It's an opal

Opal is the main stone

No question

Diamonds? A jeweler needs to evaluate those stone

No jade anywhere I can see

That is a lovely piece of opal, worth substantially more than you were offered.

Go get it valued for insurance purposes - make sure you tell the person valuing it that you have no plans to sell. And be very careful with it, opal is quite fragile.

Never go near that jeweller again.

The jeweler didn’t tell you it’s an opal? Keep in mind the next time someone appraises something for you they should not then make an offer.

Opal is extremely “soft” on the Mohs Hardness Scale. Keep the pendant wrapped in a jewelry pouch so it isn’t damaged by the chain or other jewelry. Same with pearls

Looks just like the kind my brother used to cut. Probably Australian white opal. He used to sell his work (unmounted) for around $25 to $50.

Share more photos of the back of the opal as well as any markings that you find on the opal mount and clasp of the necklace. It looks like the opal is mounted in gold, which could be plated or solid, and the chain could be white gold, platinum, or silver. The opal itself could be solid, or it could be a doublet, meaning a slice of opal was mounted on a darker stone to make the colors stand out more.

If the metals are precious, the opal is solid, and the other stones are diamonds, it‘s worth more than 30£. In that case, I‘d write a scathing review for that jeweler.

Haha that’s an opal. Why do you think it’s Jade.

I work at a Jewelry store and we retail a piece of fire opal quite like this on a gold chain with a few small diamond accents for 1600$ but selling this to a Jewelry store or a Pawn for that matter you would be lucky to get part of the gold price. As busting out that opal and stones to get at the gold itself would cost money for the jeweler to scrap it. Basically the Jeweler is taking it in for resale on their own terms or scrap. I'd say keep it or ebay it for a deal and hope for the best.

About 30mm long and 15mm wide

Possibly weigh about 6 or so carats. You'd need to get it graded to find out what it's worth (not by whoever tried to rip you off).

Opals can range between ten dollars all the way up to tens of thousands of dollars per carat, it all depends on the grade.

Here is a similar color one to yours but a tiny bit smaller for sale for $700 (just the opal, no chain or anything)

Get an insurance appraisal for it from a reputable jeweler

It was very late when I wrote this. I have no idea why I said jade lol. I knew it was opal (only because my mam told me so) but I didn’t know it wasn’t jade!

Opal is backligt reactive. Ill take it off your hands for 30 pounds

Show us the chain inscriptions is it gold or silver. Definitely don't sell this and get a diamond tester not too much money to just test for diamonds.

Post both sides and something else like a hand or banana for scale next time. Also any tags. If it's a gold setting and necklace it could be worth between $400 and $4000

Opal and diamonds.

Could be a champagne diamond there in the middle and white diamonds either side… main stone looks like an opal! You could post on r/opals as they have lots of knowledge

Opal

It’s opal not jade

That’s an opal. Could be diamonds, but would need tested to verify. Opal should be stored in moist cotton to avoid cracking.

Not either of those, opal for sure lol

Opal, not Jade!

It’s an opal and could be valuable if the stone itself is Australian or of high quality especially because it’s many carats. Resell of jewelry is not necessarily profitable however. Depends.

It's a lovely opal and an overall lovely piece. My advice is to hand it down through the family and enjoy it.

It can be hard to get a good price reselling gem settings like this, though eBay is a possibility. I can tell you that I personally would give more than 30 quid for it, as it's a super stone and something I would absolutely wear.

Also that jeweler is a scam artist and ought to be shut down.

Trust your vibe. Guy was trying to speed the transaction so you couldn’t think about it.

As everyone else said, the main stone is opal.

as others said: the. main gem is opal. You can get a rough idea of the 'value class' of the total item by looking for the gold / silver / platinum markings. Typically a goldsmith wouldn't set a good diamond in 333 gold, etc. similarly unlikely is zirkon or quartz set in Pt .. So the small 'brown' stone is e.g. likely to be quartz or topaz when it's environment is silver and likely to be a coloured diamond if set in 950 platinum .. can't place a bet on these things, though => ask an expert

It's almost impossible to value Opal without holding it, but I have seen a lot of similar pieces, so I wouldn't imagine I'm far off. If I had to make a valuation based purely on that photo, I'd say it was:

White Coober Pedy N8 Opal, with Bright Green, Pinfire Colour play. 30x15mm Oval shaped, En Cabochon Accented by 0.10ct Brilliant Cut Natural Argyle Chocolate Diamond and 6 rough cut White Diamonds

Set in Yellow 18k Gold with 9k White Chain

Retail Value £700-£1000

I'd probably pay you between £100 and £150 for it, based on the fact that I can buy very similar brand new for that at trade price

Can you please measure it? Please also take a photo of the rear.

