Heart glass bottle is ~22x27mm with ID opening of ~4 mm; holds ~0.5ml

Perfect keepsake gift, filled or unfilled, for that special someone even if that is you
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Sturdy, but delicate, handmade Italian glass bottle for holding any keepsake you want complete with a cork stopper. This is hung on a ~3mm round silky handmade cord that is adjustable ~12-30" (just slide the horizontal part at the top of the cord up & down) & includes a few faceted crystal rondelles & smaller bicones.  You could carefully take the cord off if your prefer to hang this on a metal or sterling silver chain as well.
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There is a capsule-like top attached insert that holds whatever you choose to put in your keepsake.  Ideas folks put in are urn memorial ashes (human or pet), hair locks, beach sand from a special vacation, crystals, perfume, essential oil, herbs etc. This bottle does not stand on its own thus making it perfect as a pendant that can also be hung on chain, ribbon, rope, etc.  

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Carefully put chosen keepsake into the top of the bottle & SECURELY push down the cork.  You can roll up a piece of paper to help with inserting your keepsake into the bottle unless you already have a mini funnel to use.  If you are worried that the cork may come loose for that very important keepsake, you could always seal the cork to the bottle with the appropriate glue for the materials you are using. Because these are each handmade, all the sizes given above may vary every so slightly.  This handmade glass bottle is nickel & lead-free.  Photos are enlarged to show detail.