FAQ

1. IS IT POSSIBLE TO TRY ON WEDDING AND ENGAGEMENT RINGS?

Of course you can view and try on all the rings that we offer on our website at any of our BISAKU brick and mortar stores. You can find BISAKU Jewellery Stores in Prague, Brno, Ostrava and Bratislava

In the stores you can also see the wedding rings from several exclusive collections, which are intentionally presented in the offer on the website. Rings from these collections are presented exclusively during personal visits to BISAKU Jewellery Store locations.
 

2. WHO PRODUCES BISAKU RINGS?

All models of engagement and wedding rings, which we present here are original BISAKU jewellery, which we have been manufacturing in the Brno workshop for over 20 years. We know everything about our rings, we are behind their creation and we guarantee meticulous and professional customer service. Since 1993, we have been registered with the Assay Office of the Czech Republic as a manufacturer.  
 

3. WHAT IS THE DELIVERY TIME FOR ENGAGEMENT RINGS?

We have each of the BISAKU rings from our offer in stock in several stone sizes. These variations are shown for each of the models. Rings are usually delivered between 2-3 working days. If the ring you have selected is not in stock, the production time is 3-4 weeks.
Please feel free to contact us if you have any questions. 

4. HOW LONG DOES THE PRODUCTION OF WEDDING RINGS TAKE?

The standard production time of our wedding rings is about 5-6 weeks. This time, of course, depends on the current load of production and we are able to produce wedding rings within a shorter period upon request. If you're in a hurry to receive your wedding rings, do not hesitate to contact us and together we will try to find a solution.   
 

5. HOW DO I FIND OUT THE RIGHT RING SIZE?

Do you need help with choosing the right size ring for your girlfriend? Never mind, the ring can be ordered in a size which you think will be the right one (we would like to recommend the size 52-54). We will promptly contact you with information about what size of the selected ring we have in stock. If needed, we will adjust the size without a problem, and it's completely free. 
 

6. HOW TO DETERMINE THE CORRECT SIZE FOR THE WEDDING RINGS?

The most ideal way is to visit one of our BISAKU Jewellery Store locations, where we will advise and assist you with choosing the right size of the ring. Can’t visit us personally? It is no problem. The alternative is to measure the size using our special measuring ring, which is adjustable and the size number appears thanks to a small magnifying glass. We will send you the measuring ring upon request.   

In any case it must be expected that many factors have an influence on the size of the ring. Your hands may change due to fluid intake, heat, cold, time of day or pregnancy. As a result, it may happen that you ring will be narrower, or vice versa looser 

If you have any further questions regarding the choice of the correct size of the ring, please contact us with these questions.
 

7. IS IT POSSIBLE TO RETROSPECTIVELY SHRINK OR ENLARGE WEDDING AND ENGAGEMENT RINGS?

Resizing of engagement rings is of course possible at any time and we provide it to our customers free of charge.  Regarding wedding rings, their size can also be additionally adjusted. However, there are a few exceptions, including for example rings with stones mounted around the circumference, with a larger number of stones, a distinctive pattern around the circumference of the ring, and the like. However we will also offer you individual solutions in these cases as well. For wedding rings, we reserve the right to add a charge for additional adjustment. 

If you have any questions, do not hesitate to contact us
 

8. WHAT MATERIALS DO YOU PRODUCE ENGAGEMENT AND WEDDING RINGS FROM?

You can choose from three types of gold for our wedding rings. You can choose white, yellow or red gold, or you can combine colors. Most often, we make wedding rings from an alloy of 14 carat gold (AU / 585), according to your wishes but we can also manufacture a ring from another precious metal. In this case we offer 18 carat gold (AU / 750), platinum (Pt / 950), palladium (PD / 585), or silver (AG / 950), from which it is possible to produce only rings for men. 

For more information not only about the materials, but also about the technology of the production of BISAKU rings, please visit the category "Materials and stones." 
 

9. CAN JUST A SINGLE WEDDING RING BE PRODUCED? Is it possible to combine wedding rings from different models or collections?

Yes, it is not a problem for us to make just one wedding ring. During the order, please choose "non-binding calculation," and then select above whether you want to make a ladies' or men's ring. Then the price will be automatically calculated and our ordering form will lead you through the other steps of the order. 

