News & Insights
Guides on moissanite, lab grown diamonds, 925 sterling silver, OEM / ODM manufacturing and the global jewellery market — written by the Holycome factory team.
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Gemstone & Material Guide
Moissanite
Lab Grown Diamonds
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The 4Cs of Lab Grown Diamonds: A Practical Guide for Jewelry Brands
Color and clarity are commodity features in lab-grown supply, while cut and real spread decide what customers see. A practical rew...Read more -
Are Lab Grown Diamonds Sustainable? What Buyers Should Know
Lab-grown diamonds avoid mining, but they are not automatically low-carbon. Here is what drives a grown carat's footprint, which c...Read more -
IGI vs GIA vs GRA: Which Diamond Certificate Do Your Customers Trust?
GIA, IGI and GRA are not three versions of the same document. Learn what each lab grades, which certificate belongs with moissanit...Read more -
Moissanite vs Diamond: A Cost and Performance Comparison for Wholesale Buyers
A factory-floor comparison of moissanite and diamond for wholesale buyers: hardness, fire, toughness, testing and certificate type...Read more -
Moissanite Color Grades Explained: D Color, VVS1 and What They Mean for Retailers
Moissanite color is graded on the diamond D-Z scale, but the similarity ends there. See what D, G-H and faint color look like in r...Read more -
Does Moissanite Get Cloudy or Lose Its Sparkle Over Time?
Moissanite does not cloud, yellow or fade with age - silicon carbide is chemically stable and rated 9.25 on the Mohs scale. Here i...Read more -
How Jewelry Brands Use TikTok and Instagram to Sell: A Manufacturer's View
A manufacturer's view of how jewelry brands sell on TikTok and Instagram: the video formats that work, and the restock discipline ...Read more -
Why Lab Grown Diamonds Are Taking Market Share from Mined Diamonds
Lab grown diamonds are gaining share through cost structure and supply breadth. What that means for wholesale buyers, certificatio...Read more -
2026 Jewelry Trends: What Wholesale Buyers Should Stock
A buyer-focused guide to 2026 jewelry trends: which directions to commit to, how deep to stock each one, and how to test a trend b...Read more