Take the guild jade certificate as an example. Whether it is a small gem below 1 carat or an emerald above 1 carat, you can pass the inspection and identification, even know the color grade, purity grade, origin and trade name of the emerald in your hand, and explain Wharton Green, oil drop effect and small origin in detail.

Information on the left side of the certificate: certificate number, report number? Each certificate has a unique number, which can be used to query e-certificates.

date of issue

Testing items? Articles? Describe the quantity and appearance of the detected items (bare stones, rings, necklaces, etc.). )

Species category? The family to which the gem belongs.

All kinds of gems? Is the gem natural or synthetic? There will be the word "natural" in front of natural gemstones and the word "synthetic" in front of synthetic gemstones.

Weight. The weight is in carat, 1 carat = 0.2g.. For jewelry, add * after ct, and note "* indicated by hallmark/ customer" in the remarks.

Size? If the mosaic size cannot be accurately measured, an approximate value will be added.

Cut? Bright surface (bright surface cutting), step (step cutting), improved bright surface (improved bright surface cutting), convex circle (curved surface cutting), other (other) ***5 kinds.

Shape. Shape? Oval, Cushion, circle, Pear (water drop), Marquise (horse eye), Heart, Square (square), Kite, Octagonal (octagonal), Other (Other) * * * 6544.

Color grading. Color grading? In the neutral environment of science, emeralds are divided into light, medium, dark, bright, green and dark.

Comments? Explain whether the GEM has been optimized.

Emerald color gradient-light

-medium.

-Nervous.

-Bright, including green.

-Deep

Emerald origin gold can issue emeralds from Colombia, Zambia, Brazil, Afghanistan, Ethiopia, India and other places.

Guild Gem Laboratory has launched a new emerald service project: Colombia small origin identification service.

If the small producing areas in Colombia are identified, the report will indicate the names of the mining areas in the column of producing areas: Chivor) (Chivor and Gachala.

If the origin is Muzuo and the color is Wharton Green, it will appear in the comments: * For special comments, please refer to the appendix. This gem presents a classic green color related to Muzo in Colombia. For more information, this stone shows the typical high-quality green in Muzo mining area, Colombia.

Emerald clarity improvement review-no sign? Improve clarity

There is no indication of the best treatment for cleaning.

-What signs? Doesn't matter? Clarity enhancement

Very slight signs of cleanliness optimization treatment

-What signs? Underage? Clarity enhancement

Indications of light clarity optimization therapy

-What signs? Mild to moderate? Clarity enhancement

Signs of optimal treatment with mild to moderate cleanliness

-What signs? Moderate? Clarity enhancement

Moderate signs of optimal handling of cleanliness.

-What signs? Significantly? Clarity enhancement

Remarkable sign of cleanliness optimization treatment

Information on the right side of the certificate: Wharton green, vitality-luster, origin, oil drop effect and other information are marked below the photo on the homepage of the emerald report, which is concise and clear.

New Emerald Report Example

Attached pages explain Wharton green, oil drop effect, vitality-luster, small producing areas and so on.

Attached are new jadeite report samples (describing Wharton green, oil drop effect, brightness and origin)

0 1? Wharton Green Wharton Green is GUILD's highest evaluation of emerald color, which refers to colors with high saturation and lightness, representing fresh and bright green. In the emerald report, Wharton Green is classified as bright green *, and the trade name Verdant Green (trade name: Wharton Green) is marked at the bottom of the photo.

The attached page of the report will explain Wharton Green in the form of words and charts.

Explanation of the new edition of Wharton Green with attached pages

02? Colored gems with good cut, clarity and crystal quality will be evaluated by the guild.

What exactly does vibrant brilliance mean?

The factors affecting the quality of colored gems include color, producing area and optimized treatment. In addition to the above points, transparency, clarity, cutting and the quality of the crystal itself are equally important.

There is a relatively perfect appraisal and grading system for the color grade, the best treatment method and the origin of colored gems. In order to evaluate the quality of gemstones more comprehensively and provide consumers with more accurate quality judgment basis, GUILD Laboratory launched Vibrant-Brilliance quality rating.

Guild vitality-brilliant report example

Vibrant luster means that a gem has proper cutting, high transparency and clarity. Proper cutting, high clarity and transparency can ensure that the light entering the gem is captured by human eyes as much as possible, thus showing vivid and smart colors.

The left is the "light leakage" caused by cutting, and the right is the vibrant brightness.

Vibrant-Brilliance is an independent rating item in colored gems, which has nothing to do with other evaluation items (gem type, color, trade name, optimization treatment, etc.). ). As long as the gem reaches Vibrant-Brilliance, the Guild Gemological Laboratory will give it Vibrant-Brilliance evaluation.

Gems evaluated by Vibrant-Brilliance are not only marked on the front page of the report, but also described in detail in the attached page of the report.

The explanation of vitality-brilliance in the attached page of the new report.

Oil drop effect Oil drop effect or butterfly effect is a rare special effect in emeralds, which is usually found in top emeralds in Colombia. From the appearance, the oil drop effect gives emerald a velvet texture.

Emerald with oil drop effect is expressed in Spanish Gota de Aceite(Mariposa) and translated into oil drop effect (butterfly effect). The formation principle of oil drop effect is explained in the attached page of the report. The oil drop effect is formed by the columnar structure of microcrystals in emeralds. And with a microscopic schematic diagram, the mystery of oil drop effect is unveiled for consumers in a simple way.

Explain the oil drop effect in the appendix of the new report.

Small producing areas For emeralds, the small producing areas that the guild can issue at present are Colombia (Muzo), Colombia (Chival), Colombia (Gogalla), Pakistan (Swat) and Afghanistan (Panjshir).

The upgraded report of small producing areas will be attached with a report page, which will introduce the geographical location, history and characteristics of gems in each small producing area in detail.

The explanation of the origin (wood) of small emerald in the attached page of the new report.