Contact & Concierge
Personal guidance, considered details. Our concierge can help you choose a piece with confidence—from the first question to care after it arrives.
Speak with MERVAUX
For product advice, stone specifications, available grading reports, sizing or an existing order, email our team or use the form below.
Kathleen
kathleen@xdiamondinc.com
Jian
jian@xdiamondinc.com
Sunny
sunny@xdiamondinc.com
Telephone
+1 (408) 887-3134
Company & contact information
MERVAUX
Mailing address
335 Seale Ave
Palo Alto, CA 94301
United States
For order support, include your order number and the name of the piece so we can help you.
Choose with confidence
Ask us about a stone’s color and proportions, the setting, or the fit of a piece. Material and gemstone specifications are stated on individual product pages. Independent grading-report details are provided where applicable and refer to the stone identified in that report.
Delivery & order care
We currently ship within the United States. In-stock pieces dispatch within 5 calendar days; transit time is additional. Estimated delivery for pre-order and made-to-order pieces is 30–45 calendar days. Shipping options and charges are shown at checkout.
For a date-sensitive gift, delivery arrangements or questions about shipping insurance, please contact us before ordering so we can confirm the details for your piece.
Review our Shipping Policy and Refund Policy. Contact us before sending an item back.