https://www.brisbaneopalmuseum.com.au/blog daily 0.75 2025-10-12 https://www.brisbaneopalmuseum.com.au/blog/colour-in-opal-how-one-stone-can-produce-so-many-colours monthly 0.5 2025-09-27 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/d0c5abd1-77f1-4ece-96a9-e1a701ff48ba/Australian-Black-Opals+%281%29.jpg Blog - Colour in Opal: one gem, infinite possibilities - Make it stand out Image Credit: Geology Science https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/43d70bb4-4873-42cd-b4f9-6f111c952a59/alexandria_port_waves.jpg Blog - Colour in Opal: one gem, infinite possibilities - Image Credit: Google Earth Image Credit: Google Earth https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/0fadb0e3-0a3f-4bc3-9457-b8ac44371256/Diffraction-of-Light---NIST.png Blog - Colour in Opal: one gem, infinite possibilities - Image Credit: Universidad de las Artes, Argentina https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/209a5cf5-7319-480a-89a7-aa6bcb349d95/SEM+opal+phoot.jpg Blog - Colour in Opal: one gem, infinite possibilities - Make it stand out SEM image of packed silica spheres in an Australian fire opal showing red interference colours. Sphere size is approximately 250 nanometres. Image Credit: Hans-Ude Nissen. Cover of Reviews in Mineralogy vol. 29 "Silica" https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/cdba0df9-75fc-4f0d-98ce-81a5e4a7ef47/opal+under+EMS.jpg Blog - Colour in Opal: one gem, infinite possibilities - Make it stand out Wide view of an opal under an SEM. Image Credit: Samira Gulzar. https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/ce512b7c-ade5-4268-83af-b6d9a0ada2cd/double+slit+diffrraction+pattenr.png Blog - Colour in Opal: one gem, infinite possibilities Image Credit: Dietrich Zawischa https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/147cff39-e02d-4215-a634-bef61584002b/Screenshot+2024-03-20+132354.png Blog - Colour in Opal: one gem, infinite possibilities - How the colour of precious opal is produced by light diffraction through an orderly packing of silica spheres, with smaller spheres producing blue light through to larger spheres producing red light. Image Credit: https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/2d14ffe5-0720-4dac-bc6e-e45ca7352c6b/harlequin+opal.jpg Blog - Colour in Opal: one gem, infinite possibilities - Make it stand out Image Credit: GeologyIn https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/74b38a19-5903-4604-b027-a6735bdda25b/Screenshot+2024-04-18+142028.png Blog - Colour in Opal: one gem, infinite possibilities - Differences between precious opal and potch opal. A shows orderly packing of silica spheres at the top, making-up the precious opal at the bottom. B shows disordered packing of silica spheres at the top, making-up the potch opal at the bottom. Image Credit: Dr. S. Pecover. https://www.brisbaneopalmuseum.com.au/blog/visiting-minerama-for-the-first-time monthly 0.5 2024-05-01 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/c06a4711-d3df-472c-9ce8-88875782cf91/Screenshot+2024-04-27+at+3.22.13%E2%80%AFpm.png Blog - Visiting Minerama for the first time - Make it stand out Glen Innes 1:100 000 topographic map - Courtesy map of Geoscience Australia https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/2943386e-875d-4c2e-abb5-deae07a54b94/tempImageYyygjo.jpg Blog - Visiting Minerama for the first time - Make it stand out Gold panning somewhere in a river bed - Glen Innes, NSW Photo credit : Valentine McDonald https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/958a2315-963f-4605-9a78-36c739adc690/Screenshot+2024-04-13+at+5.34.03%E2%80%AFpm.png Blog - Visiting Minerama for the first time - Make it stand out Diagram credit : PTt deformation framework of an accretionary prism, southern New England Orogen, eastern Australia: Implications for blueschist exhumation and metamorphic switching, Phillips et al. 2008 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/4d7e2e73-cea3-4590-a9ff-8402c6476c8c/tempImagej4s6y3.jpg Blog - Visiting Minerama for the first time - Make it stand out Fossicking spot, Yarrow river - Glen Innes, NSW Photo credit : Valentine McDonald