Large Square Signet Ring Black Stones for Gentleman
☑ Made to Order Product
☑ Lifetime Warranty
☑ Complimentary Shipping
☑ 30-day Returns Accepted
| Inside Diameter | Inside Circumference | Sizes | |
| mm | mm | USA & Canada | British & Australian |
| 14.86 | 46.68 | 4 | H 1/2 |
| 15.01 | 47.25 | 4 1/4 | I |
| 15.27 | 47.97 | 4 1/2 | I 1/2 |
| 15.53 | 48.79 | 4 3/4 | J 1/4 |
| 15.70 | 49.32 | 5 | J 1/2 |
| 15.90 | 49.95 | 5 1/4 | K 1/4 |
| 16.1 | 50.58 | 5 1/2 | L |
| 16.30 | 51.21 | 5 3/4 | L 1/4 |
| 16.51 | 51.87 | 6 | M |
| 16.71 | 52.50 | 6 1/4 | M 1/2 |
| 16.92 | 53.16 | 6 1/2 | N |
| 17.13 | 53.82 | 6 3/4 | N 1/2 |
| 17.35 | 54.51 | 7 | O |
| 17.45 | 54.82 | 7 1/4 | O 1/2 |
| 17.75 | 55.76 | 7 1/2 | P |
| 17.97 | 56.45 | 7 3/4 | P 1/2 |
| 18.19 | 57.15 | 8 | Q |
| 18.35 | 57.65 | 8 1/4 | Q 1/2 |
| 18.53 | 58.21 | 8 1/2 | Q 3/4 |
| 18.69 | 58.72 | 8 3/4 | R 1/4 |
| 18.89 | 59.34 | 9 | R 3/4 |
| 19.22 | 60.38 | 9 1/4 | S 1/4 |
| 19.41 | 60.98 | 9 1/2 | S 3/4 |
| 19.62 | 61.64 | 9 3/4 | T 1/4 |
| 19.84 | 62.33 | 10 | T 1/2 |
| 20.02 | 62.89 | 10 1/4 | U |
| 20.20 | 63.46 | 10 1/2 | U 1/2 |
| 20.44 | 64.21 | 10 3/4 | V 1/4 |
| 20.68 | 64.97 | 11 | V 1/2 |
| 20.85 | 65.50 | 11 1/4 | W 1/4 |
| 21.08 | 66.22 | 11 1/2 | W 3/4 |
| 21.24 | 66.73 | 11 3/4 | X 1/4 |
| 21.49 | 67.51 | 12 | Y |
| 21.69 | 68.14 | 12 1/4 | Y 1/2 |
| 21.89 | 68.77 | 12 1/2 | Z |
| 22.10 | 69.43 | 12 3/4 | Z +1/2 |
| 22.33 | 70.15 | 13 | Z+1 |
| 22.54 | 70.81 | 13 1/4 | Z+1 1/2 |
| 22.60 | 71.00 | 13 1/2 | Z+2 |
| 22.92 | 72.01 | 13 3/4 | Z+2 1/2 |
| 23.16 | 72.76 | 14 | Z+3 |
| 23.37 | 73.42 | 14 1/4 | Z+3 1/2 |
| 23.55 | 73.98 | 14 1/2 | Z+4 |
| 23.78 | 74.71 | 14 3/4 | Z+4 1/2 |
| 24 | 75.4 | 15 | Z+5 |
| 24.19 | 76 | 15 1/4 | Z+5 1/2 |
| 24.41 | 76.69 | 15 1/2 | Z+6 |
| 24.61 | 77.31 | 15 3/4 | Z+6 1/2 |
| 24.83 | 78 | 16 | Z+7 |
The Hands-On Way
Found the ring? Here’s a quick way to check your perfect fit:
-
Prepare a small tool.
Take a measuring tape, a piece of string, or a narrow strip of paper. -
Measure your finger.
Wrap it gently around the finger you’ll wear the ring on. -
Get your measurement.
Lay the string or paper flat and measure the distance to your mark with a ruler. Compare that number to the size chart above (or below) to find the nearest match.
Measure an Existing Ring
A simple method if you’re preparing a surprise or just checking your size at home:
-
Pick the right ring.
Choose one that fits comfortably on the finger you plan to wear your new ring on. -
Measure the inner diameter.
Place the ring on a flat surface and measure its inside diameter in millimeters (mm). -
Compare with the chart.
Match your measurement to the closest ring size using the guide above (or below).
