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DIAMOND EDUCATION

Many people may ask the question about the difference between what is called Natural and Polished Diamonds. They are both different and the same in the mean time.

A natural diamonds is a rough, uncut and unpolished diamonds stone. It has the exact chemical compositions as a polished diamonds.

Polished Diamonds is a natural diamonds that has been through faceting, cutting, polishing process to make it sparks and alive.

DIAMOND ANATOMY

TABLE

the most upper, flat horizontal area of its surface.

Crown

the whole part of its top, start from the table to upper girdle.

Pavilion

lower part of diamonds starts from lower girdle to culet.

anatomi berlian

Girdle (sabuk)

the outer edge of a diamond, where crown and pavilion meets.

Depth (kedalaman)

the distance of a diamond, measured from the table parts to the culet, viewed from the side.

Culet

the bottom edge of diamonds.

anatomi berlian cut

DIAMOND CUT

Cut refers to diamonds’ proportion. The beauty of a diamonds really depends on how proportional it’s cut, as it will affect how the diamonds reflect and diffuse the light that enters it.

A proportional diamonds cut will reflect the light towards to where it came, so the diamonds will appear sparkling and shinny. The following are three light patterns reflected by a diamonds:

SHALLOW

If a diamonds faceted and cut too shallow, the light will enter the pavilion at low angle and it will passes the facet, escaping through the bottom of the diamonds.

DEEP

Too deep diamonds cut will let the light enters the first pavilion. It will be reflected to the second pavilion, but in a lows angle, so the light won’t reflected back toward the crown but it will escape to the bottom of the diamonds.

IDEAL

A proportional diamonds cut will let light enters the pavilion at proper angle. It will reflect back toward the diamonds crown.

CUT
Cut, atau potongan, adalah faktor penting yang menentukan keindahan suatu berlian.

DIAMOND CUT GRADES

Ideal Diamonds can perfectly reflect the light that enters, since it was designed to maximize the diamonds’ sparkles.
Excellent Reflect nearly all of the light that enters. The diamonds from this category has a quality near an Ideal cut grade, with a lower price.
Very Good A diamonds of this category reflects most of the light that enters the diamonds.
Good This cut grade describes that a diamond reflects the majority of the light that enters. The quality is near Very Good grade, but it normally comes with a lower price.
Fair The diamonds from this category let much of the light escape from sides or bottom since the cut was not proportional, and it purposely made to get bigger diamonds size.

DIAMOND SHAPES

*Round shaped diamonds is the most popular choice. It usually has a higher grade more than any other shapes, since it is able to reflect the light perfectly and maximize the diamond sparkles.

DIAMOND COLOR

Color is one of 4 diamonds’ characteristics that determine diamonds quality. However, some colorless diamonds that come with yellow or brown tint will have lower prices. The less tint (body color) it has, the higher its value and price.

diamond color
COLOR
ORORI use only diamond with the color level "F" (without a trace of yellowish) for jewelry products.

DIAMOND COLOR GRADES

D - E - F A diamond has the best quality as it reflects light perfectly and has no body color (tint) is a diamonds from this category.
G - H - I - J A diamond in this category has a little traces of tint color but it will be hardly seen with naked eyes.
K - L - M The yellow tint in a diamonds in this category is visible with naked eyes.
N - O - P - Q - R Diamonds with this color grade have yellow or brown tint that’s easily seen.
S - T - U - V - W - X - Y - Z A diamonds in this color grade category has a slightly much color.

*Diamonds come not only as a colorless diamonds, but it also has color variation, such as pink, blue, yellow, black etc. They are called fancy color diamonds.

DIAMOND CLARITY

A diamond normally has a birthmark called inclusion (inside it) and blemish (on its surface), caused by the extreme heat and pressure during its forming deep down on earth.

Clarity refers to these inclusion and blemishes (birthmark) degrees present in a diamonds. The less inclusion it has, the more it sparks and the higher value a diamonds will have.

TYPES OF DEFECTS IN DIAMOND

Imperfections inside a diamond (Inclusion):

contoh cacat dalam
Examples of defects in

BEARDING:
stress hair liked-line, sometimes appears during cutting process.

CARBON SPOTS:
black spot inside a clear diamonds.

CAVITY:
a deep or large opening in a diamonds.

CELEVAGE:
a straight line with no feathering

CLOUD:
group of white inclusions, make diamonds looks cloudy.

FEATHER:
a fragment inside the diamonds that looks like feather and white, due to cleavage or fracture.

KNOT:
Irregular crystal growth which may appear milky, like faint lines or streaks, or may be colored or reflective.

LASER LINES:
Vapor-like trails left behind when lasers are used to remove dark inclusions from a diamonds.

PINPOINTS:
small spots inside diamonds.

Imperfection on the surface (Blemishes)

contoh cacat di permukaan
Examples of defects on the surface

SCRATCHES:
slight white line, curve or straight

FRACTURE:
a crack on the surface of a diamonds

NICKS:
a fragment near the girdle or facet edge

PITS:
a small hole, resemble to white dot

POLISH LINES:
a slight line caused during polishing process

CLARITY
Clarity mengacu pada ada atau tidaknya cacat di dalam batu berlian. ORORI menghadirkan berlian dengan tingkat kejernihan flawless (tanpa cacat) hingga slightly included (dengan sedikit cacat).

DIAMOND CLARITY GRADES

FL (Flawless) There is neither inclusion nor blemish could be seen by a skilled grader, using 10X magnification.
IF (Internally Flawless) No inclusion but a diamond has a blemish that can only be seen with a 10x magnification by a skilled grader.
VVS1, VVS2 (Very Very Slightly Included) VVS1
The inclusion is only visible from the crown, seen through 10x magnification by a skilled grader.

VVS2
Inclusion could be seen under 10x magnification but considered as minor category.
VS1, VS2 (Very Slightly Included) Inclusion is possible to be seen by naked/untrained eye but in a close inspection and ideal condition. A skilled grader will notice it under 10x magnification.
I1, I2, I3 (Included) I1
A diamond’s inclusion is noticeable in this category under 10x magnification.

I2
A diamond in this category has some inclusion that can be seen by naked eye.

I3
Inclusion is more intense than I2, can be seen by naked eyes and it will affect diamond’ durability and brightness.

DIAMOND CARAT

A diamond’s price is determined by its carat weight. Carat is diamonds’ unit weight; it does not refer to a diamond’s size. A carat is equal to 200 milligram. The bigger carat weight is, the higher its value and price. There’s still a really few number of diamonds with big carat produced. For example, one diamonds with 2 carats weight is more expensive than two diamonds with 1 carat for each, even if the cut, color and clarity grades are the same.

What is CT.TW ?

Carat (CT) is used to describe a diamonds weight, but a CT.TW is used to describe total carat weight of numbers of diamonds studded as jewelry. For example, if a ring has three diamonds with 0,10 carat each, then the total carat weight are 0,30 CT.TW.

CERTIFICATE DIAMOND

Before purchasing diamonds, make sure the diamonds has a certificate as a proof that the diamonds has been evaluated, measured and observed by experts with a magnification glass, microscope and another proper equipment. Diamond’s certificate, or commonly called diamond’s grading report, contains scientific data about diamonds dimension, clarity, color, symmetric, and other characteristics formulated by gemologist. Mostly, diamonds will be provided with a certificate if the weight starts from 0,30 ct.

There are now many laboratories that provide such certification, one who is known to have a high consistency and accuracy when evaluating a diamond is GIA (Gemological Institute of America).

 
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