Color Grading of Diamonds-Dr Shihaan’s Guide

Introduction to Colored Diamonds and Color Grading of Diamonds The color grading of diamonds is one of the important 4 c’s that forms the basic foundation for diamond grading and evaluation. Here, when we talk of diamond color grading we are referring to the color grading of white and yellow diamonds and not color grading […]

Carat Weight of a Diamond/Gemstone-Dr Shihaan’s Guide

The 4c’s which describes the physical properties or characteristics of a diamond and therefore its value are carat weight, cut, clarity and color. Understanding the 4c’s forms the basic foundation for diamond grading and evaluation. The most valuable diamond is the diamond that possess the best measurement in all the important parameters, which include carat […]

Dr Shihaan’s Guide to buying Diamonds and Jewelry

Welcome to the section on “Guide to Buying Diamonds and Jewelry by Dr Shihaan”. This section of our popular website is targetted at the consumers of diamonds and jewelry. Before one purchases an expensive item and a potential investement such as diamonds, it is recommended that one should educate themself briefly about the item. What […]

History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 1

Pearls are Organic Gemstones Perfected by Nature and Possessing Unique Optical Properties that Cannot be Replicated by Human Intervention Pearls are organic gems produced by Mollusks such as bivalves (oysters, mussels, clams, scallops etc.) and gastropods (sea snails like melo melo sea snail, queen conch, horse conch, abalone sea snail etc), considered as gifts of […]

History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 2

History of the Persian Gulf pearl fishery from 7th-century A.D. to modern times. This webpage is a continuation of the History of the Persian Gulf pearl fishery after the Islamic conquest of Persia in the 7th-century A.D. to modern times This webpage is a continuation of the previous webpage, “History of the Discovery and Appreciation […]

History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 3

An assessment of the Gulf of Mannar region as another possible region where the discovery and appreciation of pearls first began The Gulf of Mannar between India and Sri Lanka is another very ancient source of pearls, and pre-historic people living in the southern coast of India and the northwestern coast of Sri Lanka might […]

History of the Discovery and Appreciation of Pearls- The Organic Gem Perfected by Nature- Page 4

History of the Gulf of Mannar pearl fishery from 7th-century A.D. to modern times This webpage is a continuation of the previous webpage, “History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 3” – dedicated to the history of the pearl fishery of the Gulf of Mannar, […]

History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 5

History of the Gulf of Mannar pearl fishery on the Indian side of the Gulf from 7th-century A.D. to modern times. This webpage is a continuation of the History of the Gulf of Mannar pearl fishery from the Indian side of the Gulf This webpage is a continuation of the previous webpage, “History of the […]

History of the Discovery and Appreciation of Pearls – the Organic Gem Perfected by Nature – Page 6

History of the spread of the knowledge of the value and appreciation of pearls from the Persian Gulf region to countries of the west, initially to Greece and Rome, and subsequently to other western nations in the medieval period Pearls were undoubtedly first discovered and appreciated in the Persian Gulf region, and the knowledge of […]

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