1.20 CT Cushion-Cut Lab Grown Diamond Halo Engagement Ring
1.20 CT Cushion-Cut Lab Grown Diamond Halo Engagement Ring
Couldn't load pickup availability
● Make It Yours - Order today & get it by 29th 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
Where elegance meets ethical luxury. This stunning piece features a dazzling 1.20 CT cushion-cut diamond, celebrated for its excellent cut and remarkable brilliance. Available in striking D, VVS1, E, VVS1, or EF, VS1 grades, this diamond promises a captivating sparkle that will take your breath away.
Complementary Side Stones
Complementing the central stone are side stones crafted from lab-grown diamonds, weighing a total of 0.74 TCW. These round gems boast DEF color and VS clarity, enhancing the ring's overall radiance and charm.
Metal Options
The ring is set in solid gold, available in your choice of white, yellow, or rose gold, with purities of 10KT, 14KT, or 18KT to suit your personal taste and style. Each piece is accompanied by IGI certification, ensuring the highest standards of quality and authenticity.
Personalization
To make it uniquely yours, we offer free engraving in your choice of color or black, adding a personal touch to this timeless treasure.
What's Included
- A beautifully crafted jewelry box
- Certificates of authenticity
- A comprehensive jewelry cleaning kit
- A thoughtful gift card for future purchases
Additional Perks
As a token of our appreciation, a surprise gift awaits you, and our commitment to excellence extends with a lifetime limited warranty.
Celebrate Your Love Story
Celebrate your love story with a jewelry piece that embodies sophistication, sustainability, and style. This engagement ring not only marks a moment but also becomes a cherished heirloom, passed down through generations.
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





