Are unheated sapphires worth more than heated sapphires? In a lot of cases, unheated sapphires are more valuable, however it is a common misconception that heat treatment decreases the value of a sapphire or that somehow a heated sapphire is always less valuable than an unheated sapphire. In fact, heat treatment is always done to…
Most people have some idea of how to buy a diamond, as decades of education from the Gemological Institute of America and others have made the “Four C’s” a well-known set of criteria by which diamonds are judged. However, when it comes to sapphires, the rules change. You may be surprised that, unlike diamonds, there…
Sapphires are found in several regions across the globe, from the United States to Africa and Asia, and each region lends its sapphires unique characteristics. Sapphires are generally understood to form deep underground, either near the mantle-crust boundary (“magmatic” or “basaltic” sapphires) or deep within the crust as part of the movement of the tectonic…
When most people think of sapphires, they picture shades of blue—but there’s so much more to discover. Sapphires come in a wide variety of colors, including greens, blues, oranges, yellows, and even pink, but particolored sapphires are among the rarest and most visually striking, featuring two or more colors in a single gem. The Science…
Color can be quite subjective, especially in colored gemstones. Below is our guide to how we classify sapphire colors on our website. We use color-calibrated cameras to photograph each gem to showcase their truest color. However, sapphires can appear slightly different under varying lighting conditions. Because of this, we recommend submitting a video request once…
In the world of colored gemstones, beauty should never be sacrificed for size or weight—but unfortunately, that’s still the norm. Most colored gems today are cut with one of two goals in mind: maximizing weight or face-up size or some combination of those two. Ideal optical performance is typically not considered at all. To the…
We love seeing people excited to share about their new engagement and show off their ring…only to see a blurry photo where you can’t see any detail at all. Today, we’ll walk you through how to take the best possible photo of your ring that’ll have your family group chat and Instagram followers swooning using…
Choosing the perfect ring isn’t just about picking a stunning center stone. Understanding the various parts of a ring can help you make more informed decisions and communicate your design preferences clearly. Every component plays a role in both the beauty and durability of your ring. When talking about the anatomy of a ring, we…
If your partner is not involved in the ring shopping process, there are a few discreet ways to determine their size: We recommend trying to get the size as close as possible when ordering a ring. Depending on the ring’s design, resizing to add or remove more than two sizes can be difficult or even…
To keep your jewelry as beautiful as the day you receive it, it is important to keep up with daily care and maintenance. Below we have outlined our recommendations and tips for keeping your pieces sparkling! In addition, you always want to remove your jewelry when doing activities involving water, including washing hands, doing dishes,…
Commitment to Responsible Materials To ensure unparalleled quality, we partner with trusted casting houses that utilize expert techniques along with cutting-edge equipment while prioritizing sourcing from responsible, reputable, eco-friendly suppliers. These partners are dedicated to using recycled metals when possible and proudly manufacture in the USA. Our primary casting partner uses 100% recycled platinum and…
Choosing the right prong style is a subtle yet impactful way to make your engagement ring truly yours. Beyond securing your gemstone, prongs contribute to the overall aesthetic of your ring. Our in-house jewelers carefully shape every prong by hand, striking the perfect balance between dainty and durable— ensuring your ring will last for years to…
When selecting a gemstone for your engagement ring, understanding the difference between carat weight and millimeter size can be helpful. A number of factors can influence the relative ratio of carat weight to face-up size of a gem. Even the shape and cutting style of a gem can affect how large it looks compared to…
What do we mean when we say our Montana sapphires are ethically and sustainably mined? In a world where ‘sustainability’ can sometimes feel like a buzzword, we believe in full transparency. Mining, by nature, may not seem eco-friendly, but we want to show you exactly why we stand by our claims—and how our direct, responsible…
At Earth’s Treasury, we make finding your color easy with one of the widest selections of ethically sourced gemstones available, from Montana sapphires and garnets to tourmaline and emeralds. Our team of talented designers and jewelers is dedicated to creating custom gemstone jewelry that’s as unique as your story. Whether you’re drawn to classic pieces or dream up a one-of-a-kind engagement ring, we’ll guide you every step of the way to ensure your jewelry feels personal, original, and entirely you.
