4.20 CT Oval Lab-Grown Diamond Hidden Halo Engagement Ring
4.20 CT Oval Lab-Grown Diamond Hidden Halo Engagement Ring
Couldn't load pickup availability
● Make It Yours - Order today & get it by 31th Jan.
Need something sooner?
For urgent orders, please contact our customer support team at: support@thealteredcarbon.com.
Everything you need, worry-free.
Free Shipping
Ring Resizing
Lifetime Guarante & Care
Conflict-Free Diamonds
Hassle Free Return
Giving Back
● Description
Introducing Our Exquisite Lab-Grown Diamond Engagement Ring
A true testament to elegance and sustainability, perfect for those who cherish ethical luxury.
Center Diamond
At the heart of this magnificent piece is a stunning 4.20-carat oval diamond, ethically cultivated to ensure top-tier quality and brilliance. With an impeccable D/VVS1, E/VVS1, or EF/VS1 color grade, this diamond captivates with its flawless sparkle. Shines with an excellent cut that enhances its breathtaking beauty, ensuring a captivating play of light.
Side Stones
Complementing this center diamond are side stones, meticulously crafted lab-grown diamonds weighing a total of 0.70 carats. These round gems, with their DEF color and VS clarity, add a dazzling accent that elevates the ring's sophistication.
Craftsmanship
Crafted in solid gold, this engagement ring is available in your choice of white, yellow, or rose gold, and offers purity options of 10KT, 14KT, and 18KT. Each piece is authenticated, showcasing a hallmark of quality and genuine craftsmanship. Enhance your personal touch with complimentary engraving, available in color or black, to create a meaningful memento that speaks to your unique journey.
Additional Amenities
Your purchase is accompanied by a luxurious set that includes:
- A beautifully crafted engagement ring
- A jewelry box to treasure your piece
- A complete package of certificates verifying the quality and ethical origin of your diamonds
- Jewelry cleaning kit
- A gift card for your future purchase
- A surprise gift to make the experience truly unforgettable
Commitment to Quality
Our commitment to quality is fortified with a lifetime limited warranty, ensuring peace of mind as you embark on a lifetime of love and commitment. This elegant piece is not just jewelry; it's a celebration of your love and values.
Customization
Customization
Want to change this design or don’t see what you want? We can customize most existing designs or custom make a ring from scratch.
Start designing your custom piece by filling out this form.
Shipping Information
Shipping Information
Each product is made to order and will ship in approximately 3-4 weeks. For special requests please contact us. We try our best to accommodate. All products ship with signature required, tracking, and insurance through FedEx.
Read More
Warranty Repair
Warranty Repair
The Altered Carbon has mastered the craft of fine jewelry, setting the standard in the industry with its unparalleled warranty and service program. Our dedication to excellence ensures that each piece reflects our commitment to quality and customer satisfaction, making us a leader in the jewelry world.
Read More
● Virtual Appointment
See The Altered Carbon up close with a personal appointment. Explore our jewelry in person through your device. Book a Call.

Size Chart
| US | UK / Australian Size | Inside Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 3 | F | 14.1 | 44.2 |
| 3.5 | G | 14.5 | 45.5 |
| 4 | H½ | 14.9 | 46.8 |
| 4.5 | I½ | 15.3 | 48.0 |
| 5 | J½ | 15.7 | 49.3 |
| 5.5 | K½ | 16.1 | 50.6 |
| 6 | L½ | 16.5 | 51.9 |
| 6.5 | M½ | 16.9 | 53.1 |
| 7 | N½ | 17.3 | 54.4 |
| 7.5 | O½ | 17.7 | 55.7 |
| 8 | P½ | 18.1 | 57.0 |
| 8.5 | Q½ | 18.5 | 58.3 |
| 9 | R½ | 19.0 | 59.5 |
| 9.5 | S½ | 19.4 | 60.8 |
| 10 | T½ | 19.8 | 62.1 |
| 10.5 | U½ | 20.2 | 63.4 |
| 11 | V½ | 20.6 | 64.6 |
| 11.5 | W½ | 21.0 | 65.9 |
| 12 | X½ | 21.4 | 67.2 |
| 12.5 | Z | 21.8 | 68.5 |
| 13 | Z+1 | 22.2 | 69.7 |
| KA Size | Wrist Diameter (in) | Wrist Diameter (cm) |
|---|---|---|
| Extra Small | 4.76 – 5.25 | 12.1 – 13.3 |
| Small | 5.26 – 5.75 | 13.4 – 14.6 |
| Medium | 5.76 – 6.25 | 14.6 – 15.9 |
| Large | 6.26 – 6.75 | 15.9 – 17.1 |
| Extra Large | 6.76 – 7.25 | 17.2 – 18.4 |
| Extra Extra Large | 7.26 – 7.75 | 18.4 – 19.7 |
| Extra Extra Extra Large | 7.76 – 8.25 | 19.7 – 21.0 |
| Length (in) | Length (cm) |
|---|---|
| 16 | 40.50 |
| 18 | 45.75 |
| 20 | 50.75 |
| 24 | 61.00 |
| 30 | 76.25 |
| 36 | 91.50 |
Lab Grown Diamonds
Make Style Effortless — Lab grown diamonds offer an affordable alternative for sparkle making brilliant style effortless.
Shop By Category
What’s Included?
Our extensive collections span every generation and price point, allowing us to connect with our customers' celebrations at each stage of their lives.
Shop Confidently
Experience peace of mind with our 1 year exchange policy on all engagement rings for an equal or greater value.
Unique Serial Number
The Altered carbon jewelry piece bears a unique serial number, reflecting its distinct design and connecting you to its origins.
Certificate of Authenticity
The serial number allows you to access a digital Certificate of Authenticity showcasing the GIA verified diamonds, ensuring the authenticity and craftsmanship of your piece.
Sustainability
Ethically sourced fine jewelry crafted from recycled gold materials.
Let customers speak for us
Virtual Appointment
Discover your perfect engagement ring at a virtual showroom appointment. Explore our most sought-after designs





