Exceptional oval cut ruby set in an 18 karat white/yellow gold ring, with 10 brilliant cut diamonds.

Ruby: 1.13 cts
Origin: Mogok
Diamonds: 0.32 cts, 10 pcs

Call us for a price on this item on 0845 056 0055.
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Blue Sapphire & Diamond / White Gold Ring

Octagon cut blue sapphire & diamonds set in 18 karat white gold 5 stone ring.

Blue Sapphire: 0.87cts - 1pc
Origin: Madagascar
Diamonds: 0.29cts - 4pcs (baguette cut)
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Diamond / Yellow / White / Rose Gold Ring

£960.00

Diamonds set in an 18 karat white/rose/yellow gold half eternity rings (set of 3).

Diamonds: 0.45 cts 45 pcs (brilliant cut)
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Blue Sapphire (Untreated)

£2,180.80

Type: Blue Sapphire
Origin: Sri Lanka
Clarity: Rutile silk inclusions
Shape: Drop
Cut: Mixed step cut
Weight: 2.10 cts
Dimensions: 8x7.6 mm
Enhancement: None
Price/ct: £900 + Vat

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Gem Treatments

Firstly, it should be noted that the treatment of gemstones is an extremely complex science which has evolved over hundreds of years. Due to the specialized nature of gem treatments it would be impossible to explain the subject fully on this website. There are books written by experts which cover the subject in great detail. We do feel however, that people have the right to know what they are buying and so we have given a brief non-technical explanation of some of the more commonly encountered treatments.

It is safe to say that most gems which are sold today have been treated in one way or another with un-treated gems being the exception rather than the rule. Some of these treatments are considered acceptable whereas others, such as the glass filling of fractures, have caused controversy. Due to the rarity of un-treated gems, they can command a much higher price by comparison to their treated counterpart.

Many gems are heated to very high temperatures to enhance colour and/or clarity. This includes rubies, sapphires, tanzanite, aquamarine, topaz, zircon, amethyst, demantoids plus many others. Some other gems are routinely oiled to improve clarity like emeralds. Diamonds are sometimes heated under pressure to improve clarity or irradiated to produce colours. Without such treatments, with the exception of diamonds, we would only have a tiny fraction of the gems that are available today and at prices unaffordable to most people.

Some treatments are permanent and some are not. Permanent treatments such as the thermal enhancement of rubies & sapphires require no special care. However if the treatment is non-permanent such as oiling, then care should be taken. Oiled emeralds may require re-oiling from time to time to keep your gem looking it's best. It is not advisable to wear an emerald ring whilst gardening or washing the pots and pans! Surface diffused gems will also require special care as the diffused layer of colour may only be fractions of a millimetre thick and could be removed by scratching the stone or re-polishing.

Our Treatments Policy

It is our policy to fully disclose any treatment. As it is such common practice to heat-treat rubies and sapphires, we presume all of these stones have been thermally enhanced (heat-treated) unless there is evidence to the contrary. As emeralds are routinely oiled, we presume all emeralds have been treated this way unless there is evidence to the contrary.

If the stone has been treated in any other way we will disclose this separately.

If we have evidence the stone has not been treated in any way, we will disclose this separately.

If you would like to know more about gemstone treatments, please email info@topgem.co.uk.