4.2 ct Ceylon Royal Blue Sapphire · Cushion
$20,646.07
Loose gemstones typically come with certificates from authoritative institutions such as GUILD / GRC / CGRL / GRS / NGTC, etc.
Merged or bespoke rings typically come with CMA (National Jewelry and Gemstone Quality Inspection and Testing Center) certificates.
If there is no scanned copy in the product file, we promise to complete the free issuance before shipment without any extra charge.
Make a Ring with This Stone
* The bespoke mode will automatically carry this precise parameter into the inventoryWorkshop Goldworking Cycle Approximately 15-20 Working Days
Founder's LetterAtelier Director's Field NoteFounder has not filled in this section yet.
Authoritative Gemology Archive Specification (SPECIFICATIONS)
Sapphire
4.2 ct (Accurate weighing)
Cushion
Measurement provided upon order
Royal Blue
Natural
—
Not Stated
Sri Lanka
GRS
SF Express Special Delivery and 7-Day Inspection Period Commitment
Full-value express delivery via SF Express — your package is fully insured by a professional insurance company in China to ensure safe delivery. You enjoy a 7-day free-inspection period from the date of receipt. Re-appraisal at renowned institutions such as GRS, GUILD, GRC, NGTC, CMA and CGRL is welcome. If the stone does not match the accompanying certificate, we refund in full.
Picking Stone Follow-Up Customization Service and Atelier Process
After purchasing this loose stone, you can keep it at our Guangzhou Panyu office. The founder designer will provide a 1-on-1 setting design draft (watercolor hand-painted rendering). We support 18K yellow gold, platinum PT950, ancient method of wire drawing, and Edwardian delicate pearl edge craft, with a production time of 15-20 working days.
Private Salon Viewing / HD Macro Video Session
The piece is now held in the atelier private vault. You may book a private in-person viewing (with a professional light box and standard D65 illumination), or ask our WeChat concierge to arrange a 1-to-1 live HD microscopic video session with our gemologist.
Work Archive and Stone Selection Guide
4.20ct Ceylon Royal Blue Cushion Cut Sapphire Loose Stone
Product Description
This 4.20-carat Ceylon Royal Blue Cushion Cut Sapphire showcases the ultimate charm of Sapphire with its pure Royal Blue color and elegant cushion cut.
Suitable for Bespoke
This Sapphire loose stone is ideal for customizing as a center stone in rings, whether in classic styles or modern designs, to highlight its unique brilliance.
Notes
- Color: Royal Blue
- Shape: Cushion
- Carat: 4.20
- Origin: Ceylon
- Certificate Authority: GRS
- Treatment: Not specified
- Clarity: Not specified
- Cut: Not specified
- Note: Please confirm the design details with the customizer according to your specific needs.
Must-Ask Questions Before Purchase
Color gemstones are evaluated from three dimensions: hue, saturation, and brightness. We use D55 standard light source and studio light source for dual photography, without color grading. Each stone's color characteristics are indicated on the product page (such as 'Bright red with a hint of purple'), not generalized by grade. If you have a color preference, please inform us, and we will screen from the archive.
Loose stones: 7-day return policy (original packaging and certificate intact), full refund. Bespoke jewelry: Not refundable or exchangeable after production begins, but the deposit can be fully refunded before the design is confirmed. A written confirmation is required for each milestone before moving forward. 1-year warranty includes free resizing, reinforcement, and recutting.
Stock loose stones: 1-3 business days to ship + FedEx/DHL 3-7 business days delivery. Custom rings: 3-8 weeks (depending on complexity). Progress photos are sent throughout, and tracking numbers are automatically notified. +2-3 business days for remote areas.
Visa, Mastercard, Amex, Apple Pay, Google Pay, PayPal, as well as WeChat Pay, Alipay, and bank transfers. All processed by Stripe, compliant with PCI-DSS Level 1 certification, and the atelier does not handle card numbers. Custom orders require a deposit (30-50%) followed by the final payment in installments.
Simple setting: 3-4 weeks, medium complexity: 4-6 weeks, high complexity: 6-8 weeks. Calculated from the date of deposit payment. If there are fixed dates, please inform in advance, and we will assess the feasibility truthfully.
Seven steps: ①Submit requirements→②24h scheme response→③Confirmation and deposit→④Material selection→⑤Manufacturing (progress photos)→⑥Final product acceptance→⑦Final payment + shipment. Free modification before metal manufacturing; charged according to the modification content after entering the manufacturing process, and advance written notice is required.
Photos and videos are automatically sent at five stages: before model making, bezel fitting, stone placement, polishing, and final product. Also, you can request an unexpected inspection at any time via WhatsApp, and current workshop progress will be photographed within 24 hours.
Free shipping when the free shipping threshold is reached. International section FedEx Priority / DHL Express air transportation, full insurance, require a signature, and trackable; finished product stock has SF Express special delivery. Packaging is discreet with no brand identification. Self-collection is available at the exhibition hall in Guangzhou and the Greater Bay Area.
Loose stones: full refund within 7 days. Custom rings: first-time resizing is free of charge, 1-year warranty includes reinforcement/recutting. Style modification is subject to evaluation, and fees must be informed in advance. Free engraving (up to 20 characters).