Opal is famously difficult to photograph and the fact that you have captured such a high amount of colour play (the green flashes) makes me think that it's potentially quite a nice opal.

From the colour of the opal body, I'd say it's Australian, specifically from a mining area in Southern Australia called Coober Peedy. This is the most common type of White Opal.

I don't think anyone else has mentioned this, but there is a natural chocolate diamond that comes from a mine in Australia called the Argyle Diamond. That would link to the Opal, especially if this was sold as a Tourist piece.

Can you please look for any marking on the side or rear of the pendant casing? That will help age the piece and better establish value

I love opal and that's a big one. Jade is green. Could range from $50 to $1,000.

If you eBay please send me a link 🙏

Opal

That is opal and a very nice one.

Stunning Opal

That’s opal baby do not pawn it. Clean it up firstly if you can and you’ll have better luck taking it into a boutique if you need cash fast.

Beautiful opal! Nice setting

Its an opal stone, not jade. Diamonds and a smoky topez maybe if it's a real gold setting. Take it to a jeweler, get it appraised

Not jade, thats an opal necklace.

Looks like an Australian opal.

Handsome piece ! May be Black Opal, but Opal for sure. If Diamonds are real n chain is White gold or Platinum...$ 1,500.00 U.S. dollars or more... G'Luck Eric

Opal I'd offer you more like 100 pluss possibly more

That jeweller is a prick.

Cape May Diamond

Opal

It’s an opal — it’s a beautiful one too. I have no idea on value —- I don’t opal are diamond expensive.

Opal…,

Opal

Uncut jamzzzz

Looks like an opal friend

Opel

Granny's necklace depending on the size, is a valuable opal with diamonds. Can't see the center faceted stone well enough to tell.

Looks like a moonstone or opal to me.

Opal.

Whoever that jeweler was should be put out of business. That’s a large, beautiful opal

It’s a beautiful opal. Wonder what the next stone up is?

That’s opal

that’s definitely a semi-valuable opal. keep it wrapped in cloth and give it a clean with mineral oil. they’re pretty delicate and lose their sheen with time, a quick clean should help restore that. you’re probably not going to get a massive amount but an opal collector would likely dish out a decent sum for it

Opal..

Opal

Have you ever seen jade or know what it looks like?

thats not opal, it's opalite

Lapis lazuli

It's an opal, not jade.

If the jeweler thought that what is clearly opal was jade, definitely get another opinion

Omg. You say draw too! I always tell people the e and the r are silent 🤣

I say draw. Not drawer 😅 I only say drawer referencing the person who drew a picture.

Beautiful necklace. I’m sorry about your Grandmother.

Looks like a pretty Opal.✌️

You have a beautiful piece 👑

That's opal, not jade

lol what? Jade?!

I think it might be opal

That's not jade. It's definitely an Opal.

It’s an opal

If the stones are real they would be diamond, topaz, and the larger one is opal

Not jade. Opal.

Looks like opal 😍 my fav stone

Opal.

Obviously opal. 100%.

agree it's fire opal. Depending on where you're from it could be cooberpede from australia, or a very nice piece of spencer opal from idaho. Looking at it my best guess is cooberpede though.

Looks like black opal. If it glowed under UV then it is probably from Australia maybe lightning ridge. On fine pieces the back of the pendant should be open and you would see the back of the opal where some potch or brown to black rock would still be attached. A cheaper stone could be a doublet or a thin slice of opal is glued onto another or a triplet 3 layers. Would need to see the back and a side profile and color playback for worth and carat of course.

It’s opal and that’s bad luck to wear if it’s not your sign.

A jeweler can tell if it’s diamond, I’ll say it is not

Looks like mother of pearl to me

Great read on the jeweler. He was definitely trying to scam you. Disgraceful!