Sphere Diamond
Classic 0.50 Carat Round Cut 4-Prong Cathedral Lab Grown Diamond Solitaire Engagement Ring
Classic 0.50 Carat Round Cut 4-Prong Cathedral Lab Grown Diamond Solitaire Engagement Ring
Material
Product Details
Product Details
- Metal: White gold 18k/ Yellow gold 18k/ Rose gold 18k/ Platinum
- Diamond type: Lab Grown Diamond
- Carat: 0.3-10+ carats
- Color: D/ E/ F/ G
- Clarity: IF/ VVS1/ VVS2/ VS1/ VS2
- Certification: 1 carats above IGI Certificate
Shipping & Delivery
Shipping & Delivery
- Free Shipping
- Delivered in Discreet Packaging
- Professional Appraisal
- Sphere Diamond Premium Silk Box
- Lifetime Warranty
- Lifetime Cleaning Service
- Resize Service
- FAQ
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Loved by customers for its elegant design, brilliant diamond sparkle, and fine craftsmanship.
Customer Review
Google Reviews
Classic 0.50 Carat Round Cut 4-Prong Cathedral Lab Grown Diamond Solitaire Engagement Ring
Timeless, refined and designed to let the diamond take center stage, this Classic 0.50 Carat Round Cut Lab Grown Diamond Solitaire Engagement Ring by Sphere Diamond features a round brilliant lab grown diamond secured in an elegant four-prong setting.
Graceful cathedral shoulders rise toward the center diamond, creating a balanced profile while keeping the overall look clean and sophisticated. The polished yellow gold band adds warmth and timeless character, making this ring an elegant choice for an engagement, proposal, anniversary or meaningful everyday piece.
0.50 Carat Round Cut Lab Grown Diamond
The round brilliant cut is loved for its sparkle and timeless appeal. At 0.50 carat, the center diamond offers a refined, wearable size for those who prefer an understated engagement ring.
Classic 4-Prong Cathedral Solitaire Setting
Four delicate prongs securely hold the center diamond while keeping its shape visible. Cathedral-style shoulders sweep upward toward the setting, giving the ring an elegant architectural profile and a classic engagement-ring silhouette.
Diamond Certification
This 0.50 carat diamond does not come with an IGI grading report. It is inspected and certified according to Sphere Diamond standards.
For custom orders, individual lab grown diamonds weighing 1.00 carat or more come with an IGI grading report. This threshold applies to each diamond, not the total diamond weight of the ring.
Product Highlights
- 0.50 carat round brilliant cut lab grown diamond
- Inspected and certified according to Sphere Diamond standards; no IGI report for this 0.50 carat diamond
- Classic solitaire engagement ring
- Four-prong diamond setting
- Graceful cathedral-style shoulders
- Polished yellow gold band
- Suitable for proposals, engagements and anniversaries
- Custom-made options available
- IGI grading reports included for individual lab grown diamonds of 1.00 carat and above
- Sphere Diamond, CentralWorld Bangkok, Thailand
Lab Grown Diamond Engagement Ring in Bangkok
Discover this 0.50 carat solitaire at Sphere Diamond, CentralWorld Bangkok. Compare diamond sizes, explore setting styles and discuss custom-made options with our team to create an engagement ring that reflects your preferences and budget.
Contact Diamond Specialist

Signature Collection
Inspired by timeless strength and elegance of the Eiffel-Tower, a symbol of enduring love at the heart of Paris, Meticulously crafted to cradle your diamond with grace, and illuminate every moment of your love story
Product Questions
Frequently Asked Questions
Is the diamond IGI or GIA certified?
Yes.
Sphere Diamond lab-grown diamonds are IGI certified, while natural diamonds are GIA certified. Each certificate verifies the diamond’s cut, color, clarity, and carat weight for complete transparency and confidence.
Can I customize the center diamond?
Absolutely.
You can personalize the diamond shape, carat size, color, clarity, and metal type to create a ring that reflects your personal love story.
How long does production take?
Most new custom-made rings require approximately 7–14 business days, depending on the design and diamond selection. Ready-to-wear pieces may be available immediately.
Do you offer resizing?
Yes.
We offer ring resizing services to ensure the perfect fit. Our team will guide you through sizing before and after purchase if needed.
Is this ring available in Platinum?
Yes.
This design can be crafted in Platinum 950, 18K White Gold, 18K Yellow Gold, or 18K Rose Gold.
Can I view the ring in person at CentralWorld?
Yes.
You are welcome to visit our official boutique at CentralWorld Bangkok for a private consultation and to experience the ring in person.
Do you provide worldwide shipping?
Yes.
We offer secure worldwide shipping with careful packaging and full insurance coverage for selected destinations.
What is the warranty policy?
All Sphere Diamond jewelry comes with lifetime after-sales service support, including cleaning, inspection, and professional care recommendations. Warranty terms may vary depending on the product type and customization.