SIZE*
Get it between:
February 26th - March 5thProduct Details
Preparation Time
Our jewelry pieces are created individually for each customer. Crafting normally takes 5–10 days, based on the design’s complexity.
Shipping and Returns
- Complimentary Shipping on all jewelry.
- Delivery time (after producing):
• USA: 10–19 days
• Europe & North America: 10–17 days
• Rest of the world: 15–27 days - Carriers: USPS, UPS, FedEx, Royal Mail, La Poste, Canada Post, and other national postal services.
- Packaging: Every order comes in a secure Stronzen gift box.
- Guarantee: We take full responsibility until delivery. Lost or damaged parcels will be replaced.
- Customs: Import duties/taxes are the buyer’s responsibility.
- Returns: 30-day return policy for non-personalized jewelry. Items must be unworn, in original packaging.
- Exceptions: Engraved or custom-made pieces are final sale (unless defective).
- Exclusions: No shipping to Brazil, Cuba, North Korea, Iran, Syria, Russia, or Belarus.
Care
ALWAYS:
- Store silver jewelry separately to avoid scratches – use soft pouches, boxes with dividers, or individual cases.
- Remove jewelry before showering, swimming, cleaning, sports, or gardening. Moisture, sweat, and chemicals can dull the shine.
- Put on rings and necklaces last when getting dressed to protect them from cosmetics, perfumes, and sprays.
- Clean silver gently with a soft cloth or a special polishing cloth to maintain brightness.
NEVER:
- Expose silver to harsh chemicals, detergents, or aggressive cleaning agents.
- Leave jewelry in humid places such as bathrooms – it can cause tarnishing.
- Wear silver while cooking or using strong household products.
- Store pieces under direct sunlight – prolonged exposure may affect stones or finishes.
Choose options
| Inside Diameter | Inside Circumference | Sizes | |
| mm | mm | USA & Canada | British & Australian |
| 14.86 | 46.68 | 4 | H 1/2 |
| 15.01 | 47.25 | 4 1/4 | I |
| 15.27 | 47.97 | 4 1/2 | I 1/2 |
| 15.53 | 48.79 | 4 3/4 | J 1/4 |
| 15.70 | 49.32 | 5 | J 1/2 |
| 15.90 | 49.95 | 5 1/4 | K 1/4 |
| 16.1 | 50.58 | 5 1/2 | L |
| 16.30 | 51.21 | 5 3/4 | L 1/4 |
| 16.51 | 51.87 | 6 | M |
| 16.71 | 52.50 | 6 1/4 | M 1/2 |
| 16.92 | 53.16 | 6 1/2 | N |
| 17.13 | 53.82 | 6 3/4 | N 1/2 |
| 17.35 | 54.51 | 7 | O |
| 17.45 | 54.82 | 7 1/4 | O 1/2 |
| 17.75 | 55.76 | 7 1/2 | P |
| 17.97 | 56.45 | 7 3/4 | P 1/2 |
| 18.19 | 57.15 | 8 | Q |
| 18.35 | 57.65 | 8 1/4 | Q 1/2 |
| 18.53 | 58.21 | 8 1/2 | Q 3/4 |
| 18.69 | 58.72 | 8 3/4 | R 1/4 |
| 18.89 | 59.34 | 9 | R 3/4 |
| 19.22 | 60.38 | 9 1/4 | S 1/4 |
| 19.41 | 60.98 | 9 1/2 | S 3/4 |
| 19.62 | 61.64 | 9 3/4 | T 1/4 |
| 19.84 | 62.33 | 10 | T 1/2 |
| 20.02 | 62.89 | 10 1/4 | U |
| 20.20 | 63.46 | 10 1/2 | U 1/2 |
| 20.44 | 64.21 | 10 3/4 | V 1/4 |
| 20.68 | 64.97 | 11 | V 1/2 |
| 20.85 | 65.50 | 11 1/4 | W 1/4 |
| 21.08 | 66.22 | 11 1/2 | W 3/4 |
| 21.24 | 66.73 | 11 3/4 | X 1/4 |
| 21.49 | 67.51 | 12 | Y |
| 21.69 | 68.14 | 12 1/4 | Y 1/2 |
| 21.89 | 68.77 | 12 1/2 | Z |
| 22.10 | 69.43 | 12 3/4 | Z +1/2 |
| 22.33 | 70.15 | 13 | Z+1 |
| 22.54 | 70.81 | 13 1/4 | Z+1 1/2 |
| 22.60 | 71.00 | 13 1/2 | Z+2 |
| 22.92 | 72.01 | 13 3/4 | Z+2 1/2 |
| 23.16 | 72.76 | 14 | Z+3 |
| 23.37 | 73.42 | 14 1/4 | Z+3 1/2 |
| 23.55 | 73.98 | 14 1/2 | Z+4 |
| 23.78 | 74.71 | 14 3/4 | Z+4 1/2 |
| 24 | 75.4 | 15 | Z+5 |
| 24.19 | 76 | 15 1/4 | Z+5 1/2 |
| 24.41 | 76.69 | 15 1/2 | Z+6 |
| 24.61 | 77.31 | 15 3/4 | Z+6 1/2 |
| 24.83 | 78 | 16 | Z+7 |
The Hands-On Way
Found the ring? Here’s a quick way to check your perfect fit:
-
Prepare a small tool.
