Natural Ametrine Ring Gemstone, Flawless Ametrine Stone, Natural Ametrine Loose Gem, February Birthstone Statement Ring Stone

Showcasing a razor-sharp 50/50 color split between rich regal purple and warm golden honey, this impressive 24.05 Carat Natural Ametrine brings dramatic dual-tone brilliance to your workbench. Precision-cut into a bold 20 x 13 mm Emerald shape with a generous 11.5 mm depth, this gem offers bench goldsmiths and custom studio designers a grand 20x13mm rectangular footprint ideal for luxury cocktail rings and high-end statement pendants.

Sourced directly from the legendary Anahí Mine in Bolivia—the world's premier locality for genuine natural ametrine—this unheated specimen is a unique natural fusion of amethyst and citrine within a single quartz crystal. With flawless eye-clean clarity and crisp step-cut facet architecture, light travels effortlessly through the gem to highlight the distinct boundary between violet and yellow tones. It serves as a showstopping centerpiece for bespoke fine jewelry commissions and high-carat collector pieces.

Gemstone Specifications & Attributes:

• Gemstone: Natural Ametrine (Bi-Color Quartz)

• Form: Loose Ring / Jewelry Gemstone

• Shape: Emerald Cut (Step Cut)

• Dimensions: 20 x 13 x 11.5 mm (Standard Calibrated Size)

• Color: Bi-Color (Deep Purple Violet & Golden Yellow)

• Creation Method: Natural

• Weight: 24.05 CT

• Origin: Bolivia (Anahí Mine)

• Treatment: None (100% Natural)

• Quantity: 1 Piece

• Grade: AAA

• Clarity: Eye Clean

• Transparency: Transparent

• Drilling: Undrilled

• Cut Grade: Excellent Step Cut

• Hardness: 7.0 on Mohs Scale (Ideal for everyday durability)

• Optical Effect: Distinct 50/50 Color Zoning & Step-Cut Mirror Scintillation

• Certification: Available upon request

• Calibrated: Yes (Standard 20x13 mm Footprint)

Jeweler Benefits & Bench Advantages:

• Standard 20x13 mm Footprint: Precision calibrated dimensions seat smoothly into large rectangular prong, basket, or bezel settings without custom lapidary modifications.

• Sharp Natural Color Division: High contrast between the amethyst and citrine zones creates a striking visual impact for custom statement designs.

• Great Daily Durability: A Mohs hardness rating of 7.0 provides excellent scratch resistance and easy bench handling during setting.

• Famous Bolivian Provenance: Sourced from Bolivia's historic Anahí deposit, world-renowned for producing the finest natural bi-color quartz.

Goldsmith & Setting Advice:

• Metal Pairings: Exceptional in 18k yellow gold to accentuate the citrine half, or in two-tone 18k yellow and white gold/platinum to highlight both purple and golden hues simultaneously.

• Bench Handling: Highly stable under standard bench tools; sets securely into corner prongs, heavy claws, or full bezel mountings. Cleans safely with warm soapy water and soft brushes.