Columbia Gem House launches calibrated Brazilian alexandrite melee online

Columbia Gem House has put a notoriously hard-to-find June birthstone material within reach of designers and custom clients: calibrated Brazilian alexandrite melee in 1-2mm sizes, sorted into dark, medium and light color grades and offered online under its Fair Trade Gems® sourcing process. For anyone building a ring, pendant or anniversary piece around alexandrite’s color change, the appeal is not just rarity. It is access to matched small stones with origin information attached, a combination that is unusually useful in the calibration-driven world of fine jewelry.

The pricing tells its own story. The company’s melee listings include 1 to 2mm AA and AAA Brazilian Alexandrite rounds, with prices starting at $18 per stone for light material and climbing to $90 for AAA dark stones. That spread reflects the realities of alexandrite itself: color saturation, size, cut and origin all matter, and in a gem this scarce, the smallest visible differences can drive the cost sharply higher. Darker grades usually read stronger in low light, while lighter stones can show more of the gem’s green-to-red shift when set in a way that lets light move through the crown.

Gemological Institute of America classifies alexandrite as the very rare color-change variety of chrysoberyl. First discovered in Russia’s Ural Mountains in the 1830s, it became famous for its chameleon-like identity, described as “emerald by day, ruby by night.” GIA places alexandrite among June’s birthstones, alongside pearl and moonstone, and also names it for the 55th wedding anniversary. The geographic source can significantly affect value, and GIA notes that alexandrite production is often erratic because it is commonly recovered as a byproduct of mining for other gems.

That scarcity is exactly why calibrated melee is so difficult to source. Columbia Gem House says fine alexandrite is extremely rare, and cutters try to preserve weight while maximizing the color-change effect, which leaves fewer stones suitable for uniform 1-2mm calibration. The company’s Brazilian Alexandrite page presents the material as traceable origin product, a detail that matters to designers who need repeatable measurements and to buyers who want a documented source for a stone with an unusually complicated supply chain.

The realistic audience here is narrow but serious: custom jewelers, retailers building June birthstone collections, and buyers willing to pay for provenance as much as for sparkle. The right questions are blunt ones. Ask how the stones were graded, whether the color is expected to hold across a matched set, whether the setting will protect tiny melee without burying the color, and whether the look you want is more important than the exact shade in the photo. Columbia Gem House warns that natural variation means it cannot accommodate matching requests or stone-by-stone selections from online images, which is a useful reminder that in alexandrite, even access comes with variability.