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Calibrated · Loose Ruby
Lab Grown Ruby Round #5 Loose Gemstone | Faceted Red Round Ruby Stone 4mm–14mm for Rings, Earrings & Jewelry Making
Sold per stone. Pick a size; the price drops as you add more of the same stone.
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over $35 - 30-day returns
- Ships to
50+ countries
- Shape
- Round
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About these stones
PRODUCT DESCRIPTION
Lab Grown Ruby Round #5 delivers the captivating beauty of ruby in a precision-cut round gemstone designed for exceptional brilliance and color. Available in sizes from 4mm to 14mm, these vibrant red gemstones are ideal for custom jewelry and professional jewelry manufacturing.
About This Piece
Showcasing a rich ruby-red hue and outstanding sparkle, Lab Grown Ruby Round #5 is a versatile gemstone suitable for a wide range of jewelry applications. The classic round cut remains one of the most popular gemstone shapes, valued for its balanced proportions and ability to maximize light return.
Created under controlled laboratory conditions, these gemstones offer consistent color, clarity, and calibration, making them an excellent choice for jewelers, designers, and collectors seeking dependable quality. Whether used as a center stone or accent stone, the timeless round shape complements both traditional and modern jewelry styles.
Key Details
• Stone: Lab Grown Ruby #5
• Shape: Round
• Cut: Faceted
• Color: Rich Ruby Red
• Clarity: Eye Clean
• Hardness: 9 Mohs
• Sizes Available: 4mm–14mm
• Calibration: Precision Cut
• Treatment: Lab Created
Why You'll Love It
• Vibrant ruby-red color with excellent brilliance
• Precision-cut for easy setting and consistent sizing
• Durable gemstone suitable for everyday jewelry wear
• Available in a wide range of calibrated sizes
Perfect For
• Engagement Rings
• Stud Earrings
• Pendants & Necklaces
• Tennis Bracelets
• July Birthstone Jewelry
• Custom Jewelry Projects
• Jewelry Manufacturing
• Stone Replacement & Repairs
Quality Promise
Every Lab Grown Ruby Round #5 gemstone is carefully inspected for cut quality, color consistency, brilliance, and calibration before shipment. We are committed to providing gemstones suitable for professional jewelry production.
Shop Info
• Processing Time: 1–2 Business Days
• Worldwide Shipping Available
• Secure Packaging Included
• Returns Accepted Within 30 Days
• Authenticity Certificate Available Upon Request
How we grade
A: lighter colour, visible inclusions. Good for fashion pieces and practice settings.
AA: even colour, some inclusions you can see up close. Everyday jewelry.
AAA: rich colour, eye clean. Fine jewelry.
AAAA: the top colour we cut, eye clean. Statement and heirloom pieces.
Market Basics or Precision
Market Basics: good outlines; sizes and depths vary a little stone to stone. Best value for settings you adjust by hand.
Precision: even outlines and matched depths. Drops into pre-notched castings and lines up in rows and halos.



