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Blue Sapphire question

MatthewT

Rough_Rock
Joined
Feb 18, 2025
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The central stone on my Grandma's engagement ring that she has been wearing for 40 years fell out a couple of days ago. I'm guessing it was an oval ~ 6-7mm X 4-5 mm which I guess is around 1 carat. I live in london so I'm gonna try to find a stone in Hatton Garden. What sort of approximate price should I be looking to pay for about a 1carat cornflowerish vs or si oval sapphire?ring1.jpgring2.jpg
 
With these measurements you're looking at something closer to 1,5ct, I believe.

Price varies wildly on colour. Could be 1k, could be 2k+, and that's with the assumption of heating. Unheated would go even higher. Plus you're shopping at Hatton Garden which, if I understand correctly, isn't exactly known for bargain prices.
 
I found a very helpful vendor who came up with a few options for a replacement stone.

Stones 1 and 2 are from the same parcel but he thinks the ring is not deep enough for stone 1 to sit securely. Stones 2-4 are less deep than stone 1. Three is a medium dark stone and four is more of a royal blue.

I wondered if I could get some advice on which to pick. For reference I live in the UK (not too sunny). I'm not sure if with the shallower depth the lighter stones are too transparent or if the dark blue stone will look almost black in normal UK lighting? Sapphire 4 Royal Colour 0.73 .jpgSapphire 3  Medium Colour 0.64 .jpgSapphire 2 0.75.jpgSapphire 1 1.18.jpg
 
I found a very helpful vendor who came up with a few options for a replacement stone.

Stones 1 and 2 are from the same parcel but he thinks the ring is not deep enough for stone 1 to sit securely. Stones 2-4 are less deep than stone 1. Three is a medium dark stone and four is more of a royal blue.

I wondered if I could get some advice on which to pick. For reference I live in the UK (not too sunny). I'm not sure if with the shallower depth the lighter stones are too transparent or if the dark blue stone will look almost black in normal UK lighting? Sapphire 4 Royal Colour 0.73 .jpgSapphire 3  Medium Colour 0.64 .jpgSapphire 2 0.75.jpgSapphire 1 1.18.jpg

Relying solely on these photos, it's #2 for me without a question. #1 is dark (and the jeweler says too deep), and #'s 3 and 4 have quite a bit of color zoning. They also appear to be lacking saturation and are too light in tone (there is some windowing as well). But everyone has different preferences! Which are you leaning towards?

ETA: I should've also asked which stone your gram is gravitating towards!
 
Last edited:
P.S. Definitely ask for more photos and a video(s) if possible. I'd like to see #2 when the table isn't reflecting. It too seems to have some zoning going on, but not as badly as #'s 3 and 4. I vastly prefer it to the others so far.
 
sorry didn't realise it would invert the order when I attached the photos. The botom picture is 1 (a deeper stone in mm) followed by 2 (same batch) then the medium dark stone 3 and 4 being the darkest.
 
sorry didn't realise it would invert the order when I attached the photos. The botom picture is 1 (a deeper stone in mm) followed by 2 (same batch) then the medium dark stone 3 and 4 being the darkest.

Ahh gotcha! Ok, so then #4 is the darker one, #3 is the "medium-dark" (though it looks more medium to me), and #'s 2 and 1 are the lighter ones? Then #3 would be my choice at the moment. :)
 
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