18K Solid Gold 1 Carat Round Cut Lab Grown Diamond Solitaire Ring
$950.00
Classic 1ct round cut diamond solitaire ring in 18K solid gold with prong setting. IGI Certified.
Riyanika Jewels Size Guide
Precision first. Use this guide to determine accurate sizes for rings, bangles/bracelets, and necklaces. All recommendations align to luxury-fit standards for 18K gold jewelry.
Ring Size
Method A — Measure an Existing Ring
- Place a ring that fits the intended finger on a millimetre ruler.
- Measure the inner diameter in mm (do not include metal thickness).
- Match to the quick reference below. Average 2–3 readings.
Method B — Measure Your Finger
- Wrap a narrow paper strip or thread around the base of the finger—snug, not tight.
- Mark the overlap. Measure the length in mm = circumference.
- Match to the quick reference below.
Professional Tips
- Measure at day’s end; hands are smaller in the morning and in cold conditions.
- If between sizes, select the larger.
- For wide bands (≥4 mm), size up by ¼–½.
- For full eternity rings, order exact size; these cannot be resized.
- Toi et Moi and multi-stone designs: match finger size and shank width for balance.
Popular Ring Sizes — Quick Reference
(US ↔ India ISO; values approximate)
| US Size | Inside Diameter (mm) | Inside Circumference (mm) |
| 3 | 14.1 | 44.3 |
| 3.5 | 14.5 | 45.6 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.1 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.6 |
| 8 | 18.1 | 56.9 |
| 8.5 | 18.5 | 58.1 |
| 9 | 19 | 59.7 |
| 9.5 | 19.4 | 61 |
| 10 | 19.8 | 62.2 |
| 10.5 | 20.2 | 63.5 |
| 11 | 20.6 | 64.7 |
| 11.5 | 21 | 66 |
| 12 | 21.4 | 67.2 |
| 12.5 | 21.8 | 68.5 |
| 13 | 22.3 | 70.1 |
| 14 | 23.2 | 72.9 |
Bangle & Bracelet Size
Closed Bangles (Fixed Size)
Measure the widest part of your hand while bringing thumb to little finger.
Chain Bracelets (With Clasp)
- Measure wrist at the bone in mm.
- Add slack based on preference:
- Snug: +10 mm
- Classic (recommended): +15 mm
- Loose/Stacking: +20 mm
| SIZES | LENGTH (INCHES) | LENGTH (MM) |
| Extra Small (XS) | 5-5.5 | 12.7-14 |
| Small (S) | 5.5-6 | 14-15.2 |
| Medium (M) | 6-6.5 | 15.2-16.5 |
| Large (L) | 6.5-7 | 16.5-17.8 |
| Extra Large (XL) | 7-7.5 | 17.8-19 |
| 2X-Large (2XL) | 7.5-8 | 19-20.3 |
| 3X-Large (3XL) | 8-8.5 | 20.3-21.6 |
Necklace Length
Reference on an average neck (34–36 cm). Adjust for personal proportions and neckline.
| Length (inches) | Length (cm) |
| 16 | 41 |
| 18 | 46 |
| 22 | 51 |
| 22 | 56 |
| 24 | 61 |
| 26 | 66 |
| 28 | 71 |
| 30 | 76 |
FAQs
- What if I’m between two sizes?
Select the larger size. Wide bands and eternity profiles feel tighter. - Do seasons affect fit?
Yes. Heat and humidity can add up to half a size. Measure late in the day. - Can you resize?
Most solitaire and pavé rings: ±1 size. Full eternity rings: not resizable—order exact size. - What is RiyaniKa’s default bracelet/bangle size?
Size 17 unless you instruct otherwise at checkout. - How accurate are these charts?
They follow industry standards with typical manufacturing tolerances of ±0.1–0.2 mm. - Can you help match sizes for a gift?
Provide a photo of an existing ring on a flat ruler, or an inside-diameter reading. Concierge will confirm the closest size.
