Diamonds have different value depending on their characteristics so it’s essential to have a measuring system to compare the various and different qualities.
For this reason, between the 1940’s and the 1950’s, the GIA (Gemological Institute of America) developed the International Diamond Grading SystemTM and the “4C’s”.


The carat is the unit of mass for diamonds and it equals 0.2 grams. A carat is also divided in 100 points. The institutions that certify the diamond have extremely accurate measuring instruments that detect up to 6 decimal points.


Completely colorless gems, inappropriately called “white”, are the highest valued and are but a small percentage of those extracted. In fact, more than 90% of diamonds have yellow and brown nuances.

There is also a small quantity of naturally colored diamonds that can be more or less intense: yellow, orange, pink, green, blue and red. Due to their rarity they can reach very high prices.

Before the GIA created the D-Z grading scale there were various gemological grading systems. Some used the alphabet letters (A,B,C) with multiples of A for the best gems, some the Arab numeral system (0,1,2,3) or Roman numbers (I, II, III) and some used verbal descriptions such as “river”, “top wesselton”, “blu gems” etc… Since the inventors of the GIA grade scale wanted to do something completely new, they decided to start their classification from the letter “D” because it had never before been used to describe the highest quality diamonds.

Diamond Love Bond only offers D – E – F – G – H colored diamonds.


There are other elements that can significantly influence the value of a diamond: one of these is fluorescence. Under ultraviolet lights diamonds can be fluorescent manifesting a more or less intense blue color and sometimes yellow, green, pink. It’s important to determine the fluorescence of the diamond because the intensity of the phenomenon can have an impact on the color of the gem.

The natural “colorless” diamonds offered by Diamond Love Bond are exclusively “none” fluorescent.


The International Grading System, GIA, created a purity scale with eleven levels that range from FL (flawless) to I3 (Included 3).
The GIA purity scale was developed because the terms used before were unclear such as “loupe”, “piqué” or “clean”.

Diamond Love Bond offers its clients only FL and IF diamonds.


In order to perfectly respond to the light (brilliance, fire and sparkle) a diamond has to be perfectly cut respecting the rigid mathematical geometric designs, dimensions and angles for the facets.
In order to reach perfection the ability of the master cutter is essential. The brilliant round-cut with 57 or 58 facets is the most widely used. There are other shapes:  tear, heart (59 facets), navette or marquise (58 facets), emerald (48 or 50 facets), oval (56 facets), princess (76 facets), radiant (62 or 70 facets).

Without the precision and perfection of the cut a diamond can lose large part of its beauty. The “allure” of a natural diamond relies, more than anything else, on the quality of the cut.

The cut of every diamond has three attributes that are extremely difficult to analyze and quantify:
Brilliance is the total reflected light
Fire is the dispersion of light in the colors of the spectrum
Scintillation is the flash of light or “sparkle” that appears when moving the diamond.

In a perfectly cut diamond the light that comes into the stone is reflected on the viewer creating a beautiful prismatic game and a bright white sparkle in the color of the iris.

Three factors are considered to determine the value of a diamond from the quality of the cut: proportions, symmetry and polish.
In early 2005, after 15 years of intense research and tests, the GIA established the Diamond Cut Grading System for brilliant round-cut diamonds in the color scale from D to Z, with “excellent” to “poor” grades.


Diamonds that have one, two or three “Very Good” characteristics see their price reduce from 5 to 15% compared to Excellent. One single Good characteristic can reduce the price by another 10%. There is a 35% difference in price between a Triple Good and a Triple Excellent.

Diamond Love Bond exclusively sells diamonds that have qualified as excellent in all three of the quality conditions. For the first time in Italy we also offer diamonds with Rapaport IDC – Investment Diamond Certificate.

This new certificate can only be given to brilliant round-cut natural diamonds that already received a gemological certificate by the GIA – Gemological Institute of America in the last two years (excluding all other gemological certificates such as HRD, IGI), that have Triple Excellent quality characteristics (excluding diamonds that have very-good, fair, poor quality), no fluorescence (excluding Faint, Medium, Strong, Very Strong fluorescence) and have rigid measurement parameters.