This is a gorgeous Vintage sterling silver pendant with large, round Genuine Rainbow Moonstone stone and a small oval genuine purple amethyst stone. It is solid sterling silver and heavy!
It is full of detail and the stone is very chunky and full of Rainbow flash.
A perfectly round (like a full moon) 28 mm genuine stone. It is rare to find a Moonstone pendant that is round like this.
It is 1 7/8 inches long including the decorative bail. It has a wide opening to fit a thick chain or could also be worn on a beaded chain. The opening is 9 mm wide.
It weighs a whopping 30.3 grams!! It really is quite an impressive pendant and a wonderful statement piece.
The pendant is stamped 925 on the back for sterling. I have photographed this in the best light to show its rainbow flash. Depending on how the light catches it, the flash of colors will vary.
(chain not included)

Moonstone Gemstone meaning:
passionate love that will fly you to the moon
It is said if you give your lover a moonstone necklace when the moon is full you will always have passion with each other. Moonstone is a highly valued gemstone for these reasons:

Brings good fortune
Assists in foretelling the future
Enhances intuition
Promotes inspiration
Brings success in love as well as business matters
Offers protection on land and at sea

The moonstone is associated with the moon and was the stone of the goddess Diana. The most powerful time to use the moonstone is in a full moon.

It has been worn as an amulet to bring good emotions to the wearer, while protecting those of a sensitive nature. It can reunite lovers who have quarreled. Moonstone is also considered a good luck stone.

Moonstone is a very personal stone. It is a reflection of the person who owns it. It does not add or detract, only shows how it is. This is why the moonstone is said to perceive that which "is". Moonstone is an excellent stone to use in meditation to understand oneself. Placing it in the moonlight of a moon reaching its fullness, not a full or waning moon, can revitalize it. This is a particularly good gemstone for women. It is a good stone for young women or teenagers.

Healing properties of Moonstone
Moonstone is used by healers to stimulate the functioning of the pineal gland and balance internal hormone cycles with nature's rhythms. Moonstone is a stone of inner growth and strength. Though often considered to be a woman's stone, it can be beneficial to men in opening the emotional self.