Search

# Measuring Table Size

The most accurate way to measure a table is with a table gauge. This is a small, transparent, plastic ruler that measures in increments of tenths of a millimeter (0.1 mm). A scope or a loupe is required to measure the table in four directions with your table gauge. Measure the distance across the table starting between two stars (where the points join) to exact opposite location. Continue reading

# Table Percentage Ratio Method in Calculating Percentage | Table Ratio Distances

The Table Percentage Ratio Method relies on your perception for comparing distances for table size estimation. Under 10x magnification, draw an imaginary line from the girdle, bisecting the star facet and extending it to the center of the table, directly above the culet. Continue reading

# Table Percentage Bowing Method in Calculating Size | Table Size Estimating

#gallery-1 { margin: auto; } #gallery-1 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 50%; } #gallery-1 img { border: 2px solid #cfcfcf; } #gallery-1 .gallery-caption { margin-left: 0; } /* see gallery_shortcode() in wp-includes/media.php */ A perfect square… Continue reading

# Diamond’s Ideal Star Facet Shape | Diamond Star Equilateral Triangle

The ideal star facet is an equilateral triangle.The ideal star facet shape is an equilateral triangle, (all three sides equal in length). The star facet should reach a touch less than half-way down the crown. Unfortunately not all stars are… Continue reading

# Estimating Table Size By Eye

An off-center table will have a direct affect on the value of the diamond due to loss of symmetry and salability. With practice, the simple process of louping the diamond for estimation of table size will come without needing any… Continue reading

# Likeliness of Breakage

Razor-sharp girdleSuppose we have a diamond that is extremely fish- eyed and has a Very Thin to Extremely Thin girdle. The likeliness of this stone chipping is very high. The absolute worst combination for possible breakage are the very acute… Continue reading

# How Diamond Girdle Thickness Affects Color Grade

72% 1:2Many cutters look at the type of girdle as a strategy to manipulate the body color of the diamond. The general rules-of-thumb are: A thicker gray (bruted) girdle to detract yellow. It can make a difference of a half… Continue reading

# A Bruted (or Gray) Girdle vs a Faceted Girdle | Which Girdle is Better

The industrial diamond is mounted in the end of the girdling stick and then applied against the rotating diamond which is being shaped. The amount of pressure applied may result in a burnished girdle or on the other extreme, a… Continue reading

# A Faceted Girdle vs a Gray Girdle | Advantages of a Faceted Girdle

It is very common to see “Very Thick” to “Extremely Thick” faceted girdles on elliptically shaped fancy cuts such as this pear shape. A faceted girdle requires more effort by the cutter since each facet must be polished one at… Continue reading

# The Overall Appearance of the Girdle

The girdle is an important part of the diamond for its protectiveness against damage, but it must also be attractive since it is easily viewed. The description of “attractive” is used so you can be aware that the girdle, like… Continue reading

# Diamond’s Upper & Lower Girdle Facets by Definition

Upper and lower girdle facets add much additional internal reflection (brilliance) to a diamond. Upper and lower girdle facets include the 32 facets,16 on top, 16 on bottom, that add additional brilliance to a diamond. Many cutters and dealers refer… Continue reading

# The Importance of Upper & Lower Girdle Facets on Diamond

Like every other facet on the diamond, the upper/lower girdle facets play an important role in bringing the stone to life. These additional 32 facets reflect the light into a multitude of directions. Without them, only slight brilliance is apparent,… Continue reading