Not that I know of, but some are:

* All types of pearls
* Uncut diamonds/emeralds/rubies/star-of-Tamzyrr-diamonds/sunstones
* Blue/pink/deep blue mermaid's-tear sapphires
* Black/blue sky opals
* White-point star diamonds
* Fossilized bessho lizard spurs
* Kezmonian honey beryls
* Selanthan bloodjewels
* Faceted blood red sandrubies
* Shadow amethysts
* Black-cored emerald orbs
* Phoen's eye topazes
* Cloudy alexandrite shards


I think pretty much any high end gem can too, but I don't play in the EN or Rift long enough to be sure. Things like dragonseye sapphires, sylvarraend rubies, etc.

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https://gswiki.play.net/Leafiara

The issue with cheap gems is getting them to not blow up, given the number of Purifications/1004 that it may take to orb them.

Compare/contrast with uncuts (diamonds & emeralds) that frequently go orb on the first cast. <shrug>

Star Rubies can be found as orbs. But I have yet to see one become an orb through purification. And I went through a bag of 50 not-orb ones earlier this year with someone. After the first dozen ... I was bound and determined SOMETHING had to orb, and I finished off the bag of them. They were worth more when I was done, but

... nothing ever became an orb.

So there's your star ruby report.

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Any gem over 1000 silvers in value has a chance become an orb gem, I think the lowest value orb gem I've found/made was a violet sapphire. I have a star sapphire currently imbedded with 101.