Loading..

Product was successfully added to your shopping cart.





compare star-active star-inactive

No products in the cart.

Gemstone Sheet

GEMSTONE

NATURAL/
ENHANCEMENT

PREVaLENCE

PURPOSE

STABILITY

IDENTIFICATION

CARE & CLEANING

Abalone

Natural (N)

 

 

 

 

Basic care required

Agate

Natural (N) e.g. dendritic agate

 

 

 

 

 

Dyeing (D) e.g. pink agate

Frequent

To improve or introduce color

Good

Detectable by a qualified Gemmologist without any special equipment

Require basic care only, see more details on jewelry care

Alexandrite

Natural (N)

 

 

 

 

 

Amber

Heating (H)

Frequent

To enhance color and create sun shine

Good

Detectable by a qualified Gemmologist without any special equipment

Require basic care only, see more detailed information on jewelry care

Amethyst

Natural (N)

Occasionally

 

 

 

 

Heated (H) e.g. Brazilian amethyst

Frequent

To improve color

Brilliant

Cannot be detected

Basic care required, see more detailed information on jewelry care

Ametrine

Natural (N)

 

 

 

Cannot be detected

Basic care required, see more detailed information on jewelry care

Ammolite

Assembled (A)

Regular

To guard the thin sheet of Ammolite

Brilliant

Detectable by a qualified Gemmologist without using any special equipment

Basic care required, see more detailed information on jewelry care

Andesine

Diffused (U)

Frequent

To breed color

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Apatite

Natural (N) e.g. Green Apatites

 

 

 

 

As apatite has a low hardness rating (5 Mohs) so wear the stone carefully

Heated (H) e.g. Blue Apatites

Regular

To improve color

Good

Detectable only with sophisticated equipments; Internationally accredited laboratory tests reveal the enhancement

As apatite has a low hardness rating (5 Mohs) so wear the stone carefully

Aquamarine

Heated (H)

Regular

To improve the purity of blue color by removing yellow and green overtones

Very good

Cannot be detected

Basic care required, see more detailed information on jewelry care

Chalcedony

Dyeing(D)

Frequent

To produce a range of unusual colors

Good

Detectable by a qualified Gemmologist without using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Charoite

Natural (N)

 

 

 

 

 

Impregnation (I)

Frequent

To improve luster

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Citrine

Natural (N), e.g. Madeira Citrine

 

 

 

 

 

Heated (H)

Regular

To turn Amethyst into Citrine

Brilliant

Cannot be detected

Basic care required, see more detailed information on jewelry care

Danburite

Natural (N)

 

 

 

 

 

Diamonds (White)

Natural (N)

Regular

 

 

 

Basic care required, see more detailed information on jewelry care

Diamonds (Cognac, Brown or Champagne)

Natural (N)

Regular

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H)

Rarely

To improve color

Brilliant

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Diamonds (Red, Black, Green, Yellow, Blue)

Irradiated (IR)

Regular

To improve color

Very good

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Diaspore

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Diopside

Natural (N) including Star Diopside

 

 

 

 

Basic care required, see more detailed information on jewelry care

Emerald

Natural (N)

Rare

 

 

 

 

Oiled (O)

Regular

To improve the transparency and shine

Reasonable

Detectable by a qualified Gemmologist without using sophisticated equipment

Can easily be re-oiled by customer. Avoid ultrasonic cleaners

Filling (F)

Frequent

To enhance transparency and shine

Reasonable

Detectable by a qualified Gemmologist without using sophisticated equipment

May need professionally re-treating often. Avoid ultrasonic cleaners

Fluorite

Natural (N)

 

 

 

 

As fluorite is low on the hardness scale (4 Mohs) careful handling is must

Irradiation (IR)

Frequent

To improve color

Good

Detectable only with sophisticated equipments in an internationally accredited laboratory

As fluorite is low on the hardness scale (4 Mohs) careful handling is must

Garnet

Natural (N), all garnets except demantoid

 

 

 

 

Basic care required, see more detailed information on jewelry care

Heating (H) only demantoid and very low heat

Rarely

To enhance color

Brilliant

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Goshenite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Heliodor

Irradiated (IR)

Frequent

To alter color

Good

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Howlite

Dyeing(D)

Rarely

To alter color

Good

Detectable by a qualified Gemmologist without using any special equipment

Basic care required, see more detailed information on jewelry care

Impregnated (I)

Frequent

To improve luster

Good

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Iolite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Kunzite

Irradiation (IR)

Regular

To improve color

Reasonable

Detectable only with sophisticated equipments in an internationally accredited laboratory

Avoid exposure to strong light and high heat

Kyanite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Labradorite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Lapis Lazuli

Dyeing (D)

Frequent

To improve color and remove white calcite inclusions

Very Good

Detectable by a qualified Gemmologist without any special equipment

Basic care required, see more detailed information on jewelry care

Malachite

Impregnated (I)

Frequent

To improve luster

Very Good

Detectable by a qualified Gemmologist without any special equipment

Basic care required, see more detailed information on jewelry care

Moldavite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Moonstone

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Morganite

Heating (H)

Frequent

To wash out orange colors, and produce a purer pink color

Very good

Detectable only with sophisticated equipments in an internationally accredited laboratory

