Princess Cut Black Onyx Ring Set in Sterling Silver
- Free domestic shipping
Not sure of your ring size? We're happy to provide you with a ring sizer, making it easy to measure your size from the comfort of home. Ring sizers typically arrive within 5–10 business days, though delivery may take a bit longer during the holiday season. Please place an order using this link to receive a ring sizer. Make sure to provide your full name and delivery address. 
- Our dominant hands are generally slightly larger — make sure you measure the right finger on the correct hand.
- Rings with wider bands will fit a bit tighter. If you plan to measure one of your partner's rings, try to measure one with a similar width as the ring you want to purchase.
- Make sure the finger is at normal body temperature — fingers can shrink or expand when hot or cold.
- Your fingers tend to change size throughout the day — the best time to measure your finger is the end of the day.
- If your knuckle is bigger, take 2 measurements and choose a size in between — ring needs to fit over knuckle but not be too loose or it will shift around.
- When you don’t know your partner’s ring size, selecting one of the standard ring sizes is your best choice. The average ring size for women is 6 to 9, and the average ring size for men is 9 to 13.
Ring Size Conversion Chart
| Inside Circumference (mm) |
US, Canada, Mexico Size | UK, Australia, Ireland, New Zealand, South Africa |
France | Germany, Russia, Ukraine, Asia | India, China, Japan, South America, Turkey, Israel |
Italy, Spain, Netherlands, Switzerland |
| 44.2 | 3.00 | F | 44.00 | 14.00 | 4.00 | 4.00 |
| 44.8 | 3.25 | F 1/2 | 44.63 | 14.25 | 4.63 | 4.63 |
| 45.5 | 3.50 | G | 45.25 | 14.50 | 5.25 | 5.25 |
| 46.1 | 3.75 | G 1/2 | 45.88 | 14.75 | 5.88 | 5.88 |
| 46.8 | 4.00 | H | 46.50 | 15.00 | 6.50 | 6.50 |
| 47.4 | 4.25 | H 1/2 | 47.13 | 15.25 | 7.13 | 7.13 |
| 48.0 | 4.50 | I | 47.75 | 15.50 | 7.75 | 7.75 |
| 48.7 | 4.75 | J | 48.38 | --- | 8.38 | 8.38 |
| 49.3 | 5.00 | J 1/2 | 49.00 | 15.75 | 9.00 | 9.00 |
| 50.0 | 5.25 | K | 49.63 | 16.00 | 9.63 | 9.63 |
| 50.6 | 5.50 | K 1/2 | 50.25 | 16.25 | 10.25 | 10.25 |
| 51.2 | 5.75 | L | 50.88 | --- | 10.88 | 10.88 |
| 51.9 | 6.00 | L 1/2 | 51.50 | 16.50 | 11.50 | 11.50 |
| 52.5 | 6.25 | M | 52.13 | 16.75 | 12.13 | 12.13 |
| 53.1 | 6.50 | M 1/2 | 52.75 | 17.00 | 12.75 | 12.75 |
| 53.8 | 6.75 | N | 53.38 | --- | 13.38 | 13.38 |
| 54.4 | 7.00 | N 1/2 | 54.00 | 17.25 | 14.00 | 14.00 |
| 55.1 | 7.25 | O | 54.63 | 17.50 | 14.63 | 14.63 |
| 55.7 | 7.50 | O 1/2 | 55.25 | 17.75 | 15.25 | 15.25 |
| 56.3 | 7.75 | P | 55.88 | --- | 15.88 | 15.88 |
| 57.0 | 8.00 | P 1/2 | 56.50 | 18.00 | 16.50 | 16.50 |
| 57.6 | 8.25 | Q | 57.13 | 18.25 | 17.13 | 17.13 |
| 58.3 | 8.50 | Q 1/2 | 57.75 | 18.50 | 17.75 | 17.75 |
| 58.9 | 8.75 | R | 58.38 | 18.75 | 18.38 | 18.38 |
| 59.5 | 9.00 | R 1/2 | 59.00 | 19.00 | 19.00 | 19.00 |
| 60.2 | 9.25 | S | 59.63 | 19.25 | 19.63 | 19.63 |
| 60.8 | 9.50 | S 1/2 | 60.25 | 19.50 | 20.25 | 20.25 |
| 61.4 | 9.75 | T | 60.88 | 19.75 | 20.88 | 20.88 |
| 62.1 | 10.00 | T 1/2 | 61.50 | 20.00 | 21.25 | 21.25 |
| 62.7 | 10.25 | U | 62.13 | 20.25 | 22.13 | 22.13 |
| 63.4 | 10.50 | U 1/2 | 62.75 | 20.50 | 22.75 | 22.75 |
| 64.0 | 10.75 | V | 63.38 | --- | 23.38 | 23.38 |
| 64.6 | 11.00 | V 1/2 | 64.00 | 20.75 | 24.00 | 24.00 |
