Lets create a custom designed piece for you!

Welcome to Maria K Jewellery

Maria K Jewellery has been founded in 2021 by Maria
Kostina, who is an Australian award-winning jewellery designer and a GIA
Graduate Gemologist. At Maria K Jewellery the selection of jewellery designs for you to discover a wide variety of engagement rings, cocktail rings, necklaces, classic tennis bracelets and earrings to name a few! All crafted in solid precious metals such as sterling silver, platinum and gold, incorporating coloured gemstones from sapphires to opals, diamonds and pearls, with extensive ability to outsource various coloured gemstones and or diamonds.

Custom designs are proudly made in our Sydney CBD workshop with Australian opals and Australian gold. Our team of master stone setters and jewellers who are all guided and undergo quality control under Maria's professional eye for detail. The team will work with you to create a truly breathtaking jewellery piece! Which you will cherish and love for years to come.

Our jewellery collections span a variety of choices and selections, with jewellery designs offered "ready to wear", well as custom designed works created to your requests. Most of our designs are one of a kind!

Get to know Maria

The founder and the creator behind each jewellery piece offered!

Maria is a graduate gemologist, having complete her studies at GIA, Carlsbad in 2017. Maria is also a qualified jewellery designer with Diploma and a Certificate from GIA. Her passion for jewellery design has led her to move temporarily from Sydney to South California USA where she undertook her studies and changed careers. Her immaculate attention to detail is what makes her jewellery stand out and different.

Maria K Jewellery has been founded in 2021 by Maria Kostina, who is an Australian award-winning jewellery designer and a GIA Graduate Gemologist. Maria is a trusted jewellery designer with unique set of skills, which gives her the ability to offer unparalleled expertise in creating “one-of-a-kind” and bespoke jewellery pieces. Just to name a few, such as the treasured engagement rings, wedding bands with any types of diamonds and gemstones all responsibly sourced from trusted sources worldwide! Our team of master stone setters and jewellers who are all guided and quality control under Maria's professional eye for detail, will work with you to create a truly breathtaking jewellery piece! Which you will cherish and love for years to come!

Jewellery Concierge Service

Offering a unique jewellery concierge service around Sydney metro areas. Where Maria can come to you and meet in a setting of a convenience and time for you. Creating a custom designed piece of jewellery will be effortless and providing a discreet and private setting, to really surprise and create a special gift for your loved one, or to mark your own special occasion, celebrating you!

Contact us now to schedule your appointment

Call +61 481 357 691 or

Fill out the Contact form

Testimonials -From the people
Testimonials -From the people

You did so well with trying to duplicate a piece from only one angle and thanks for been patient with me lol it turned out wonderful I’m am extremely happy with thanks again so much !!!

L.M. May, 2023
Testimonials -From the people

Got a custom ring designed by Maria, was a smooth process to work with her and absolutely loved my piece! Always wear my cocktail ring to special occasions!

Evgenia L., 2021