How can you tell natural diamonds from lab-grown diamonds based on growth features?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Study for the DCA Gemology Test. Utilize flashcards and multiple-choice questions, each question offering hints and explanations. Prepare effectively for your exam with confidence!

Multiple Choice

How can you tell natural diamonds from lab-grown diamonds based on growth features?

Explanation:
Growth features reflect the environment in which a diamond formed. Lab-grown diamonds carry telltale signs from their fabrication: HPHT-grown stones can trap metallic inclusions or metallic flux within the crystal, while CVD-grown stones often reveal distinct growth lines or color zoning from layered deposition. Natural diamonds, formed deep in the mantle, generally lack these lab-specific features and instead show mineral inclusions and irregular growth textures. So, spotting metallic inclusions or clear growth lines/color zoning is a strong indicator of a lab-grown origin rather than a natural one.

Growth features reflect the environment in which a diamond formed. Lab-grown diamonds carry telltale signs from their fabrication: HPHT-grown stones can trap metallic inclusions or metallic flux within the crystal, while CVD-grown stones often reveal distinct growth lines or color zoning from layered deposition. Natural diamonds, formed deep in the mantle, generally lack these lab-specific features and instead show mineral inclusions and irregular growth textures. So, spotting metallic inclusions or clear growth lines/color zoning is a strong indicator of a lab-grown origin rather than a natural one.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy