Dec 10, 2020 · In order to make money in gemstones, you first need to know gemology, so that you can be sure that the stones you buy really are natural, perhaps untreated, etc. You don’t …

Oct 15, 2021 · Continuing the discussion from Gemstone appraisals on rough raw gems and slabs: This is Robert. To complete my question how do I go about getting appraisals on some …

Jan 10, 2025 · THIS IS REPOST Hello to the IGS Community, Today, I’ll walk you through how we process and cut Oregon Sunstones that were sent to us by a customer from Washington, …

Jan 6, 2022 · They’re commonly used as simulants in jewelry for other more expensive stones. Our spinel gem listing has more info on identifying synthetic spinels. A Presidium gem tester …

Jun 12, 2021 · Does anyone have any experience using UV light to help determine what a gemstone is and whether it is synthetic or not in conjunction with the RI of the stone? The …

Apr 9, 2024 · Presidium Gem Test is the best for identification of natural diamond from other simulant ( cubic zirconia maily and other gems.) Is also best tester for identification moissanite …

Oct 19, 2024 · Most on market today floating about are Labratory grown gem stones mostly of Moissanite colors. Do not get discouraged. What are types of machines available? Diamond …

May 27, 2024 · Hello, I saw described a designation being made between diamonds [ essentially making them a distinct unique class of mineral in language / vs all other gemstones.] When …

Jun 16, 2025 · Prestige Stones | Gemstone Marketplace | Natural Ruby's Step into a world of elegance at our premier online gemstone marketplace, where connoisseurs discover the finest …

Jul 25, 2024 · Hello. I have collected more than 300 loose gems abiut 10 years ago. Most are precious gems like different kinds of diamonds, emeralds, sapphires, rubies but also semi …