True Blue...

Posted on the 28th September 2011

At Holts, blue Sapphires are always a popular choice with our engagement ring customers. Apart from its beautiful colour and lustre, Sapphire is hard – a 9 on Moh’s scale compared to Diamond, which is 10, and therefore making a great choice for a ring you are going to wear everyday and want to last! At Holts we have just launched our new semi-bespoke range of rings which enables customers to choose their gemstone and ring mount separately. Once you’ve made your choice from our large collection of coloured gemstones , diamonds and ring mounts, we’ll put them together for you to create your perfect ring. Blue Sapphire belongs to the Corundum family of gemstones. Sapphires come in a variety of different colours (apart from red - which would be Ruby) and the blue colour comes from chemical impurities of iron and titanium. Here are a few pointers for you when choosing a blue Sapphire: Blue Sapphires come in all shades of blue, varying from a very pale light blue to a deep black blue. Colour is of course down to personal preference but the colours which command the highest prices are a deep blue, not too dark and not too light. The clarity of the Sapphire is also important; you do not want too many obvious inclusions that can be seen with the naked eye. On the other hand, a few little crystals and feathers within a sapphire will help you identify it as a natural gemstone rather than a synthetic. Blue Sapphires are commonly cut into ovals and cushions due to the shape of the rough crystal, as seen below. This means that the cutter produces the least waste. Sapphire treatments – heated or unheated? Most Sapphires are heated, so unheated certified blue Sapphires command a premium. Sapphires are heated to improve colour and/or clarity, producing a much more desirable gemstone and enabling more of the Sapphire rough to be cut into gemstones.