This is a huge wonderful intense orange Imperial Topaz that looks even better in person. 1. It is one of the hardest naturally occurring minerals (Mohs hardness of 8) and is the hardest of any silicate (i.e., silicon-based) mineral2. Many modern English translations of the Bible, including the King James Version mention topaz3. Brazil is one of the largest producers of topaz.4. Imperial Topaz is more desirable than any other topaz. Imperial Topaz has different chemical compositions than ordinary Topaz. This is untreated, 100% natural gemstone.From the world famous Katalang Mine5. Orange topaz, also known as precious topaz, is the traditional November birthstone, the symbol of friendship, and the state gemstone of the US state of Utah6. Slightly heated to intensify colour - see rough stone picture. This was cut and polished on the 23rd March 2018.7. Flawless gemstone COLORED STONE INFORMATION: SPECIES: Imperial TopazTCW WEIGHT: 10.50ctMEASUREMENTS: 15mm x 9mm x 8mmCOLOUR: Intense OrangeCLARITY: FlawlessSHAPE/CUT: Cushion. Correct proportions (table, crown, pavilion)POLISH: Excellent polish and reflectionORIGIN: Katalang Mine, Pakistan A rare set of stones like this is destined to become a sound investment as prices of very fine Orange Topaz is going up and up, these are very popular in France and other parts of Europe. Postage I can ship worldwide. This item is based on the UK so if you are within the EU will you usually receive within 5 days. Outside the EU 5-10 days. If you are from the UK you will receive NEXT WORKING DAY - guaranteed.