5.11 Carat Natural Unheated Thai Green Sapphire

An extraordinary collector-grade gem featuring a rare 5.11-carat weight, 100% natural unheated purity, and vivid olive-green brilliance.

Sourced from the historic sapphire fields of Thailand, this gemstone showcases a luminous green hue with captivating olive and golden undertones.

Unlike the vast majority of sapphires on the market today, this stone is completely unheated and untreated, preserving its natural origin and untouched beauty. Its masterfully proportioned oval cut gives it outstanding light return and scintillation across every facet. Remarkably clean with high clarity, this 5.11ct gem makes an impressive center stone for a modern engagement ring or an elegant heirloom pendant.

Gemstone Specifications:

• Gem Type: Natural Sapphire ( Corundum )
• Carat Weight: 5.11 ct
• Color: Rich Thai Green / Olive Green
• Cut / Shape: Faceted Oval Cut
• Treatment: 100% Unheated & Untreated (Natural)
• Clarity: Clean / High Transparency
• Origin: Thailand
• Certification: Fully Certified (Lab Certificate Included)
• Hardness: 9 on Mohs Scale (Ideal for everyday wear)

Key Features & Highlights

• 100% Natural & Unheated: Free from heat treatment, ensuring maximum rarity, natural authenticity, and long-term value.
• Substantial 5.11 Ct Scale: A commanding size that offers incredible presence as a centerpiece in custom jewelry.
• Exceptional Precision Faceting: Cut to maximize fire, brilliance, and color saturation in natural daylight or evening light.
• Full Gemological Certification: Comes with an independent lab certificate confirming authenticity and unheated status.
• Durable for Daily Wear: With a Mohs hardness second only to diamond, sapphires are exceptionally resistant to scratching and wear.

Custom Jewelry Ideas

• Alternative Engagement Ring: Mount this oval gem in an 18K yellow gold or platinum setting—accented by tapered baguette diamonds or a delicate halo—for a unique, durable engagement ring.
• Statement Pendant: Frame it in a clean solitaire or diamond-paved bezel setting to create an eye-catching luxury necklace.