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The Queensland boulder opal is distinct in nature, forming between thin cracks in ironstone. A layer of vibrant colours forms with a dark body, these stones are usually cut in freeform shapes, to preserve as much of the valuable opal as possible. Our head opal cutter and founder John Ryneš has over 45 years experience and understands how to bring each stone’s hidden beauty to light. He has cut with precision some of Australia’s most valuable opals. Our ties to mining communities - established over 45 years in the industry - give us access to a stunning variety of exquisite boulder opals.
Boulder opals are the second most highly valued opal, after black opals.
In countries like Australia and Germany, boulder opal is very valuable and often sells for more than 150,000 dollars per carat.
Boulder opal is a rare and valuable type of opal. It is formed by a process known as silica gel deposition. This process can produce opals of a very high quality. Boulder opal is found in large, round nodules embedded in ironstone, which is a type of shale. The boulder opal is usually a yellow-orange color but can also be white, gray, or black, depending on the iron content in the ironstone.
Opal can be spotted, often has many colors, is usually more luminescent than other gemstones, and has organic origins. It is found in all colors of the rainbow.
Boulder Opal is just one type of opal with a banded background. It can be white, black, brown, grey, gold, red, tan, green, pink, orange, blue, violet, lilac, or any color of the rainbow, or admixture of all colors. Boulder Opal is not as common as traditional Opal, but it is found in more places than any other type of Opal. Boulder Opal is often confused with other gemstones, like agate and jasper.
Boulder opal is a kind of opal that is rarely found in a sedimentary rock. Boulder opal is extremely rare and may only be mined from a single location in Australia. From this rock, no more than ten carats of opal can be obtained from each ton of mined rock.
Overall RatingIncredibly helpful and friendly staff. Worked with me to create the perfect ring for my partner and it's absolutely stunning.
I have done the research for you, so you can just go ahead and use ODF and not bother looking any further. Exceptional customer service, brilliantly talented and the kind of honesty in sales that is not regularly encountered. We could not be happier with our experience with Mike and will continue to use him in the future! Thank you, Mike!
We finally found the perfect one 💍 an opal engagement ring that we both love! Mike was great to work with and we would highly recommend him to anyone looking for an engagement ring or other jewellery. He was very professional and patient as we looked at a variety of styles and opals.
Wonderful customer service! LGBT friendly - the whole family made me feel very welcome and accepted. The engagement ring was literally perfect, and my Fiancée loves it! I designed the ring and Mike was amazing helping me through the various stages of the ring's creation. We will be back for the wedding rings :) Thank you ODF!
Could not be happier with the service and product. The staff were amazing, gave me a variety of options and talked me through all the steps up front. Our engagement ring turned out absolutely stunning - Thanks again to Mark and the team!
Extremely helpful service with designing a custom ring! Understood exactly what I was after and delivered within my budget and time frame. Would highly recommend!
My engagement ring that i designed for my partner was perfect, great communication from mike, and the way he listened and put in his own thoughts and recommendations as well made the ring just absolutely stunning and jaw dropping for me and my new fiancé, if you are looking for a custom made engagement ring, this is the place. You WONT regret it
From my very first experience at ODF as a child, going into the shop just to browse the beautiful gems with my Mum, they have been nothing short of amazing. I have since bought multiple pieces for my family, all custom designed by Mike. I have been over the moon with every single piece. Mike's eye for detail is spectacular and his craftsmanship is exquisite. My fiancé designed my engagement ring with Mike, going over every fine detail, I love my ring so much. I recommend ODF for all jewellery, whether it be a piece bought in store or a custom piece designed by yourself and mike, I assure you won't be disappointed.
If you are reading these reviews in the hopes of finding a dream piece of jewellery (especially an engagement ring) then your search is complete. Out of all the locations I went to searching for an engagement ring, this was head and shoulders above the rest. A daunting process was made not only easy but enjoyable by the lovely people at The Opal Diamond Factory. They are caring, helpful and above all know what they are talking about. The whole process was made easy by Mike; from the sizing to the style, the stone itself and overall design features, anything seemed possible. I cannot praise this man and his skill enough; the care he puts into understanding what you want the design to say and the jewellery itself is amazing. As for the jewellery itself, it is nothing short of breathtaking. His ability to frame the centerpiece stone while also making the band stand out is phenomenal. For me this involved engraving the engagement band to make it appear as though it was a branch supporting an opal. The detail he was able to achieve with this was amazing. Not only this, but the quality of the opal and the range of choices and styles available will mean that there will definitely be something that catches your eye as ‘the one’. If you are like I was and are searching the internet in the hopes of finding something special, then you have found the location you are looking for. Stop reading this and ring, email or go to the store, you will not be disappointed by the service, care or heart stopping potential that their jewellery has.
It’s rare that you come across a true professional like Mike. Choosing a jeweller was an easy decision for my husband, when the time came to design my engagement ring in November 2019. My husband worked closely with Mike to design my bespoke emerald cut engagement ring, and then 18 months later, I had the pleasure, when it came to our wedding bands. The showroom is warm and welcoming – just like the family that works there, and we instantly felt comfortable, which made it easy for us to discuss our ideas openly and honestly. Mike’s knowledge and experience coupled with his understanding of current trends, is how we were able to create elegant and truly timeless pieces. The process was such a memorable and positive experience and I would highly recommend Opal Diamond Factory to all. True professionals that are driven by passion and pride.