Have you selected a ladies' ring from a different collection than the men’? The combination of rings from different collections or model pairs is of course also possible. When ordering, follow the same procedure as in the above case of ordering a single ring. 

Please feel free to contact us if you have any further questions. 
 

10. IS IT POSSIBLE TO MODIFY THE SELECTED RING ACCORDING TO MY IMAGINATION?

If you need to adjust the width of the ring or gold color, material, or you want a ladies ring without stones, we will be glad to fullfil your individual needs. Almost every model of our wedding rings can be adjusted according to your wishes. The aforementioned details can be selected during the execution of the order within "non-binding calculation" for all models of BISAKU wedding rings.   

A note with further specifications on the required adjustments can also be attached to the order, for example, if it concerns a change in the type of coating, or the number of stones. Immediately upon receipt of your order, we will contact you and arrange the possible solutions. 
 

11. IS IT POSSIBLE TO MAKE AN ENGAGEMENT RING OR WEDDING RING ACCORDING TO ONE’S OWN IMAGINATION?

We love to produce rings for you according to your wishes, in fact individual designs are our specialty. You will find more information on this service in the section "Rings on request".  
 

12. WHAT KIND OF FINISH LASTS LONGER GLOSS OR TARNISH

Even rings cannot avoid the ravages of time, therefore it is common that shiny rings eventually become dull and the tarnished ones again shine after some period of wearing. For rings, where a combination of glossy and matte material is used the time difference is not so visible.  It is also true that traces of normal use will be less noticeable on shiny rings. 

In fact the patina is part of the ring, so do not worry about choosing any surface treatment. You can also continuously use the service of the complete restoration finishes, which we offer our customers absolutely free of charge once every 2 years. 

Read more about this service in the section "Jewellery service".
 

13. WHAT DOES THE LIFETIME SERVICE INCLUDE FREE?

Our unique after-sales service of wedding rings involves restoration of ring finishes, cleaning and polishing. We offer this service to you completely free, every 2 years from the purchase made. However, it is not recommended that rings undergo this operation every 2 years, since the polishing could lead to material loss. The patina obtained by wearing is an integral part of each ring. 
 

14. IS IT POSSIBLE TO SUPPLY ONE’S OWN GOLD FOR PRODUCTION?

If you bring us your gold fragments, We subject them to the necessary analysis during which we determine the purity and weight of the gold. Then, we can buy can this scrap gold from you and its price is deducted from the price of your chosen ring. In this way you can also pay the entire amount of the wedding rings, if you have enough scrap gold. Contact us and learn more about this option. 
 

15. IS IT POSSIBLE TO HAVE THE NAME AND WEDDING DATE ENGRAVED IN THE RINGS AT YOUR ESTABLISHMENT? What types of fonts do you offer? HOW MUCH DOES THIS SERVICE COST?

We engrave one of the 4 offered fonts to the inside of our wedding rings for free.

Because at BISAKU we are pleased to offer superior service, you can see how your engravings in these fonts will look on the sample rings. It is enough to enter the text of the engravings for ladies’ and men's rings in the section "Engravings on request". Then the required text appears in all 4 types of fonts for you, and also graphically in the sample rings. All that is left now is to choose.
 

16. WHAT IS THE DIFFERENCE BETWEEN ZIRCONIA AND DIAMONDS?

On account of their resemblance to diamonds, zirconia are often set in jewellery, although they are synthetically produced. Zirconia are soft, which over time leads to wear and tarnishing, though this can be slowed down but not prevented. However, during the production of BISAKU jewels we only use specially calibrated zirconia.

Diamond, or brilliant if you will, is the hardest known natural mineral, which is cut using the so-called brilliant cut and its "brilliance", will then last forever, with no threat of scratching.
 

17. WHAT IS THE DIFFERENCE BETWEEN DIAMONDS AND BRILLIANTS?

The answer to this question is indeed easy. Both cases concern the same mineral-diamond. This stone then becomes brilliant when grinded into the desired cut. Using the brilliant cut only changes the name of the diamond, it becomes a diamond that has been cut into an oval, round, or other shape. The brilliant cut is not the only method of cutting diamonds, but it is the most common. Jewellery with brilliants are passed down in families for generations and are good investments. Such a brilliant jewel then has lasting value. 
 

