Risha Wa Khaima Diamonds and Jewelry LLC

16/08/2026

16/08/2026

Less famous among color-change gems than alexandrite but often more affordable, these stones typically shift from blue or bluish-grey in daylight to purple, violet, or reddish tones under incandescent light. Fine examples come from Sri Lanka, Tanzania and Myanmar (Burma), with Sri Lankan stones often prized for their clarity and distinct color shift. For those celebrating an August birthday, this stunning birthstone is a real bonus

05/05/2026

A 6.03-carat blue-diamond ring is likely to fetch as much as CHF 9.5 million ($12.2 million) at an upcoming Sotheby’s sale in Geneva.

The ring centers a cushion-shaped, fancy-vivid-blue, internally flawless, type IIb stone. It will be among the top pieces at the May 12 High Jewelry auction, according to the auction house’s website.

Full article: Linked below

18/04/2026

18/04/2026

AGTA is partnering with for the inaugural Stuller Color of the Year Award at the 2026 AGTA Spectrum & Cutting Edge Awards. ✨

One award will be presented in each division of the competition for the outstanding use of Stuller’s Color of the Year—Signature Red. ❤️

💎 Cutting Edge – all non-wearable entries
💍 Spectrum – all wearable entries

How to enter? Simply check the Stuller Color of the Year box on the entry form. ✔️

Submissions open this summer. Be the first to know when they open by signing up for our newsletter—link in bio! 🔗

18/04/2026

Sotheby’s will showcase a 4.37-carat alexandrite ring at its upcoming Hong Kong jewelry sale, expecting the piece to fetch up to HKD 1.5 million ($191,460).

The ring features a color-changing oval Brazilian alexandrite that shifts between greenish-blue during daylight and purple under incandescent light. It will lead the auction house’s Fine Jewelry sale, which runs from April 15 to 29.

Read more about the upcoming auction: Linked below