Thank you for contacting Mearto with your appraisal inquiry.

It is a beautiful and wellkept vintage doll. Such vintage toys are being offered at auction on a regular basis.
Your doll was produced by the JAKKS Pacific. Mass produced dolls rarely have value beyond their purchase price even when kept in excellent shape. Normally a company like Jakks Pacific produced dolls in lots of 1000 and upwards.
Unfortunately the market value for such dolls has declined in the past few years.

The estimate provided is for a well-advertised specialised online toys auction, where I believe the doll has the best chance of realising its fullest potential. However, there is no measurement for the sentimental value you might attach to the Millenium diamond doll in original box. Retail "asking prices" can be higher and vary.

Please let me know if you have any additional questions. I’m happy to help.
Thank you