The document provides detailed information on various natural gemstones including their color, origin, chemical composition, and common cuts. Key gemstones mentioned include amethyst, citrine, garnet, sapphire, topaz, peridot, iolite, and rhodolite garnet, alongside their unique characteristics. Each gemstone's features, such as color variations and sources, are outlined to assist in understanding their properties and market relevance.

1. gemsngems.com
info@gemsngems.com
Natural Gemstones
PH: 66615621162

2. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural African Amethyst AAA
COLOR: Natural African Amethyst is purple gem from light purple to intense
royal purple mauve and violet.
ORIGIN: The large deposits of amethyst were discovered in Brazil in the 19th
century. Today the finest amethyst comes from Zambia in Africa.
CHEMICAL COMPOSITION: Amethyst is a macro crystalline variety of Quartz
with the chemical formula SiO2 (Silicon Dioxide). Experts attribute the purple
colour of amethyst to small amounts of Iron Oxide (Fe2O3) impurities
(approximately 40 parts per million) at specific sites in the crystal structure of
quartz.

3. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Brazilian Amethyst AAA
COLOR: Natural Brazilian Amethyst is LIGHT purple with no visible colour
zoning.
ORIGIN: Brazil, Uruguay
CHEMICAL COMPOSITION: Amethyst is a macro crystalline variety of
Quartz with the chemical formula SiO2 (Silicon Dioxide). Experts attribute
the purple colour of amethyst to small amounts of Iron Oxide (Fe2O3)
impurities (approximately 40 parts per million) at specific sites in the crystal
structure of quartz.

4. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Citrine AAA
COLOR: Natural Citrine is yellow to golden­orange gemstone
CHEMICAL COMPOSITION: SiO2 (silicon dioxide)
CUT: Round brilliants and ovals are most common. Step cuts (emerald
cuts) and other fancy cuts, such as scissor­cuts or Portuguese­cuts are
also quite popular. Citrine gemstones can be found in just about every
shape imaginable, including pears, squares, trillions, rounds, ovals,
cushions and heart shapes.

5. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Mozambique Garnet
Garnet is not a single mineral, but describes a group of several closely
related minerals. Garnets come in a variety of colors and have many
different varieties. However, the most widely­known color of Garnet
gemstones is dark red.
COLOR: Natural Mozambique Garnet is deep red with hints of orange
and brown, reminds us of an autumn harvest or Indian summer.

6. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Blue Star Sapphire
COLOR: It has a nice Blue Colour.
ORIGIN: Myanmar
CHEMICAL COMPOSITION: Al2O3 Corundum (Aluminium Oxide)
CUT: Oval Cabochan. Top Quality
SPECIFIC GRAVITY: 3.95­4.03
REFRACTIVE INDEX: 1.762­1.788
HARDNESS: 9(Hardest after Diamond)

7. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural White Topaz
White topaz, a transparent semiprecious stone, has often been
mistaken for a diamond because of the similarities in clarity between
the two stones and because both gems are hard, although topaz stones
are not quite as durable as diamonds
COLOR: Natural white Topaz, as the name suggests has a clear colour.
ORIGIN: Deposits of topaz have been found in Brazil, Afghanistan,
Australia, Myanmar (Burma), China, Germany, Japan, Madagascar,
Mexico, Namibia, Nigeria, Pakistan, Russia, Zimbabwe, Sri Lanka,
Ukraine and the USA.

8. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Smoky Quartz
Smoky topaz is another name given to smoky quartz. Smoky topaz is
made of silicon dioxide.
Smoky topaz resembles clear quartz in every manner except color. As
the name suggests, smoky topaz has a smokiness to it. Shades can
range from light tan to dark chocolate, although the stone is somewhat
transparent

9. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural London Blue Topaz
Real London Blue Topaz – Genuine London Blue Topaz – Natural
London Blue Topaz
COLOR: London blue topaz is a medium to dark greyish blue,
sometimes described as “steely” or “inky”.
ORIGIN: Brazil, Afghanistan, Australia, Myanmar (Burma), China,
Germany, Japan, Madagascar, Mexico, Namibia, Nigeria, Pakistan,
Russia, Zimbabwe, Sri Lanka, Ukraine and the USA.

10. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Swiss Blue Topaz
Swiss Blue Topaz – Genuine Swiss Blue Topaz – Natural Swiss Blue
Topaz
COLOR: Natural Swiss Blue Topaz is cool blue color.
ORIGIN: Germany, Siberia and Brazil
CHEMICAL COMPOSITION: Al2SiO4 (F,OH)2 (aluminum, hydroxyl­
flourine silicate)
CUT: Round, Oval, Pear, Square, Emerald, Marquise, Trillion, Heart
SPECIFIC GRAVITY: 2.64 – 2.65

11. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Swiss Blue Topaz
Swiss Blue Topaz – Genuine Swiss Blue Topaz – Natural Swiss Blue
Topaz
COLOR: Natural Swiss Blue Topaz is cool blue color.
ORIGIN: Germany, Siberia and Brazil
CHEMICAL COMPOSITION: Al2SiO4 (F,OH)2 (aluminum, hydroxyl­
flourine silicate)
CUT: Round, Oval, Pear, Square, Emerald, Marquise, Trillion, Heart
SPECIFIC GRAVITY: 2.64 – 2.65

12. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Peridot
COLOR: Natural Peridot is oldest gemstone available in lovely Olive
Green colour with slight hint of gold.
ORIGIN: Very fine specimens come from Burma, and new material
from Pakistan has generated considerable excitement in the gemstone
world. Arizona and New Mexico in the USA are important producers of
commercial grade Peridot. Additionally, Vietnam and China have
become increasingly important suppliers.

13. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Iolite
COLOR: Varies in color from sapphire­blue to dark blue­violet and
yellowish­gray to light blue, depending on the angle of light. Iolite does
not need to be subjected to treatments to improve their appearance.
ORIGIN: India, Sri Lanka, Mozambique, Zimbabwe, and Brazil.
CHEMICAL COMPOSITION: Mg2Al4Si5O18 (Magnesium Aluminium
Silicate)
CUT: Round, Oval, Pear, Square, Emerald, Marquise, Trillion, Heart,
Baguette, Oval Cabochan, Round Cabochan

14. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Green Amethyst (Prasiolite)
COLOR: Green Amethyst has pale green colour.
ORIGIN: Brazil, USA
CHEMICAL COMPOSITION: SiO2(silicon dioxide)
CUT: Round, Oval, Pear, Square, Emerald, Marquise, Trillion, Heart
SPECIFIC GRAVITY: 3.49 – 3.57
REFRACTIVE INDEX: 1.543–1.553

15. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Rhodolite Garnet
Rhodolite has quickly grown into a standard jewelry gemstone. It has
an attractive color, and is often very clean being without any flaws and
inclusions
COLOR: Natural Rhodolite Garnet describes a rose­red form of Garnet
that has a lighter tone and more purplish color than typical Garnet
gemstones. It is usually an intermediary variety between the Pyrope
and Almandine series, usually containing more magnesium than iron
in its chemical structure, thus leaning closer towards Pyrope. It is
often regarded as a variety of Pyrope

16. gemsngems.com
info@gemsngems.comPH: 66615621162
Natural Red Garnet
COLOR: Natural Red Garnet is Dark­red. It is a very strong color – the
color of fire and blood.
ORIGIN: Brazil, India, Madagascar, Sri Lanka and the USA. Smaller
deposits exist in Austria and the Czech Republic.
CHEMICAL COMPOSITION: Fe3Al2 (SiO4)3 (Iron aluminium
silicate)
CUT: Round, Baguette, Oval, Pear, Square, Emerald, Marquise,
Trillion, Heart
SPECIFIC GRAVITY: 3.6­4.3
REFRACTIVE INDEX: 1.714 – 1.888

17. gemsngems.com
info@gemsngems.comPH: 66615621162
CONTACT US
Gems N Gems
Bangkok, Thailand
Skype: samgemsngems
Email info@gemsngems.com