Description

Gemstone Specifications

​The following technical details are listed on the certificate:

​Certificate Number: cglm113106
​Weight: 5.64 carats (ct)
​Shape/Cut: Oval mixed cut
​Measurements: Approximately 12.20 x 9.50 x 4.50 mm
​Refractive Index (R.I.): 1.760 – 1.768
​Specific Gravity (S.G.): 3.99 – 4.00
​Color: Yellow
​Important Notes from the Lab
​Authentication: The lab identifies the specimen as a “Natural Yellow Sapphire.”
​Limitations: A significant disclaimer at the bottom states: “Origin & enhancement not checked for the above specimen.” This means the lab has not verified where the stone was mined or if it has undergone common treatments like heat enhancement to improve its color or clarity.
​Verification: The certificate includes a QR code and a lab stamp for authenticity verification.