Very old, huge and collectible Coral Necklace 512g.

Description

Today I have for sale extremely rare vintage and huge red coral necklace purchased at an estate sale in Europe. I haven't seen so huge and heavy coral necklace before.
The length is 15 inches it weighs 512 grams and it has a 42 barrel shape red coral beads.
Biggest bead is 29.73 x 24.62 mm
Smallest bead is 18.10 x 16.31 mm
As you can see on the pictures the beads have a lot of  natural imperfections and lighter spots of discoloration.
The necklace is very old and I do believe the cord may need to be replaced. Please review the photos carefully and if you have any questions please ask before bidding.
Test#1
Submerge in Milk
Real coral can be tested by submerging in cow’s milk. Once submerged, if the coral is real, the milk will turn slightly pink. If the coral is not real, the milk will remain unchanged and white in color.
Test number one: POSITIVE
Test#2
Lemon Juice and Calcium Carbonate
One way to test your coral item is to see how it reacts with acid. Pick a part of your coral jewelry that isn’t easily exposed (say the underside of a ring or inside of a bracelet) and swab it gently with lemon juice to see if tiny bubbles form on the coral’s surface. If small bubbles appear, it means that the acid from the lemon juice has reacted with the coral’s calcium carbonate, a substance that dissolves in acid. Remove the lemon juice quickly if it does begin to bubble so as not to damage the coral.
Test Number two: POSITIVE
International Buyers Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Thank you and Happy Bidding.