0.75 Carat Alexandrite (Princess, 4.88×4.88mm, Bluish Green)

Color:

bluish green

actual size

Actual size is set for screen

How big is a 0.75 carat princess-cut Alexandrite?

It depends on the cut parameters, but a typical size of a 0.75ct princess-cut Alexandrite would be around 4.88×4.88 mm (±6%). You can check how big it looks on a ring and finger below.

Ring:

Gold
Platinum

Skin tone:

Pale
Light
Medium
Dark

Ring width: 3.0 mm

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64 mm

Your settings
Ring	Gold
Skin tone	Light
Ring diameter	16.9 mm
Ring width	3.0 mm
Finger length	64 mm
Finger coverage	29 %

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Ring diameter: 16.9 mm

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Additional Info

Named after Czar Alexander II (1818-1881) Alexandrite is a rare and valuable color-change variety of chrysoberyl. Alexandrite possesses a surprising ability to change color - from green or bluish-green in daylight, it transforms to purplish or raspberry red in incandescent light.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Gem Details

Name:	Alexandrite
Mineral Group:	Chrysoberyl
Shape:	Princess
Chemical Formula:	BeAl₂O₄
Crystal Structure:	Orthorhombic
Hardness:	8.5
Specific Gravity	3.73
Carat weight:	0.75 ct
Gram weight:	0.15 g (0.0053 ounces)
Points:	75 pts
Length:	4.88 mm
Width:	4.88 mm
Est. face-up size:	23.81 mm²
Volume:	40.21 mm³
Length-to-width ratio:	1
Refractive Index:	1.744 - 1.755
Luster:	Vitreous
Wearability:	Durable gem for daily wear
Care Instructions:	No special or unusual care
Color:	Alexandrite can be found in the following colors:
Birthstone:	Alexandrite is a birthstone for the month of June

Popular comparisons:

About Alexandrite Specific Gravity

Alexandrite has a specific gravity of approximately 3.68 - 3.78, with 3.73 being a generally accepted standard average for gem-quality material.

For all the Alexandrite size calculations on this website, the specific gravity of 3.73 is used.

To learn more about it and why it matters, and to compare densities of all the gemstones on one page, click here.

Ring & Finger Simulator

Use the simulator on this page to play around with different ring and finger configurations.

To select a different gemstone, shape, color or size, or to compare two gems side-by-side, use the form at the top of the page. Comparison example: 0.75ct Alexandrite vs Diamond (Princess Cut)

If you want to compare princess-cut Alexandrite sizes from 0.25 to 40ct on one page, see Princess Cut Alexandrite Size Chart

In order to view real-world sizes on your screen, ensure that the actual size is set to your device screen size (diagonal in inches).