@xavier_exelle: Three stones to close the series (Part 4 of 4). Two yes. One pass. Mahenge spinel: yes. Extremely praised in high jewelry right now and still at a price that hasn't fully caught up to the demand behind it. The comparison to pink sapphire and ruby is the right frame: in top color, Mahenge spinel offers something genuinely competitive with both, at a price point that still represents an entry opportunity. That window will not stay open indefinitely. The appreciation case is strong and the quality of the best material from Mahenge is undeniable. Alexandrite: pass. Not because the stone isn't extraordinary. It is. Extremely rare, genuinely so, with a color change that in the finest examples is one of the most visually compelling effects in the natural gemstone world. The problem is the same structural issue that came up with black opal: matching. Different origins produce different color change behavior. Stone to stone, the shift varies enough that building a suite or a pair is nearly impossible. The buyer pool for any specific alexandrite is narrow. Resale takes time. For an investment where liquidity matters, alexandrite sits in the too-complicated category despite the genuine rarity. Padparadscha sapphire: yes, with strict conditions. The stone has to be super clean. And the color balance has to be right, which is where the complexity lives. Padparadscha sits in a narrow window between pink and orange. Some buyers want more sunrise, others want more sunset. The subjectivity in what constitutes the ideal balance makes it a harder sell than ruby or sapphire in a standard color grade. It's not the easiest stone to move. But top quality padparadscha, clean and correctly balanced, has genuine collector demand and genuine rarity. In the right stone, it belongs in the portfolio.

Xavier Exelle

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Friday 03 July 2026 17:24:46 GMT