ovals and distinctive movals. This faceting technique enhances the gorgeous array of colours, lustre and spectacular beauty of the natural stones. The semi-precious stones are sourced from all over the world by a reputable gem dealer and gemologist with 25 years experience and longstanding relationships with all the suppliers. We do not use synthetic stones of any kind or gemstones which have been fracture filled with resin, glass or had any sort of surface coating or treatment that may be unstable. To the best of our knowledge all our stones come from non conflict sources/regions and are free from human rights abuses, this is based on personal knowledge and written assurances from our suppliers.
Some of the stones display natural inclusions which is a general term for visible marks within the gemstone and include minerals, crystals, liquid and gas filled cavities. These inclusions are often highly characteristic of the mineral of gem concerned and form the basis of the distinction between natural and synthetic stones. We do not consider them to be a flaw but part of the unique and individual personality of each stone.
Citrine, Blue Topaz, Lavender Quartz, Prasiolite, Ruby and Sapphire may be heated or modified by irradiation to improve and maintain uniformity of colour across the range. These treatments are widely used and acceptable in the world of gemstones.
Emeralds may be treated with oil to improve clarity.
Within the industry, most Tourmalines are heated to improve colour and it is very difficult to tell whether this process has occurred in nature or by a man made process. (even our most experienced gemologist with 49 years experience can’t always tell!). While some that we receive will be unheated we have to assume that at least 50% are, unless we have specific information from the supplier that they are definitely unheated.
Amethyst, Peridot, Iolite, Rhodolite Garnet, White Topaz, White Beryl, Green Tsavorite, Pink Spinel, Purple Garnet, Smokey Quartz, Spessartine, Chrysoberyl, Malaya Garnet and Zircon are rarely treated.