Diamond Report

Php 4000 Gemcamp Laboratories Group, 88, Capitol Hills Dr., Quezon City, Metro Manila, Philippines

Our professional GIA graduate gemologist will issue you a printed official lab report from the Gemcamp Laboratory, encompassing the 4C's of diamond quality, as well as important information regarding your precious gemstone

  • Access to a G.I.A., G.G. for gemological support questions
  • Batch or sample grading for melee sizes available upon request
  • State-of-the-art laboratory instruments imported from the U.S. and Germany
  • Verbal delivery of identification results (no printed report) will cost 2,000 Php only
    View Our Office Hours & Schedule
  • The laboratory is open from 9am to 6pm on weekdays.
  • Holiday sessions can be scheduled, given special arrangements.
  • Weekend appointments can be made, provided we are given a 3-day lead time.

"Diamonds are not only beautiful additions to your gala wear, they serve as high-value assets and storage carriers of your wealth. Each of these precious assets must be carefully hand-selected and well-documented, so it's always a good idea to obtain knowledge about the specifics of your investment."

Loose diamond color compared to diamond ring at our Philippine gem lab

Diamond Grading Regulations

The Gemcamp Laboratory strictly follows the internationally accepted grading system devised formally by the Gemological Institute of America. Each individual gem undergoes a precision-based examination of the four common quality factors, namely: color, clarity, cut and carat weight, which are known worldwide as the four C's of diamond grading. It should be noted that every aspect of your diamond will be observed, measured and graded before our gemologists do a cumulative evaluation of quality.

A detail-oriented report to give you piece of mind about your most valuable purchases.


We help you understand and evaluate your diamond assets using a combination of gemological expertise, scientific instrumentation and trade knowledge. 

Inquire today about submitting a stone to the lab.

Brown solitaire diamond set in white gold ring with Pave accent stones
Philippine Gemcamp laboratory gemologists showcase a heart shaped diamond

What Makes Your Own Diamond Truly Valuable?


Diamonds hold a very special place in the hearts of most romantics. For several centuries now, they've uniquely told tales of timeless commitment, and unconquerable bonds.

Find out why this spectacle of nature commands such admiration from the world markets. Have a chat with one of our GIA graduate gemologists about your stone.

A pair of yellowish diamond macle crystals as uncut specimens from our gemologist

Diamond Color Grade

Does a gem have trace amounts of color visible?

Most diamonds used in the jewelry industry today can be ranked using the D-Z color scale, which ranges from colorless to very light yellow.

Gem microscope in first person view, used by our Gemcamp gemological director

Gemstone Clarity Level

How much inclusions and blemishes are present?

Aside from setting the clarity grade, inclusions and blemishes are like a diamond's unique footprint. They are often used for re-identification as well.

Marquise and Pear Shaped Diamond Necklace Suite of Fine Philippine Jewelry.

Quality Mark of Cutting

Are the stone's measurements proportional?

A properly cut diamond reflects light back to the human eye in an appealing pattern, promoting brightness, fire and scintillation.

Gemological tools used by Gemcamp certified gemologists at our Philippine laboratory in Quezon City by GEMCAMP STAFF
Let's Take a Look at the Four C's

Color, clarity, cut and carat weight, all give a corresponding influence to the valuation of gem-quality diamond.

For most gemstones that aren't diamond, color is usually the primary governing quality factor considered, however for this case, it is the absence of color that often stimulates higher value margins.

Each of the 4 C's can heighten a diamond's price significantly when present in the exceptional grade levels, however if the other quality factors are poor, a diamond may still suffer lower estimates. Computing for a diamond's price requires a wholesome evaluation of all the 4C's, rather than just looking at one aspect of quality individually.

A Diamond Grader's Understanding of the Four C's

First off, let's discuss about color, since it's one of the most highly popular aspects considered when buying a diamond. Modern practices for grading diamond color refer back to the 'standard' grading system originally devised by the Gemological Institute of America in the 1950's. This scale has been improved upon since that time by the institute itself and influences from the trade. The scale starts at the letter 'D', referring to diamonds with no coloration at all. A strong premium exists for D colored stones, due to a high-end demand for what many connoisseurs believe as 'the perfect diamond'. Categorically speaking however, the system ranks D, E and F colors under the 'colorless' classification. These top grades are then followed by G,H,I and J colors, which are classified as 'near-colorless'. Many markets seek out this range of color due to their beautiful appearance and slightly more affordable rates. Some consider grades above J to be prime investment grade colors, due to their marketability to high end consumers. A next step down would bring us to the grades of K,L and M, classified as faint yellow or faint brown. Much of these stones would show an indicative hint of color to the naked eye, but their lower prices can often times make up for this.

