Titanium was on the market for bands of ring only during a few years only now. Yes, some of the bands combine gold with titanium. Titanium is extremely light but completely durable and hard metal. Always, titanium will rayera thereafter a little. Gold like marquetry or additional band with the ring will carry much more quickly but can more easily be reconstituted than can titanium.
Initially, take care you to have the white gold and not to yellow. The two gold colors are employed like additions on the titanic rings. To check, you must clean any possible dull spot of gold to see what is really the color. The white gold can turn a yellowish color but generally not also the yellow as a yellow gold. Employ a bicarbonate of soda paste or a fabric of polishing of good jewels of the type to remove the dull spot and to rub the ring. If the white gold, the yellowish dull spot gets clear and shows the true color.
If not, probably gold is yellow to start. Yes, gold will differently look at against titanium that with metals of other colors. I cannot say that the white gold would look at the yellow since the rings I saw the yellow of glance or or white, according to the original color of gold. The white should seem whiter, in my opinion.
Always, the white can be tarnished with a yellow colour particularly so of the low carat such as 375. Generally, the gold applied to titanium in the east United States at least 14k, 585 and not the 9kt lower than you mention. I suppose that you are in a British part of our world. If led to the sale with RU, 9kt is a possibility but generally gold is of a higher carat on the titanic rings.
Refinshing the ring. Unfortunately, with the innate hardness of titanic even in jewels combines, polishing at the house will not reconstitute the ring. You will have to return visit to a jeweller and to ask that the ring be turned. It is possible using the aggressive compounds of polishing on a motorized machine of polishing. The compound must be aggressive to remove scratches of hard metal. The jeweller must pay attention completely to avoid too much polishing of gold since metal is much softer and could be polished in a mean state.
The jeweller will probably use a hard wheel of felt polishing which will allow the suitable cutting of titanium and is sharp bordered enough to order the contact of the wheel with the gold section. Aggressive polishing is followed with finer compounds and to perhaps finish with green make-up with cheeks has which will polish titanium and gold at the same time.
If gold white but is tarnished with a yellow colour, you can ask for the gold sector are plated with rhodium, a very hard white metal and durable employee often to preserve the white color in white gold. The jeweller can only plate gold and avoid titanium since you certainly do not want that it is plated with a white color!
This is done while masking or by covering the titanium of lacquer, nail varnish preferred red since it is easy to see the beginning and the end of the protective mask of the lacquer. Then, using a simple bath of galvanoplasty, rhodium is applied and will help to maintain the white gold white for more a long period. If after the first polishing to reconstitute the gloss, can decide to you not to have the made rhodium dish. It is also a fine choice.
I am sorry that there is not at the house remedy to repolish titanium. It is simply too difficult to polish metal without polishing motorized with the suitable wheel of polishing and the compounds of polishing. I hope that you appreciate the ring. To give to the east coast a problem and titanium can be stretched or perhaps compressed size of finger approximately of 1/2 at the most. The cut and to be added or cross to classify to the bottom is not possible to the jeweller.