Silver jewellery Collections with unigue natural gemstones, all made in Wales UK

Our Terms and Conditions


Each stone we use is unique and a one off, so every item with a set gemstone will be different to the next.

Sizes are approximate for the gemstones as they all vary in shape and size.



Every item of our jewellery is handmade to order, this can take 1 - 6 weeks. Please allow for this when you order.

We endevour to send your item as quickly as we can, and as soon as the order is sent we will email you with information and details.

If you need the jewellery for a specific date please contact us on the email below, or please put a note with your order


U.K. Delivery:  costs £8.00 for Special delivery, or £3.50 signed for Royal Mail.

Overseas Delivery: please email mareklois@hotmail.com for a quote.

Please note: all duty and import tax is the resposibility of the customer.



If for any reason you are not happy with your purchase from Markkostiak.com we will refund you for up to 14 days from receipt of the goods.

The item(s) must be returned within 14 days of you receiving it.

Our goods must be undamaged, unworn and in the original packaging.

You must also include the order details for this purchase.



Earrings are not included in our refund policy due to hygiene reason.

Any alterations, bespoke or made to order pieces from Markkostiak.com are not refundable.


MarkKostiak.com does not accept responsibilty for any postage costs incurred or any items stolen, lost,or damaged in transit.

We recommend that you return items using Royal Mail 'special deliverey' as this is insured and tracked.

Postage is not refunded. Your refund will be issued before 14 days to the payment method used in the original purchase.

If you receive a damaged or open package do not accept the delivery, contact us immediatly and we will arrange a replacement to be sent.



If you wish to cancel your order from markkostiak.com please return the confirmation email stating your intent to cancel. If the order has already been dispatched - please return it for a full refund.


We reserve the right to change, alter, and remove products without prior warning.


The above does not affect your statutory rights.










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Silver jewellery with unique, natural gems. Made in Britain.


© 2013 Mark Kostiak