Precious moments is a series that uses semi-precious stones which are naturally occurring minerals that by their very nature vary from stone to stone is terms of structure and colour.
In addition to this the designs have a very distinctive 'aged' or 'vintaged' patina. This is a very common effect used by Pilgrim giving pieces an 'antique' feel to the overall design. It is not considered a flaw BUT it isn't to everyone's tastes. Each one varies very subtly in terms of patina markations.