Home Diamond Diamond Details

1.66 Carat Round Cut Diamond

(Ideal Cut | D Color | SI1 Clarity)

$901

Compare

Wishlist

Hint It

Free Shipping
Secure Payment
Free 7 Days Return

View Report

Diamond Details

Shape:

Round

Shapes

Round

Oval

Princess

Radiant

Cushion

Asscher

Emerald

Marquise

Pear

Heart

There are 10 different shapes to choose from to suit every personality and style. The Round Brilliant continues to be the world’s most popular due to its fire, brilliance and classic look. If you are searching for something unique, opt for a fancy shape.

Cut:

Ideal (I)

Diamond Cut

Fair
Good
Very Good
Excellent

Good quality cut which reflects some light while maximizing weight. While not as brilliant as a good cut, still a quality diamond

Premium quality cut to optimize the size without sacrificing quality or beauty. Reflects most light that enters.

Superior quality cut that reflects nearly as much light as the ideal cut while at a substantially lower cost.

Exquisite quality cut to create the optimal combination of brilliance and fire. Reflects nearly all light that enters the diamond.

Color:

Diamond Color

Although these diamonds are slightly warm, they still offer a great value.

These diamonds have slight color, which tends to be more visible in diamonds over 1 carat.

Near-colorless at an exceptional value. These diamonds have color which is only noticeable when compared to higher color grades.

F diamonds have slight color which can only be detected by an expert gemologist. Although F diamonds have slightly more color than E diamonds, they are still classified as colorless.

E diamonds feature slight traces of color that elude even a trained eye, earning them a colorless grade.

D is the best color grade. These diamonds are totally colorless and very rare.

Clarity:

Slightly Included (SI1)

Diamond Clarity

I1
SI2
SI1
VS2
VS1
VVS2
VVS1
IF
FL

Included 1. Some inclusions could be visible to the naked eye.

Slightly included 2. The inclusions are visible under 10x magnification, and may be visible to the naked eye.

Slightly included 1. The inclusions are visible under 10x magnification, but are not very visible to the naked eye.

Very slightly included 2. Inclusions are difficult to detect under 10x magnification. Inclusions are typically not visible to the naked eye.

Very slightly included 1. Inclusions are difficult to detect under 10x magnification. Inclusions are not visible to the naked eye.

Very very slightly included 2. The inclusions are difficult to see even under 10x magnification. They have only slightly more inclusions than VVS1 diamonds.

Very very slightly included 1. The inclusions are difficult to see even under 10x magnification.

Internally Flawless. These rare and beautiful diamonds boast no internal flaws.

Flawless. The ultimate in diamond clarity, completely free of internal or external flaws.

Carat Weight:

1.66

Carat Weight

1.66ct.

Carat refers to the weight of a diamond, which is directly proportional to its size. Use the slider to find the range you are interested in browsing.

Lab:

IGI

Lab

Mostly all our diamonds are independently certified from one of the world’s leading labs. Always ensure you are purchasing an independently certificated diamond to validate its quality, as many diamond retailers self-certify.

Polish:

Excellent

Polish

The overall condition of a finished diamond's faceted surfaces, including how smoothly the facets have been polished, whether any marks are visible from the polishing wheel, and how defined the edges of each facet are. Polish marks are almost always invisible to the unaided eye, but good polish is essential for maximum light performance.

Symmetry:

Excellent

Symmetry

Describes the alignment of the facets of the diamond. If facets are misaligned, the diamond may poorly reflect light. Symmetry is graded from Ideal / Excellent, Very Good, Good, Fair, or Poor. Symmetry grades of Good or higher have the least effect on the brilliance of the diamond and are suitable for the finest quality jewelry. Certain gem labs, such as Gemscan, incorporate Symmetry into an overall Cut grade.

Fluorescence:

None

Fluorescence

Very Strong
Strong
Medium
Faint
None

Describes the diamond's response to ultraviolet light. In diamonds with strong or very strong fluorescence, there may be some interference with the flow of light which causes a milky or oily appearance.

Depth %:

62.3

Depth Percentage

The height of a diamond, measured from the culet to the table, divided by its average girdle diameter. One of the basic proportions that contributes to a diamond's appearance, brilliance and fire.

Table %:

Table Percentage

The width of the diamond's table expressed as a percentage of its average diameter. A component of the overall cut grade, this measurement is critical to a diamond's light performance.

Measurements:

7.52 X 7.56 X 4.70 mm

Measurements

Diamonds are given three measurements to specify their dimensions. The measurements determine the length to width ratio and can indicate the quality of cut of the diamond.

Girdle Minimum:

Medium

Girdle Minimum

Where the crown and pavilion meet, defining the diamond's outline. Avoid extremely thin girdles, which can make a diamond more prone to damage, or extremely thick, which can cause the diamond to look smaller than diamonds of similar weight.

Girdle Maximum:

Slightly Thick

Girdle Maximum

Crown Height:

16%

Crown Height

Crown height percentage is calculated by dividing the actual height of the crown by the average diameter. Measurements are rounded to the nearest .01 millimeters. The crown is the height of the diamond from the girdle edge to the surface of the table facet.

Stock No:

700715

Got Questions?

Connect With A Specialist

(978) 988-8884 Email Us

You Might also Like

Shape

Carat

Color

Clarity

Cut

Lab

Price

Compare

Round

1.13

VS1

IGI

$839

Details

Round

1.13

VS1

IGI

$839

Details

Round

0.95

SI2

IGI

$499

Details

Round

1.77

SI1

IGI

$726

Details

Round

1.71

SI2

IGI

$1,064

Details

Round

5.03

VS1

IGI

$655,786

Details

Round

5.05

VS1

IGI

$658,394

Details

Round

5.06

VS1

IGI

$659,698

Details

1.66 Carat Round Cut Diamond

Diamond Details

Got Questions?

Connect With A Specialist

Company

Collection

Get in Touch

Company

Collection

Get in touch

Contact Us

Create Your Own Ring

Shop By Shape

Create Your Own Ring

Shop By Shape

Create Your Own Ring

Shop By Style

Shop By Shape

Shop By Metal

Create Your Own Ring

Shop By Style

Shop By Shape

Shop By Metal

Shop By Type

Learn About

Shop By Type

Learn About

1.66 Carat Round Cut Diamond

Diamond Details

Shapes

Diamond Cut

Diamond Color

Diamond Clarity

Carat Weight

1.66ct.

Lab

Polish

Symmetry

Fluorescence

Depth Percentage

Table Percentage

Measurements

Girdle Minimum

Girdle Maximum

Crown Height

Got Questions?

Connect With A Specialist