رؤى
مقالات بلغة واضحة من سومستون عن مصادر الأحجار الكريمة الفاخرة وما يحرّك أسعارها وكيفية الشراء بثقة.
Origins · East Africa · Market
From Tanzanian tanzanite to Mozambican ruby and Kenyan tsavorite, the Mozambique Belt has reshaped where fine colour comes from — and how it is traded.
27 سبتمبر 2026 · 2 دقائق قراءة
Buying guide · Certification
A laboratory report is only useful if you know what to look for. Here is how to read species, origin, treatment and the small print.
Origins · Tanzanite · Market
One deposit, a few square kilometres, and a supply that will not be replaced. Tanzanite is the clearest case of scarcity shaping a gemstone market.
Origins · Ruby · Market
In little over a decade Montepuez has become the world's most important ruby source. Here is what changed, and what buyers should know.
Market · Trends
Provenance, untreated material and responsible sourcing now move prices as much as colour does. A plain-language look at the trends shaping demand.
Process · Cutting
Cutting decides how much of a rough crystal survives and how the finished stone handles light. A look inside the stage that adds the most value.
