This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

XMAS DELIVERY PLACE ALL ORDERS BEFORE NOVEMBER 11TH

Guides

Ntinga London offers a wealth of information to help you navigate the jewellery trade. Whether you are a beginner or a seasoned professional, we have something for you

Gemstone Guide: Tourmaline

Gemstone Guide: Tourmaline

Source: Brazil, Kenya, Madagascar, Mozambique, Pakistan, Tanzania, Zambia, United States. Mineral: Tourmaline Hardness: 7-7.5 Colour: all colours including bi-colour, watermelon tourmaline slices, green tourmaline and rubellite. Clarity; Inclusions in tourmaline...

Read more
Gemstone Guide: Opal

Gemstone Guide: Opal

Source: Australia, Brazil, Ethiopia, Mexico, Peru and United States. Mineral: Hydrated silica. Hardness: 5-6.5 Colour: Varying colour Clarity: They can range from completely transparent to opaque. Some opals can have...

Read more
Gemstone Guide: Morganite

Gemstone Guide: Morganite

Source: USA, Colombia, Brazil, Mozambique, Madagascar. Mineral: Beryl Hardness: 7.5-8 Colour: Pink, peach or orange. Clarity: Very few inclusions, clean to the eye. Treatment: Most are natural, some orange ones...

Read more
Gemstone Guide: Tanzanite

Gemstone Guide: Tanzanite

Source: Tanzania Mineral: Zoisite Hardness: 6-7 Colour: Blue to bluish purple (post heat treatment) and green.  Treatments: Most Tanzanites are heat treated to transform the brown Zoisite into the blue...

Read more
Gemstone Guide: Topaz

Gemstone Guide: Topaz

Source: Brazil, Russia, Pakistan and Sri Lanka Mineral: Topaz Hardness: 8 Colour: Yellow, orange, brown, pink to red, purple, blue, green and colourless. Clarity: Blue topaz has the least inclusions...

Read more
Gemstone Guide: Sapphire

Gemstone Guide: Sapphire

Sources: Australia, Cambodia, China, Ethiopia, Kenya, Madagascar, Sri Lanka, Tanzania Mineral: Corundum Hardness: 9 Colour: Every colour apart from red Clarity: They usually have inclusions. This is a property of...

Read more
Gemstone Guide: Ruby

Gemstone Guide: Ruby

Source: Kenya, Madagascar, Sri Lanka, Pakistan, Tanzania, Thailand Mineral: Corundum Hardness: 9 Colour: Vibrant red to slight purple red Clarity: Inclusions are visible in most rubies, the less inclusions the...

Read more
Gemstone Guide: Paraiba

Gemstone Guide: Paraiba

Source: Afghanistan, Brazil, East Africa, Nigeria, Mozambique, Madagascar, U.S.A Mineral: Tourmaline Hardness: 7-7.5 Colour: Neon blue, green blue and mint green Clarity: Most have natural inclusions Treatment: The copper element...

Read more
Gemstone Guide: Aquamarine

Gemstone Guide: Aquamarine

Source: Brazil, Pakistan, U.S.A, Uruguay and Zambia Mineral: Beryl Hardness: 7.5-8 Colour: Greenish blue Clarity: The best quality are eye-clean, transparent gems. Some carry inclusions of long, hollow rods which...

Read more
Gemstone Care Guide

Gemstone Care Guide

From diamonds to emeralds, sapphires to rubies, our comprehensive guide will empower you with expert tips on cleaning, storing, and protecting your gemstones for generations to come. Unleash the full...

Read more

Cart

No more products available for purchase