| 65.3 | 11.25 | W | 64.63 | --- | 24.63 | 24.63 |
| 65.9 | 11.50 | W 1/2 | 65.25 | 21.00 | 25.25 | 25.25 |
| 66.6 | 11.75 | X | 65.88 | --- | 25.88 | 25.88 |
| 67.2 | 12.00 | X 1/2 | 66.50 | 21.25 | 26.50 | 26.50 |
| 68.1 | 12.25 | Y | 67.13 | 21.50 | 27.13 | 27.13 |
| 68.5 | 12.50 | Z | 67.75 | 21.75 | 27.75 | 27.75 |
| 69.1 | 12.75 | Z 1/2 | 68.38 | --- | 28.38 | 28.38 |
| 69.7 | 13.00 | --- | 69.00 | 22.00 | 29.00 | 29.00 |
This vintage-inspired Black Onyx Ring Set is the perfect choice for anyone looking for a timeless yet unique design. Featuring a natural princess-cut black onyx center stone framed by sparkling simulated diamond accents, this ring captures both elegance and bold sophistication. Whether worn as an engagement ring, promise ring, birthstone ring, or a striking statement piece, it is designed to shine for every occasion.
► Metal: 925 solid sterling silver with rhodium finish for extra durability and shine
► Center Stone: Natural Black Onyx
► Stone Cut: Princess Cut (Square)
► Gem Size: 5.0 x 5.0 mm (approx. 1.4 ct.)
► Accent Stones: Simulated Diamonds (CZ)
► Style: Vintage-inspired, dainty, two-piece ring set
► Customization: Can be custom made in solid gold (white, yellow, or rose) or platinum – contact us for a custom quote
► Band Options: Sold as a two-piece set; matching men’s band available separately
This elegant black onyx princess cut ring set makes a meaningful gift for an anniversary, birthday, or special occasion, and is an ideal choice for those who want a non-traditional engagement ring with a bold and timeless look.
Our handling time is 1-4 business days for all non-customized silver, vermeil, tungsten items, or engraved pieces. For our made-to-order solid gold and platinum jewelry, the production time is 2-4 weeks, depending on the specific piece.
DELIVERY TIME
USA Approximate Shipping Time:
- Standard Shipping (USPS Ground Advantage): 3–12 business days
- UPS Ground: 3–7 business days
- UPS 3 Day Select: 3 business days
- UPS 2nd Day Air: 2 business days
- UPS Next Day Air Saver: 1 business day
Important Notes:
- The timeframes listed above are estimated transit times and begin once your order has shipped.
- Actual delivery times may vary due to carrier delays.
- We prioritize and ship upgraded orders as quickly as possible.
- Postage fees are non-refundable.
INTERNATIONAL SHIPPING & CUSTOMS INFORMATION
- Shipping times will vary depending on the shipping method selected at checkout.
- For some countries, you may have the option to prepay customs duties and taxes at checkout for a smoother delivery experience.
- In other cases, duties and taxes may be charged upon delivery if they were not prepaid. These fees are set by your country’s customs authorities and are beyond our control.
- Please note that customs fees are non-refundable once your order is marked as fulfilled.
CHARACTER LIMIT
The number of characters (including spaces) that can be engraved depends on the size and design of the piece. At Aquamarise, the standard character limit is:
- Women's rings: 16 characters
- Men's rings: 25 characters
FONT OPTIONS
We offer a selection of elegant font styles for engraving:
Option 1: Print - Bell MT (Recommended)
Option 2: Cursive - Brush MT
Option 3: Script - Vladimir Script
Please review our full engraving information here
