Morse Code Fire Opal Heart Day Collar
Slip into something that speaks your language—without saying a word. This seductive day collar features a stunning rose gold fire opal heart, bringing a romantic glow to a design that's both sweet and submissive, elegant and discreet.
At the center is your custom 6-letter Morse code word, hidden in plain sight through a delicate arrangement of anodized aluminum rings. Whether it's a name, a command, or a private word with special meaning, your collar tells your story in a way only you—and the person you're sharing it with—need to understand.
💎 Materials
-
Heart: Rose gold-plated 925 sterling silver setting with a lab-created fire opal
-
Morse Code: Custom 6-letter word created with anodized aluminum rings
-
O-Ring: Black anodized aluminum
-
Chain: 4mm black stainless steel wheat chain
-
Morse Code Rings: Choose your preferred available colors, shown is henna and vampire red
📏 Sizing
-
Heart Pendant: Approximately 22mm W x 27mm H
-
Chain: 4mm wheat chain
-
Length: Choose your preferred chain length when ordering
💌 Beautifully packaged and ready for gifting, this collar combines personalized Morse code with the luminous beauty of a fire opal heart. It's more than jewelry—it's a secret message you can wear every day.
We craft our Captive™️ Lock ensuring transparency in the materials used. Additionally, we create the accessories that complement these locks, maintaining control over the entire production process.

Watch Video of Captive™️ Lock Here
Captive™ Lock- *Stainless Steel *Keys *24/7 Wear
This is our best lock, expertly crafted by us to be durable, stylish, and user-friendly. It securely fastens and releases with a key.

Captive™ Forever Locks- *Sterling Silver *24/7 Wear
This lock is a single-use item. Once locked, it cannot be removed without cutting it. We include two locks for your convenience. Perfect for those who want to keep their jewelry secure and prefer a lightweight option. Only comes in silver.
Hex Lock- *Silver Plated Brass and Stainless Steel - Medium strength lock fastens with a key, two keys included. Plating may diminish, revealing the brass underneath. Those with sensitive skin may find this irritating; we highly recommend the Captive™️ Lock as an excellent alternative, made of stainless steel which is hypoallergenic and retains its glossy silver hue.
How to Measure Your Neck for a Necklace
Finding the perfect necklace fit can elevate your style and comfort, whether you’re selecting a casual piece or a special day collar. Here’s a step-by-step guide to accurately measure your neck so your necklace sits exactly where you want it.
1. Gather What You Need
To measure your neck, you’ll need:
- A soft, flexible measuring tape (fabric tape works best)
- A mirror (optional, but helpful for seeing the fit)
- A string and ruler if you don’t have a measuring tape
2. Find Your Neck Measurement
- Wrap the measuring tape snugly around your neck, right at the base. This is typically right above your collarbone. Make sure the tape sits comfortably, without pulling too tight.
- Record the measurement where the tape meets. This number is your neck’s circumference.
If you’re using a string:
- Wrap the string around your neck in the same spot.
- Mark where the end meets.
- Lay the string flat against a ruler to measure the length.
3. Add Length for Desired Necklace Fit
Use your neck measurement as a starting point, then add length to determine where you’d like the necklace to sit:
- Choker Fit: Add 1-2 inches to your neck measurement for a close, comfortable fit.
- Standard Collar Fit: For day collars and discreet pieces, add about 2-3 inches to your neck measurement.
- Pendant or Lariat Style: Adding 3-5 inches or more will create a looser, longer style that falls at your collarbone or lower.


Ring Size Guide
All ring sizes listed are US standard ring sizes. If you are located outside the United States, we recommend checking a ring size conversion chart before ordering to ensure the best fit.
If you're unsure of your size, a local jeweler can typically measure your finger quickly and accurately.
For this printable ring size chart please email me sales@captivecollars.com

We make our items measurement end to end including the clasp/ lock. We allow .25" allowance in measurement.
If you have questions about what size to order don't hesitate to reach out. sales@captivecollars.com
All transactions are final.
All orders are custom-handmade to order at the time of purchase. Because each item is made to order and for hygiene and safety reasons, we do not accept resizes, exchanges, returns, cancellations, or give refunds. This policy is clearly stated in our Terms of Service, Sizing Guide, FAQs, Refund Policy, and Order Confirmation. Please carefully review sizing information and product details before placing your order.






