Gemaura LLC

07/14/2026

The article linked to this post is a technical, but fascinating read on the cause of irridescence in "Iris Quartz." Other names for this material include "Rainbow Quartz," "Aurora Quartz," and "Anandalite." For years, the effect has been attributed to some sort of coating on the facets of the crystals. This 2017 study proves that theory to be incorrect.

06/26/2026

For those of you with June birthdays, here's some excellent information on one of your birthstones! Alexandrite! 🤩

06/19/2026

Unfortunately, this is not surprising, at all. 😒

The Swiss Gemmological Institute (SSEF) has encountered emeralds that have undergone filler treatments after they have been examined in labs, it cautioned.

Read more: Link below

06/11/2026

A silver bar from the famous Atocha shipwreck was found today! It has been 27 years since the last one was found. 😮

05/08/2026

11,000 carats?! Wow! 😮

State-run media​ reported that the newly found rough ruby was discovered in mid-April, just after the traditional New Year festival.

03/21/2026

This beautiful gemstone is aleady sold to a private client, but we had to show her off one more time, in honor of all the March babies out there! 🎉

02/11/2026

We can hardly wait to show you the beautiful crystals, gems and jewelry that we brought from the Tucson Gem Show! 🌵💎😍 Be sure to follow us and check back often, to see upcoming announcements about our website restocks!

12/23/2025

Only "rock people" are going to understand this one. 😅

12/08/2025

A GORGEOUS diamond with a BEAUTIFUL name just sold at auction for $8.8 million! 🤩

Sotheby’s sold the world’s largest fancy-vivid-orangy-pink diamond last week in Abu Dhabi, where the stone raked in $8.8 million, beating its upper estimate.

👇Full article linked in a comment below.

12/04/2025

Let it snow! ❄️❄️❄️☃️

This gem may have the first documented case of aragonite snowflakes in opal!

A GIA scientist recently observed delicate, snowflake-like inclusions inside a 6.85- carat black opal cabochon. Raman analysis confirmed they are aragonite.

Other fun details? Its digit-style play-of-color pattern and surface features suggest it’s from Ethiopia and was treated to produce its dark body color. As a bonus, it also contains tiny metallic pyrite inclusions—better known as fool’s gold.

A gem full of surprises, inside and out.

Learn more about this interesting opal inclusion in a recent issue of G&G: https://bit.ly/3XUqLJr