The scale actually goes all the way down to the Z grade. Letters N to R are classified as very light yellow (or brown), and grades of S to Z are classified as light yellow to brown. Many stones that belong to these levels are also very popular due to a more commercially priced availability. Any gem with more color than a Z grade diamond will automatically be judged as a 'fancy colored diamond', and will be graded along a different color scale entirely (where more color present is more desirable). The basis for considering a diamond's color is centered on a gemologist's knowledge of the scale, along with a set of 'master stones' that were specifically calibrated for use as grading tools.

Now let's mention a little bit about clarity, which is one of the more noticeable quality aspects, especially in the lower grades. Different inclusions within a diamond can lower its visual appeal, and possibly cause durability issues for the stone. This is why clarity plays a big role in the appraisal of many gemstones, and the top grades of 'Flawless' and 'Internally Flawless' command such high premiums in the current market. The only difference between these two grades, is the fact that 'IF' diamonds may have minor blemishes (surface related characteristics like scratches), while 'F' diamonds will not possess such characteristics. Though despite this, both grades are free of any visible inclusions at 10 times magnification.

Below these grades, we have the VVS (very very slightly included) stones, divided into the two sub-categories of VVS1 and VVS2. The inclusions that are present in these stones are usually minute, and quite difficult for a trained gemologist to find under a 10x magnified view.

Next, we have the VS (very slightly included) stones, also divided into two sub-categories. These gems have inclusions that can be described as 'minor' and range from difficult to somewhat easy for a trained grader to see at 10 times magnification. The inclusions for all grades are also judged by their size, position, relief (visibility), number, and nature (durability issues).

After the VS stones, we have the SI graded diamonds. SI stands for slightly included, and the trade often divides this clarity category into either two or three sub-categories. Such gemstones that belong to this range normally have inclusions that are noticeable to viewers using 10x magnification. There are also stones that will possess eye-visible inclusions, but this is not always the case.

Moving on, let us delve into the topic of cut grading. Many diamonds with excellent grades for cut, polish and symmetry can command a higher premium than the average gemstone. The full range for cut grading begins at the top with a grade of 'Ex', followed in sequence by the grades VG, G, F, and P. Experienced graders take into consideration the angles and proportions of a diamond, as well as its visual display of brightness, fire and scintillation. The issue of cut is very important because when a diamond is not properly faceted, light does not interact with it in the proper manner. Dark spots can appear due to light leakage, or a stone may sometimes appear as watery or grayish due to unwanted reflections. Some poorly cut stones might even look mishapen or assymetrical to the eye. Most of these are fashioned that way by the cutter, because he or she wanted to remove a large or prominent inclusion. Decisions like this prioritize clarity over cut grade, and can sometimes be economically logical.

Last but not least, the most obvious quality factor of a gem-quality diamond is its carat weight. Now, some hear the word carat, and mistakenly associate it with 'karat'. The latter refers to gold purity, like when a gold ring is 18 karats, this means that it's composition is 18/24 gold and 6/24 metal alloy. For diamond terminology, 'carat' is spelled with a 'c' and refers to a gemstone's weight. One carat is equal to 1/5th of a gram, and many gems are actually priced 'per carat' instead of 'per piece' on the open market. There are many who would link the word 'carat' to the idea of a certain stone size, and while this concept does have a good basis, a diamond's measurements are also dependent on its cut grade and cutting style. It's entirely possible to have two one carat stones that do not measure at the same width or length when viewed face up.

With the topic of carat weight also comes the discussion of 'magic sizes'. These are the popular weight designations that hold a high demand in the trade, namely the half carat, one carat, two carat, five carat and ten carat sizes among others. Now, the pricing for a diamond will jump sporadically when a stone's weight hits a 'magic size'. One example would be to compare a 0.93ct stone with a 0.95ct stone and a 1.00ct stone. A noticeable difference would be seen in the way a vendor prices the 1.00ct stone due to its widespread demand and popularity. These magic sizes also entail that any size slightly below their designations might be priced more affordably as well. It all really depends on your point of view in the end.

Diamonds are mainly valued by how high they rank when evaluated for the 4C's, but sometimes other influences might also come into play. Some stones with strong fluorescence might have their value affected, due to the fact that fluorescence can visually mask or heighten color (despite a grade assignment).

Other exceptional stones might also come with a provenance document, describing a famous history of owners or a popular mining source where the rough gem originally came from. Things like these are usually only seen accompanying larger stones at auction, and can also add to the final value of an item.

Never forget that the value of a diamond is also set by the sentiment and symbolism it holds in the story of someone's life. We can count each dollar or budget every price point, but in the end the greatest value that a diamond may bring is the smile of someone you love, and the unspoken promise of a happily ever after.

Our commitment to excellence

Our diamond reports cover the entire scope of the 4C's, as well as other value-influencing properties like fluorescence. We will always evaluate your diamonds to the best of our intellectual and instrumental capabilities based on gemological principles accepted by the worldwide diamond trade.

  • Every Report will be logged and documented by Gemcamp in case of the need for re-validation services.
  • Batch grading or the sample grading of parcels can be requested for smaller sizes and verbal reports.
  • Be assured that our lab makes use of modern gemological equipment, including imported microscopes from GIA.
"Every natural diamond is a masterpiece of nature. You will never find two gemstones that are 100% exactly alike in all the world."

The role of gemological laboratories is to guide the consumer in the path of identifying, verifying and grading the unique material he or she has purchased. It is our mantra that fair trade and proper disclosure be pursued by all who do business in this very rewarding industry.

Appraisal opinion can also be requested, although on a per-stone basis only. This is not an official service, and is based solely on opinion. The philippine market, jewelry stores and pawnshop enterprises will make use of their own proprietary systems of valuation which may differ from one another's, as well as from our own.

Any appraisal opinion requested from or given by the Gemcamp Laboratory, is based on wholesale prices at the international level- specifically with data gathered from the annual Hong Kong jewellery shows, which are the largest gatherings of the trade worldwide. This information, combined with existing records, pricing knowledge and trade experience constitutes our opinion on all appraisal values. Any valuation opinion given is strictly informal, and our laboratory does not in any way guarantee, take responsibility for, or endorse this data.

A Professional Opinion on the Four C's.

World-Class Sciences meet
Practical Trade Experience.


Most gem-quality diamonds rank on the 'normal' scale, which makes use of  the D-Z incremental grading values for color. 


Diamonds can be seen in a variety of clarity levels, ranging from the top quality "flawless" gems to the commercial "included" stones. 


The full range of diamond cut grades can show obvious differences in the optical properties of brilliance, scintillation and fire.

Carat Weight

Value increases significantly for gems with familiar weights designations, like the half carat, one carat or two carat weights.

Every stone is carefully handled with skill and precision throughout our process.

Upon arrival at the lab, here is a step-by-step walkthrough.

A close up view of our Gemological Microscope at Gemcamp Lab in Metro Manila, Philippines

1. Take In Period

Once you've arrived at the Gemcamp Laboratory, have a chat with our in-house gemologist on the type of report or consultation you would like for your stone. Afterwards, a simple take-in form can be filled out before we begin our evaluation.

2. Scientific Observation

Each gem grading or identification job requires a suite of instrument tests to be performed. Not all submissions will incur the exact same set of tests, but several mandatory procedures will be conducted, and their results observed and recorded.

3. Gemological Analysis

Upon acquisition of data, our certified graduate gemologist will then analyse the test results individually and then cumulatively to obtain the lab verdict for the grade / identity of the submitted gemstone material.

4. Report and Verification

Whether you request a verbal or written report, our gemologist will provide you with the verdict dutifully. Before doing so though, he will return your gemstone along with a form to confirm its release.

Contact Us

Get in touch with a Gemologist.

Please contact our on-call gemological staff for a thorough assessment of your important gem-related needs.

(Text Inquiries Only)
0917 8382788
88 Capitol Hills Drive
Brgy. Old Balara, Quezon City
Female gemology student holding up a diamond with her gem-tweezers for gemological examination in our Manila Lab

Discover More Today.
Become a Diamond Connoisseur.

Here at the Gemcamp Laboratory, feel free to ask and chat with us about anything diamond-related. Whether you would like to know more about the current trade events or possibly compare the grading differences between foreign laboratories, our friendly gemologists are always happy to help you learn and grow as a true diamond connoisseur.

Mining natural gemstones shown by our Philippine Gemological Laboratory during an educational presentation

Watch Our Gemologists Verify & Grade Your Diamonds in Your Presence.

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We can procure weekend appointments if provided with a three-day lead time. Please visit our FAQ Corner for any additional information