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Tri Diamond Old Mine Cushion Cut Engagement Ring
Tri Diamond Old Mine Cushion Cut Engagement Ring
SKU:OJS0702
A 0.50 CT Round Diamond Pendant, On Us With $999+
A 0.75 CT Round Diamond Pendant, On Us With $1,499+
A 1.00 CT Round Diamond Pendant, On Us With $1,999+
A 0.50 CT Round Diamond Pendant, On Us With $999+
A 0.75 CT Round Diamond Pendant, On Us With $1,499+
A 1.00 CT Round Diamond Pendant, On Us With $1,999+
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Product Description
Celebrating enduring love with this three stone lab grown diamond ring, thoughtfully designed to celebrate love’s journey through the past present and future. At the heart of this stylish design lies a captivating old mine cushion cut lab diamond, admired for its soft corners, deep facets, and antique inspired shine. The center 3 carat old mine cushion cut diamond commands attention with its bold presence and warm fire, making it a striking choice among diamond engagement rings for women.
Two beautifully matched 1.40 carat old mine cushion diamonds flank the center stone gracefully to create balance in the overall silhouette of the ring. This arrangement defines past, present, and future Rings also known as Trilogy Diamond Rings or Trinity Diamond Rings, hence falling into that category. It is an arrangement that symbolizes shared milestones and commitment.
The claw prong setting ring allows maximum light to enter from all directions while securely holding each diamond in place. The slim band has a width of 1.70 MM and depth of 1.70 MM which gives it a delicate profile yet does not overpower the bold three-stone design making it just perfect for such an ensemble. Made with ethically sourced lab grown diamonds, this ring offers sustainable luxury with beauty that stands out among others hence making it one of the best options available for people searching for unique three stone engagement rings with classic appeal.
Key Features:
Diamond: Ethically sourced lab grown diamonds offering exceptional brilliance and sustainability.
Center Stone: A striking 3.00 carat old mine cushion cut lab grown diamond, known for its antique charm, soft corners, and bold glow.
Side Stones: Two perfectly matched 1.40 carat old mine cushion cut lab grown diamonds that enhance balance and visual harmony.
Ring Style: Three stone past, present, and future design symbolizing love’s journey
Setting: Secure claw prong setting that allows maximum light exposure for superior brilliance.
Band Style: Slim polished band with a polished profile, measuring 1.70 MM in width and 1.70 MM in depth.
Ring Type: Trilogy diamond ring / Trinity diamond ring, ideal as a statement engagement ring.
Occasion: Perfect for engagements, anniversaries, proposals, and meaningful milestones.
Fully Customizable Options: Available in multiple metal choices, ring sizes, diamond grades, and carat weight options to suit personal preferences.
Diamond Details
Diamond Details
| Shape | Old Mine Cushion Cut |
| Carat Weight | 3.00 CT (± 0.10 CT) |
| Dimension | 8.50 MM (± 0.10 MM) |
| Color/Clarity | MN_VS |
Diamond Details
| Shape | Old Mine Cushion Cut |
| Carat Weight | 1.40 TCW (± 0.10 CT) |
| Dimension | 5.30 MM (± 0.10 MM) |
| Color/Clarity | EF_VS |
Ring Details
| Ring Width | 1.70 MM [Customization Possible] |
| Ring Depth | 1.70 MM [Customization Possible] |
| Type | Lab Grown Diamond |
| Metal Purity |
Silver (925,935), Solid Gold (10KT, 14KT, 18KT); 950 Platinum |
| Metal Tone |
Yellow, White, Rose |
| Stamp/Hallmark | Yes |
| Jewelry Certificate | Ouros Brand Authentic Jewelry Certificate - Contact Us for Your Certificate |
MAKING PROCESS
From the first order to the final quality check, every piece passes through a carefully controlled craftsmanship journey.
Order Received
Order details are reviewed and production specifications are confirmed.
CAD Model
A precise 3D model is created according to the approved design.
Stone Making
Diamonds are prepared and selected to match the design specifications.
Wax Model
The CAD design is transformed into a detailed wax model.
Casting
The wax model is cast in the selected metal to form the jewelry.
Filing
The cast piece is refined and corrected for a clean, precise structure.
Pre-Polish
The surface is smoothed and prepared for stone setting.
Setting
The surface is smoothed and prepared for stone setting.
Final Polish
The piece is polished to achieve its final smooth and refined finish.
Quality Check
Every detail is inspected to ensure our quality standards are met.
Shipping
The approved piece is securely packed and prepared for delivery.
Shipping Policy
International Shipping
We offer international shipping, which takes 8–14 business days after dispatch.
NYC Office Pickup
if this item is available at our NYC office. overnight U.S. shipping can be arranged upon request for an additional fee.
Insured & Trackable
All orders are fully insured and trackable, with signature confirmation available upon request.
Shipping Questions
For any shipping-related questions, please refer to our Shipping Policy or contact our customer support team.
RETURN POLICY
Return Window
You may request a return within 30 days of delivery.
Manufacturing Defects
If a manufacturing defect is identified within 30 days of delivery, we're happy to offer a free repair.
Return Eligibility
Returns based on personal preference after delivery are not eligible. All returns must be pre-approved before being sent back.
After 30 Days
For concerns reported after 30 days, repair services may be available at an additional charge.
Contact & Assistance
For assistance with your return or repair request, please contact contact@ourosjewels.com.




Custom Diamond Request Form
From our hands, to a piece made for yours.
Every OUROS piece begins with precision, craftsmanship, and a commitment to quality.
From the first CAD design to the final quality check, every detail is carefully considered and refined by skilled craftsmen.
Our jewelry passes through a meticulous process of casting, finishing, diamond setting, polishing, and inspection before it reaches you.
Made with intention. Finished with precision. Created to be cherished.
The Brilliance Behind Every Diamond
A diamond’s beauty begins long before it reaches your jewelry. At OUROS, every stone is thoughtfully created and refined for exceptional brilliance.
From its growth and precise cutting to the final polish, each stage is carefully considered to reveal the diamond’s unique character.
The result is a lab-grown diamond made with precision, finished with purpose, and created to be admired for years to come.
Stories Of Brilliance
Trusted Worldwide by 25,000+ Happy Clients
Kim Vaughan
Zamarade Y
Denise Cwik
Kimberly Arcoleo
chris crawford
Merry Gibson
Kelly V
C. Lor

JM® Care Plan
Care That Keeps Every Detail Brilliant :
Keep your jewelry looking its best with dedicated care for cleaning, polishing, resizing, repairs, and stone replacement — so every piece stays beautiful for years to come.

JM® Care Plan
Care That Keeps Every Detail Brilliant :
Keep your jewelry looking its best with dedicated care for cleaning, polishing, resizing, repairs, and stone replacement — so every piece stays beautiful for years to come.
JM® Care Plan
Care That Keeps Every Detail Brilliant :
Keep your jewelry looking its best with dedicated care for cleaning, polishing, resizing, repairs, and stone replacement — so every piece stays beautiful for years to come.
Our Services
Get personalized engagement ring guidance from our experts, both in person and online.
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