THALIA Signet Engagement Ring
THALIA takes the signet and hands the seal over to a stone. We sink a marquise into the dome east to west, flush in a rub-over bezel, so the table finishes level with the high-polished gold around it. The shoulders carry the weight the way a signet always has, and the surface stays smooth enough to wear straight through a day.
This diamond was created in a lab.
Ring details
Your white diamond
Every THALIA Signet Engagement Ring is made around one stone, chosen for your order. Upon receiving your order, we will hand pick a diamond for you that meets our high standards. Each stone carries an IGI or GIA certification report, and the report comes with your ring.
Weight: ~1.06 carats (exact weight will vary based on your piece)
Diamond Quality: DEF/VS+
Ring size
THALIA is made to order, so you can order your size. If you need to resize it up or down by a size after it is made, we will do our best to resize it to your preference. Add a note in your cart if you need a quarter size. We offer quarter sizes at no extra cost. How to measure.
Crafted just for you
Your ring is specifically made for you and will be crafted in 4-6 weeks by our master jewelers. Upon completion, we will ship it to you overnight, fully insured.
Work begins as soon as your order is placed, so contact us immediately if you need to.
The ARCA promise
Decades of experience
When you choose to work with ARCA, you benefit from the decades of experience and relationships our team has collectively built. ARCA has a deep commitment to its high quality standards that extend beyond jewelry and into the client experience. Our pieces are brought to life by skilled jewelers who ensure that every ARCA piece is fit for a modern heirloom. Whether you’re designing your engagement ring, celebrating a milestone, or simply gifting yourself, ARCA’s promise is to deliver only the best because it’s not just any jewelry, it’s your jewelry.
The ARCA diamond standard
At ARCA, every diamond and gemstone is hand selected by a diamond and gemstone expert. Two diamonds can carry the same grading on their reports and look nothing alike on a hand in daylight. Discerning that difference is where ARCA stands out. We only work with stones that meet our criteria and do not compromise on our high standards of excellence.
Customization
Engravings are complimentary. Add a note in your cart telling us what you would like.
If you want this ring in a stone we have not listed, or something we have never made, tell us about it.

Made to Order
Every piece begins when you place your order.
Your piece is made for you in four to six weeks by skilled jewelers, around a stone we hand select for your order.
When it is finished, we ship it to you overnight and fully insured.
The House



