Description

Gemstone Profile
​Identification: Natural Ruby (Indian Name: Manek)
​Weight: 4.05 carats (ct)
​Color: Red
​Shape & Cut: Oval mixed cut
​Measurements: Approximately 11.00 *8.10*5.30 mm
​Scientific Properties
​The report lists physical properties used to identify the stone as a ruby:
​Refractive Index (R.I.): 1.760 – 1.768 (This is the standard range for corundum/ruby).
​Specific Gravity (S.G.): 3.99 – 4.00 (This indicates the density of the material).
​Verification & Details
​Certificate Number: cglm113101
​Lab Credentials: The card mentions the lab is ISO 9001:2015 certified.
​Visuals: There is a QR code on the bottom right for digital verification and a physical stamp from the gemmologist.
​Important Note: While this certificate identifies the stone as a “Natural Ruby,” it does not specify if the stone has undergone common treatments (like heat treatment or lead-glass filling) which significantly affect market value.