Take a measuring tape, a piece of string, or a narrow strip of paper. -
Measure your finger.
Wrap it gently around the finger you’ll wear the ring on. -
Get your measurement.
Lay the string or paper flat and measure the distance to your mark with a ruler. Compare that number to the size chart above (or below) to find the nearest match.
Measure an Existing Ring
A simple method if you’re preparing a surprise or just checking your size at home:
-
Pick the right ring.
Choose one that fits comfortably on the finger you plan to wear your new ring on. -
Measure the inner diameter.
Place the ring on a flat surface and measure its inside diameter in millimeters (mm). -
Compare with the chart.
Match your measurement to the closest ring size using the guide above (or below).
SIZE*
Why Our Signet Stands Apart
- Crafted for a Lifetime
Fine sterling silver and handcrafted build with solid back ensure it can be worn and treasured for decades.
- Personal Connection
We create a mark of personal style you can make truly yours. Choose a design and stones you like. Personalize it with the engraving you want. If you wish to modify the design, our team will work with you to bring your ideas to life.
- Ready to Impress
Comes in gift packaging, creating an unforgettable unboxing moment.
- Comfort for Everyday Wear
Designed for daily wear, so the owner can enjoy it without keeping it in a box.
- Meaning that lasts
A signet ring carries heritage, symbolism, and a story. It is a gift that will be remembered for years. Signets have been a mark of distinction for centuries – perfect for marking life's milestones. We craft symbols, not just accessories.
A Gift They'll Remember
A signet ring is the perfect way to mark life's most important moments — milestones, birthdays and anniversaries, holidays and special celebrations. It is a gift that speaks without words, carrying the weight of memories and the voice of respect.
It might honor success, mark a shared journey, and simply say "you matter". Either way, it's part of the story. STRONZEN's secure branded box is designed for a status-worthy gift, so the ring arrives ready to impress before it is even worn.
Our signets turn every wear into a reminder of the gift and the giver. For the years ahead.
WE GENUINELY CARE
Every detail is shaped with care — and is crafted just for you
When you choose a handmade piece, you're not just buying jewelry — you're connecting with something personal.
Stronzen's team treats each order as an individual story. We listen.
We make. We stay in touch.
That's how it's always been – and always will be.
We use only high-quality materials that last. We believe your jewelry should feel as meaningful ten years from now as it did the day you opened the box. That's why we offer Limited Lifetime Warranty. That's why we're here to support you long after delivery.
What's always included:
Lifetime Warranty
Free & Secure Shipping
Personalized Engraving at No Cost
Complimentary Gift Packaging
One-Time Free Resizing
30-Day Returns & Exchanges
Dedicated Customer SupportWe stand by our craft – and we stand with our customers. Always.
Reviews
Frequently Asked Questions
Yes. All STRONZEN jewelry is crafted by hand with great care and high quality. We stand behind our work and give a Limited Lifetime Warranty.
We offer several options for customizing your necklace pendant:
- You can add a custom engraving inside the ring.
- In most rings with stones, we offer you the option to choose the stone you want from our list.
- We can slightly adjust the dimensions of the ring upon request. Just contact us with the details, and we will get back to you with a response.
Payments can be made by credit/debit card, PayPal, Google Pay, or Apple Pay. If you face difficulties, we’re here to help.
Your order is covered until it’s safely in your hands. If the package is lost or damaged, we’ll ship a new one right away.
International buyers are responsible for any customs duties or taxes applied by their own country.
To keep the details sharp, avoid harsh cleaners. Use a soft cloth or a silver polishing wipe instead.