Support
Personal sizing assistance, printable sizer PDF, and bespoke fit checks available by request.
Email: contact@riyanikajewels.com • WhatsApp: +85291500032
Embodying timeless elegance, this 18K Solid Gold Round Cut Diamond Solitaire Ring is a classic choice for those who appreciate pure sophistication. At its heart lies a 1.00-carat Lab Grown round brilliant diamond, expertly cut to maximize brilliance and fire. With its exceptional E color and VS1 clarity, the stone radiates unmatched sparkle and clarity.
The diamond is gracefully set in a secure prong setting, elevating it above the band to capture light from every angle. Crafted in premium 18K solid gold, the band enhances the diamond’s brilliance with a refined, polished finish.
Perfect as an engagement ring, wedding ring, or anniversary gift, this timeless solitaire is a symbol of everlasting love and commitment. Certified by the IGI for diamond authenticity, it promises both luxury and trust.
Product Details:
- Metal: 18K Solid Gold
- Diamond Type: Lab Grown Diamond
- Total Carat Weight: 1ct
- Diamond Cut: Round
- Setting: Prong
- Color: E
- Clarity: VS1
- Certifications: IGI Certified
- Shipping Time: 15-22 days
We offer free shipping across the World on all orders—no minimum required.
Processing & Handling: 5–10 business days
Shipping Time: 10–15 business days
Total Delivery Time: 15–25 business days from the date of order
Carriers:Â USPS & UPS
Please inspect your package upon delivery for any damage or tampering before signing.
For assistance, contact us at contact@riyanikajewels.com
Thank you for shopping with Riyanika Jewels
At Riyanika Jewels, we take pride in offering high-quality fine jewelry crafted in 18K Solid Gold, adorned with both Natural and Lab-Grown Diamonds. To ensure complete transparency and peace of mind, every piece of jewelry is accompanied by trusted certifications that verify its authenticity and quality.
Gold Certification
All our jewelry is crafted in 18K Solid Gold and comes with the official government-recognized certification that guarantees the purity and authenticity of gold. This ensures that every piece you own is not only elegant but also genuine in its gold quality.
Lab-Grown Solitaire Jewelry
Our lab-grown diamond jewelry is certified by the International Gemological Institute (IGI). Each certificate verifies the diamond’s authenticity, along with detailed grading of cut, clarity, color, and carat weight—ensuring you receive a diamond of the highest standard.
Gemstone Jewelry
Every gemstone piece is accompanied by a detailed Gemologist Report, offering an in-depth analysis of the stone’s unique characteristics.
Optional Certification: Customers may also request certification from globally recognized institutions such as IGI or GIA. Please note that this service requires an additional fee and may take 30–40 days for processing.
At Riyanika Jewels, every piece is crafted with love in 18K Solid Gold, adorned with Natural and Lab-Grown Diamonds. To keep your jewelry looking as radiant as the day you received it, follow these simple care tips:
1. Clean Regularly
Gently clean your jewelry using a mild soap and lukewarm water solution. Use a soft brush to remove dirt, rinse thoroughly, and dry with a soft lint-free cloth.
2. Store Safely
Keep your jewelry in a dry place, ideally in a jewelry box or soft pouch. Store pieces separately to prevent scratches and tangling.
3. Avoid Harsh Chemicals
Remove your jewelry before swimming, bathing, or using cleaning products. Chemicals such as chlorine and detergents can damage both gold and diamonds.
4. Handle with Care
Avoid wearing your jewelry during strenuous activities like exercising, gardening, or heavy lifting. This prevents accidental knocks, scratches, or loosening of stones.
5. Inspect Periodically
Check your jewelry regularly for loose stones or worn settings. If you notice any issues, contact us immediately for professional repair and maintenance.
By following these tips, your 18K Solid Gold Natural and Lab-Grown Diamond Jewelry will remain stunning for years to come.
For any questions or assistance, feel free to reach out to us at contact@riyanikajewels.com.
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