18. DO WE KNOW THE DIFFERENCE BETWEEN DIAMOND AND ZIRCONIA?

The iridescence in brilliants is simply unmissable. The difference between zirconia and diamond can even be seen by a layman in good natural light. A bigger difference can be observed after some time of wearing the jewellery. This is namely because dirtiness and wear and tear causes the graying of the zirconia. On the contrary, this does not happen with brilliants, whose gloss is not lost during wearing. 

The brilliants which we use, boast the best quality, because we work only with proven companies that are specialists in the field of precious stones on both foreign and Czech markets. 
 

19. WHAT QUALITY BRILLIANTS DO YOU USE?

All prices of brilliant jewelry on our website are calculated with brilliants with the quality SI and the color G. Have you chosen our ring, but you want to fit a brilliant stone of a higher quality in it? Then please contact us and surely we can agree on the production of your dream jewellery.
 

20. WHAT IS THE WARRANTY ON YOUR JEWELRY?

We normally provide a 2 year warranty on jewellery. Regarding BISAKU wedding rings, we provide you, as our customers, a lifetime warranty on the materials used and the workmanship of the rings, with effect from 1. 1. 2013. 
 

21. CAN A STONE FALL OUT OF THE RING? WHAT IS THE PROCEDURE WHEN THAT HAPPENS?

We only insert stones into the rings manually, and after many years of experience we can confirm that stone mostly fall out of rings under heavy impact or mechanical damage. If a stone falls out of your ring, bring the ring for complaint, we will assess the damage and will try to resolve the situation as soon as possible and to your satisfaction. If we do not find any signs of mechanical damage or interference by a third party on the ring, then we will place the stone in the jewellery for you for free. If you want to ask us anything about complaints, please contact us. 
 

22. WHITE GOLD AND RHODIUM - WHAT IS IT?

White gold is actually naturally silvery white, but it is slightly colored to yellow. What is it caused by? The actual white gold is formed from an alloy of pure gold, which is naturally yellow, and admixtures of other metals such as silver and palladium. Silver-white color, which is characteristic for white gold, is achieved by coating it with a layer of rhodium. This layer gradually wears down during wearing. Therefore a ring in white gold can get a yellow tinge.  

For the production of BISAKU jewellery we use white gold alloys containing silver, zinc and nickel, or silver and palladium. These alloys are known for the highest possible whiteness and hardness. All of the alloys we use are registered with the Assay Office of the Czech Republic. Our jewellery is carefully tried out and labelled with the state hallmark.  
 

23. DO YOUR RINGS FROM WHITE GOLD INCLUDE NICKEL?

Yes, for the production of white gold rings we use white-gold alloy AU / 585, which contains gold, silver, zinc and nickel. The content of nickel in the alloy is about 6%, while the alloy meets all Czech and European standards. It is also registered by the Assay Office, whose test all of our products go through.  
 

24.  HOW DO YOU TAKE CARE OF RINGS/JEWELRY SO THAT THEY LAST AS LONG AS POSSIBLE?

We can recommend a few principles so that your rings last as long as possible. You should take off your ring when washing your hands and using hand cream. They also should not come into contact with other chemicals and detergents. Traces of wear, or scratches to the rings can also be prevented by avoiding their wearing while playing sports, swimming, working in the garden, or normal household chores. 
 

25. WILL I GET A CERTIFICATE FOR A JEWEL WITH A DIAMOND ?

If you choose a ring fitted with diamonds, then you will receive a Certificate of the authenticity and quality of the natural stone with the ring. This certificate will include a 4C evaluation, it states the weight of the diamond in carats, as well as the quality, color and cut of the stone. Regarding larger stones, you may then also receive an international certificate from the reputable gemological laboratories GIA, EG, HRD and IGI. 
 

26. WHAT IS INCLUDED IN THE PACKAGE?

All of our rings are always packed in an exclusive handmade BISAKU box for you. Of course there are also all the documents, meaning the proof of purchase (receipt) Certificate of Authenticity (since 1.6.2015), and if your jewelry includes a diamond, also a certificate for the diamond.