Buying & Value
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Ethiopian Opal Price: How Value Is Judged, Authenticity, Rarity & Size
Ethiopian opal prices commonly start below $30 per carat for ordinary commercial stones and can rise toward $60 to $100…
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Emerald Price: Market Value, Condition, Quality & Rarity
Emerald prices range from a few hundred dollars per carat for many commercial natural stones to several thousand dollars per…
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Diaspore Price: Buyer Value Guide, Rarity, Demand & Treatments
Diaspore prices vary from a few tens of dollars per carat for many smaller unbranded color-change stones to several hundred…
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Diamond Price: Value Drivers, Grade, Supply & Demand
Diamond prices span an unusually wide range because carat weight alone does not determine value. In the current natural-diamond retail…
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Cubic Zirconia Price: What Buyers Pay For, Condition, Quality & Rarity
Cubic zirconia is inexpensive as a loose gemstone. Current retail inventories commonly place tiny calibrated stones below $1 each, many…
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Coral Price: Value Factors, Quality, Size & Origin
Coral prices vary dramatically because the market is not valuing one standardized gem. Current loose-coral retail inventories show untreated Italian…
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Citrine Price: How Value Is Judged, Market Demand, Grade & Origin
Citrine is one of the more affordable transparent gemstones, and ordinary loose faceted stones do not usually command high per-carat…
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Gemstone Treatments Explained: Heat, Diffusion, Oil and Filling
Gemstone treatment is not automatically a sign that a stone is fake. Many natural gems are heated, filled, oiled, irradiated,…
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How Gemstone Prices Are Determined: A Complete Value Guide
Gemstone prices are determined by more than carat weight or a familiar grade such as “AAA.” The final amount reflects…
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Lab Sapphire Price: Market Benchmarks, Quality, Size & Origin
Lab sapphire prices can range from only a few dollars for small commercial loose stones to tens of dollars for…
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