Avoid extreme temperature and sudden temperature change

Mother of Pearl

Dyeing (D)

Frequent

To modify color

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Bleaching (B)

Rare

To take out color

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Opal

Natural (N) e.g. Welo opal and Australian opal

Frequent

 

 

 

Avoid heat as it can evaporate moisture retained inside opal resulting in it being porous

Smoking e.g, black opals

Rare, only black opals

To create dark background color and enhance play of color

Reasonable

Detectable by a qualified Gemmologist using sophisticated equipment

Avoid heat as it can evaporate moisture retained inside opal resulting in it being porous

Paua Shell

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Cultured Pearl

Bleaching (B)

Regular

To remove color and produce a purer white color

Very good

Cannot be detected but assumed treatment has taken place

 

Dyeing(D), any other color than white

Frequent

To produce colors

Very good

Detectable by a qualified Gemmologist using sophisticated equipment

 

Peridot

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Petalite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Quartz

Natural (N), white quartz and rutile quartz

Frequent

 

 

 

Basic care required, see more detailed information on jewelry care

Coating (C), mystic quartz

Rarely

To produce color

Reasonable

Detectable by a qualified Gemmologist without any special equipment

Avoid scratching the pavilion as the coating can scratch

Irradiated (IR) e.g, Smoky Quartz and Blueberry Quartz

Rarely

To enhance color

Good

Cannot be detected

Basic care required, see more detailed information on jewelry care

Dyeing(D), Blue Quartz

Rare

To produce color, must be quench crackled first to produce fractures

Good

Detectable by a qualified Gemmologist any special equipment

Basic care required, see more detailed information on jewelry care

Heated (H)

Frequent

To enhance color

Very Good

Cannot be detected

Basic care required, see more detailed information on jewelry care

Rhodocrosite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Ruby

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H)

Regular

To enhance color

Very Good

Detectable by a qualified Gemmologist without any special equipment

Basic care required, see more detailed information on jewelry care

Diffused (U)

Frequent

To enhance color

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Filled (F)

Frequent

To improve transparency and shade

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Sapphire

Natural (N)

Rare

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H)

Regular

To enhance color

Very Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Diffused (U) with beryllium

Frequent

To enhance color

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Filled (F)

Rare

To improve color and transparency

Good

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Dyeing(D)

Rare

To enhance color

Reasonable

Detectable by a qualified Gemmologist using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Scapolite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Sillimanite

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Snowflake Obsidian

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Sodalite

Natural (N)

Frequent

 

 

 

Basic care required, see more detailed information on jewelry care

Dyeing(D)

Rarely

To enhance color

Very Good

Detectable by a qualified Gemmologist using sophisticated equipment

Avoid ultrasonic cleaners and steam cleaners as dye fades in addition to basic jewelry care

Sphene

Natural (N)

 

 

 

 

 

Heated (H)

Rare

To create a red or orange color

Good

Detectable by a qualified Gemmology using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Spinel

Natural (N)

 

 

 

 

 

Heated (H)

Rare

To improve color and transparency

Brilliant

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Sunstone

Natural (N)

 

 

 

 

Basic care required, see more detailed information on jewelry care

Tanzanite

Heated (H)

Regular

To enhance color

Brilliant

Cannot be detected but it is assumed due to commonness

Basic care required, see more detailed information on jewelry care

Topaz

Natural (N) e.g. Imperial Topaz and White Topaz

Rarely

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H)

Rare

To enhance color

Brilliant

Cannot be detected

Basic care required, see more detailed information on jewelry care

Irradiated (IR) e.g. Blue Topaz

Frequent

To enhance color

Brilliant

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Coating (C) e.g. Mystic Topaz

Frequent

To produce color in colorless topaz

Reasonable

Detectable by a qualified Gemmologist without using sophisticated equipment

Avoid contact with sharp edges as they may scratch it and remove the coating

 

Frequent

To produce color in colorless topaz

Very good

Detectable only with sophisticated equipments in an internationally accredited laboratory

Basic care required, see more detailed information on jewelry care

Tourmaline

Natural (N) e.g. Chrome Tourmaline

 

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H) e.g. Green Tourmaline

Frequent

To boost color

Very good

Cannot be detected

Basic care required, see more detailed information on jewelry care

Irradiated (IR) e.g. Red, Pink, Purple Tourmaline

Rarely

To augment color

 

Cannot be detected

Basic care required, see more detailed information on jewelry care

Turquoise

Impregnated (I)

Frequent

To enhance luster

Good

Detectable by a qualified Gemmologist without any special equipment

Basic care required, see more detailed information on jewelry care

Reconstructed (R)

Rare

To produce gem-quality stones to set in jewelry

Very Good

Detectable by a qualified Gemmologist without using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Dyeing(D)

Rare

To produce unusual colors, other than the natural blue

Good

Detectable by a qualified Gemmologist without using sophisticated equipment

Basic care required, see more detailed information on jewelry care

Zircon

Natural (N) e.g. green and brown Zircons

 

 

 

 

Basic care required, see more detailed information on jewelry care

Heated (H) e.g. red, blue and colorless Zircons

Regular

To produce and improve colors

Very Good

Cannot be detected but it is assumed due to commonness

Basic care required, see more detailed information on jewelry care