All Swavo products are handmade by skilled artisans. There may be a slight colour variation in the gemstone, settings and molds from those chosen by the clients.
Most gemstones are allochromatic, meaning that they are colored by impurities or trace elements in their crystal structure. For example, pure corundum is colorless. But corundum is typically red when traces of chromium are present and blue when there are traces of titanium.
Variation in gemstone colours can result from different trace elements; the green of an emerald can be the result of chromium or vanadium (or both). In other cases, a single trace element can produce different colors in different gem varieties.