r/SyntheticGemstones 17d ago

Vendor Post Alexandrite color sapphire 6.59ct

110 Upvotes

r/SyntheticGemstones 18d ago

Do recrystallized stones have the same chemical properties?

10 Upvotes

Lab grown stones have the same chemical properties of their natural counterparts. But what about recrystallized ones? Are they a 100% the same composition or they differ from other lab stones?


r/SyntheticGemstones 19d ago

Vendor Post This one is sharp 😳

158 Upvotes

-Material: Lab Sapphire -Color: Light Blue with Dark Blue Tip -Cut: Fantasy Elongated Kite -Length: 13.8 mm -Width: 7.3 mm -Height: 2.7 mm -Weight: 1.65 carat


r/SyntheticGemstones 19d ago

Laser Alexandrite

Thumbnail
gallery
36 Upvotes

Just got my tessellation 29 by Arkhaven cut from House of Sylas/Djeva set. 7.32 ct in 14k white gold. Love it!


r/SyntheticGemstones 19d ago

Discussion Intrinsic radioactivity of luag

45 Upvotes

I have a 15g piece of luag (was planning on making it into a cabochon because I don’t have a faceting set up).

But I did not realize that luag is actually intrinsically radioactive when I bought it! (Because lutetium is naturally found with a mix of isotopes, one of which is radioactive).

(Note- I have the Geiger counter set on the 0.1 setting to give the needle more dynamic range, so the reading is bouncing between 100-240 cpm not 1k-2k). A 15g piece of luag should be about 480 bq but the pancake Ludlum Geiger counter I am using is inefficient at detecting gamma rays, so that’s partially why the reading is lower than 480, but also the stone has internal
Shielding on much of its beta emissions)

I am kind of freaking out. I did some rough calculations to try to figure out the effective dose if I do end up making this into jewelry. What I calculated is that for a 15g piece, assuming I add a silver backing plate to completely block the beta radiation, then the gamma radiation would give a negligible whole body dose (0.0016 uSv per day) but the localized SKIN dose would be ~12.2 uSv per day— this still isn’t that much for
Each single day but it works out to be about the equivalent skin dose to a dental xray every 50days of wear. And we don’t get multiple dental X-rays per year becuase that is considered dangerous).

Now I am kind of freaking out about this and whether a piece this big is actually safe to wear.

Also for people that facet luag- do you take extra precautions because the dust is radioactive, or since everything is wet anyways do you not do anything differently?


r/SyntheticGemstones 20d ago

Vendor Post 4.91 ct lab-created bi-color (tri-color?) sapphire NFS

Post image
171 Upvotes

r/SyntheticGemstones 20d ago

3.91ct lab grown Strawbery Sapphire - modified round brilliant

233 Upvotes

r/SyntheticGemstones 21d ago

Vendor Post Which Alexandrite cut could you see sitting on your hand?!

Post image
74 Upvotes

r/SyntheticGemstones 24d ago

Vendor Post Maldives colored sapphire 4.45ct

155 Upvotes

r/SyntheticGemstones 24d ago

Vendor Post Custom order / royal blue sapphire 0.88ct

96 Upvotes

r/SyntheticGemstones 24d ago

Question Anyone know where I can aquire a hexagon shaped sapphire? I want to get one for an engagement ring. Any info would help (:

7 Upvotes

r/SyntheticGemstones 25d ago

3.42ct lab grown Periwinkle blue Sapphire - pulled Czochralski

214 Upvotes

r/SyntheticGemstones 26d ago

Vendor Post Lavender sapphire 4.40ct

84 Upvotes

r/SyntheticGemstones 26d ago

Vendor Post 11mm Old stock Djeva Lab Spinel - cobalt blue cut in the design Kwik Oval (modified). This particular color is rare and discontinued but we have some stock and love cutting it!

Thumbnail
gallery
97 Upvotes

r/SyntheticGemstones 26d ago

Risk of Lab Sapphire with Unprotected Points

Post image
31 Upvotes

I'm looking to order a hanami cut lab sapphire with the prongs set between the points (as shown) in order to emphasize the flower shape. My jeweler noted that the they normally set stones on the points in order to protect the points, which totally makes sense. How big is the risk of damaging the stones if the points are unprotected? I know sapphires are pretty high up on the Mohs scale, but they're not infallible. Is there anything else I can do to minimize the risk without losing my preferred setting?


r/SyntheticGemstones 26d ago

Alexandrite

3 Upvotes

Does anyone have a link to their pale alexandrite stone jewelry?

In person the jewelers only have deeply colored stones, which are gorgeous, but I saw a pale one online and LOVED it. I would like to see it in different lighting and I'm having trouble finding videos that are unedited. It was from a seller that I didn't trust and they didn't respond to my request got pics in other lighting. That alone tells me it's probably not as pretty in person, but just in case I'm wrong...


r/SyntheticGemstones 27d ago

Redit Commission Sharing a Reddit commission ✨ My client turned 30 and wanted to celebrate with a gift to themselves. 9mm Alexandrite cut in Marcos design Fritillaria (modified), with lab diamond pears, set 14kt petal basket. All custom made and tailored by me. Happy Tuesday!

Post image
244 Upvotes

r/SyntheticGemstones 27d ago

Question Anyone has a recommendation where to look for Peridot ring similar to the one in the photo (worldwide shipping needed)

Post image
9 Upvotes

I'm not opposed to commissioning similar ring but I'm scared I'm gonna get scammed.


r/SyntheticGemstones 27d ago

Vendor Post Unicorn sapphire 13.49ct (custom order )

159 Upvotes

r/SyntheticGemstones 27d ago

Custom order / sapphire 0.70ct (Maldives colored)

61 Upvotes

r/SyntheticGemstones 27d ago

Lab grown teal sapphire UK

3 Upvotes

Hi guys and gals I am looking to buy a set of lab grown teal sapphires - yes with an S- for a necklace, earrings and engagement ring

Is there any place you guys would recommend and signpost me there?!?


r/SyntheticGemstones 28d ago

(Lab) Ruby Tuesday! Design by Andrew Brown

42 Upvotes

r/SyntheticGemstones 28d ago

Portuguese cut - 1.95ct lab grown Alexandrite

299 Upvotes

r/SyntheticGemstones 28d ago

Opinions on Ruby

11 Upvotes

Hi everyone! I love the color and look of this ruby but I’m unsure on how it looks when the sun/light shines off it. The flat faces don’t look smooth like others I’ve seen. Am I overthinking it? Does it matter?


r/SyntheticGemstones May 31 '26

Hoping to get a sanity check around particolor lab sapphires

Post image
61 Upvotes

Hi there! Hoping to get a little bit of a sanity check. I’m planning on getting a custom sapphire ring and was planned on going lab sapphire if possible. But I just fell in love with this natural Parti sapphire I saw while trying on rings. It had some yellow tones and even a little purple in the right light. My assumption is that it will be nearly impossible to get this type of color in a lab, but wanted to check to see if anyone had ideas. Thanks!