https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/af9e58e0-9175-4bd8-8977-f1e6247b12fd/tempImageJcfoBP.jpg Blog - Visiting Minerama for the first time - Make it stand out Sample of Glen Innes small sapphires Photo credit : Valentine McDonald https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/cfe9527f-e0c5-4545-9188-2802a2636178/tempImageGoe1yH.jpg Blog - Visiting Minerama for the first time - Make it stand out Sample of gemstones found in the Glen Innes region, photo taken at the Glen Innes visitor Information centre Photo credit : Valentine McDonald https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/bfff1c47-b28d-4971-bae3-7a4f27cf51cd/tempImage4nxERU.jpg Blog - Visiting Minerama for the first time - Make it stand out Panoramic view from the Glen Innes Highlands Skywalk Photo credit : Valentine McDonald https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/99892792-9b13-4072-a37c-94a7a9b73cbe/Screenshot+2024-04-11+at+3.58.45%E2%80%AFpm.png Blog - Visiting Minerama for the first time - Make it stand out Australian standing stones - Glen Innes Photo credit : Time out website https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/4386fe1d-05d3-4314-b95d-50ca6bea7a33/tempImagertFkYw.jpg Blog - Visiting Minerama for the first time - Make it stand out Mural at The local Glen Innes Photo credit : Valentine McDonald https://www.brisbaneopalmuseum.com.au/blog/a-christmas-story monthly 0.5 2024-01-29 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/7cdabe68-d370-4a7e-8b8b-e139aa5cc7a2/1671431292.jpg Blog - A Christmas Story - Make it stand out Synthetic opals and crystals Christmas tree brooch - Picture courtesy of Etsy website https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/46fd5cd7-e291-4759-8b15-5214cdfb1561/Screenshot+2024-01-18+at+7.07.40%E2%80%AFpm.png Blog - A Christmas Story - Make it stand out Opal mourning brooch - Picture courtesy of Freeman Hindman auctions website https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/2d18f2cf-c314-44a3-9952-3ee3cc512fae/Screenshot+2024-01-18+at+6.45.13%E2%80%AFpm.png Blog - A Christmas Story - Make it stand out Antique opal pin/pendant 14k yellow gold - Picture courtesy of Eragem website https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/3ee528f1-d091-4b3e-b1a6-74c799680337/Screenshot+2024-01-18+at+7.37.05%E2%80%AFpm.png Blog - A Christmas Story - Make it stand out A Victorian 15ct gold opal brooch - Picture courtesy of Rosebery’s London website https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/0bdb258a-e720-43b4-89c2-5766b99dc3ae/Screenshot+2024-01-18+at+7.31.27%E2%80%AFpm.png Blog - A Christmas Story - Make it stand out Betsey Johnston Christmas tree brooch - Picture courtesy of mercary website https://www.brisbaneopalmuseum.com.au/blog/how-to-style-your-opal-jewellery-for-summer monthly 0.5 2024-01-17 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/1705476721503-J1E04X2BHR3P7QPJ6Q0M/274118476_4924847574262854_8382955502984792179_n.jpg Blog - How to Style Your Opal Jewellery for Summer - Make it stand out Model : Holly - Photographer : Valentine McDonald https://www.brisbaneopalmuseum.com.au/blog/a-pearl-in-the-rough-the-discovery-of-the-worlds-first-opalised-pearls monthly 0.5 2024-01-17 https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/07086b6e-8606-4ef4-8895-f91a714e4783/Screenshot+2024-01-17+at+4.06.00%E2%80%AFpm.png Blog - A pearl in the rough - Make it stand out The tiny pearls, found in an opal mining spoil heap - Picture courtesy of South Australian Museum https://images.squarespace-cdn.com/content/v1/64ee99d1fea58826eca3f6a3/7fd28dc2-b6a8-4293-b28d-344a999662c2/tomographypearl.jpg Blog - A pearl in the rough - Make it stand out Tomographic scan of the opalised pearls - Picture courtesy of Ansto Staff. https://www.brisbaneopalmuseum.com.au/blog/tag/Opal+pearl monthly 0.5 https://www.brisbaneopalmuseum.com.au/blog/tag/Pearl monthly 0.5 https://www.brisbaneopalmuseum.com.au/blog/tag/Australian+Opal monthly 0.5 https://www.brisbaneopalmuseum.com.au/blog/tag/Opal monthly 0.5 https://www.brisbaneopalmuseum.com.au/home-old daily 0.75 2024-01-15 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