Clarity describes internal inclusions and external blemishes observed under standardized grading conditions.

Flawless means no inclusions or blemishes are visible to a skilled grader at 10× magnification.

Internally Flawless means no inclusions are visible at 10×, although minor surface blemishes may be present.

Very Very Slightly Included diamonds have inclusions that are extremely difficult for a skilled grader to see at 10×.

Very Slightly Included diamonds have minor inclusions that range from difficult to somewhat easy to see at 10×.

Slightly Included diamonds have noticeable inclusions at 10×; whether they are eye-visible depends on the individual stone.

Included grades have inclusions that are obvious under 10× and may affect transparency, appearance or durability.

Eye-clean is a retail description meaning inclusions are not readily visible to the unaided eye under a stated viewing condition; it is not an official clarity grade.

VS1 is a higher laboratory clarity grade, but both can look identical without magnification.

VS1 often offers stronger value when both diamonds are eye-clean and otherwise comparable.

Often not without magnification, but inclusion type, size and location matter.

A carefully selected eye-clean SI1 can offer value, while VS2 provides a larger safety margin for invisible inclusions.

No. VVS is desirable for rarity and purity, but it is not necessary for a beautiful eye-clean diamond.

It can appeal to collectors or buyers who value rarity, but it usually carries a premium with little face-up visual difference.

Cut is usually more important for sparkle. Severe inclusions can reduce transparency, but small inclusions often do not materially affect brilliance.

Some inclusions, especially large feathers or cavities near vulnerable areas, can matter for durability.

Yes. Step cuts such as Emerald and Asscher reveal inclusions more readily than many brilliant cuts.

VS1–VS2 is a comfortable range; selected SI1 stones can also be eye-clean.

VS1–VS2 is a practical starting range, with inclusion location checked carefully.

VS1 or higher is often preferred because the open step facets can reveal inclusions more easily.

VS1 or higher is a useful starting point for the same reason as Emerald cuts.

VS2 can often be a strong value because brilliant faceting may hide small inclusions.

VS2 is a common value target, though facet pattern and inclusion location should be checked.

Yes. Inclusions may be easier to notice in larger diamonds.

Often it is useful to consider VS1 or better, especially in open-faceted shapes, but the actual inclusion plot matters more than a rule.

Yes. Lab grown diamonds use the same clarity terminology and grading framework.

Yes. They can contain growth-related inclusions or features even though they are created in controlled environments.

Features can vary by growth method and stone, including metallic or nonmetallic inclusions, growth remnants and strain-related features.

Specialized laboratories use multiple observations and instruments to determine origin; consumers should rely on a reputable grading report.

Check clarity grade, comments, measurements, origin disclosure, report number and plotted characteristics when provided.

No. It generally identifies the report number; clarity details are found on the grading report.

Sometimes, but a setting should never be used to conceal a durability-risk feature without proper evaluation.

Not necessarily. Their visibility depends on size, location and contrast.

Many are harmless, but large or surface-reaching feathers in vulnerable positions deserve closer inspection.

A cloud is a group of tiny pinpoints; its significance depends on density and extent.

A crystal is a mineral or diamond crystal enclosed within the diamond.

A needle is a thin elongated crystal inclusion.

A cavity is an opening on the surface, often where a crystal was removed or exposed.

It depends on the stone, but once clarity is eye-clean many buyers allocate more budget to cut, size or color.

Cut usually has the stronger effect on brilliance and visual performance.

VS1–VS2 is a popular balance; the best choice depends on shape, size and inclusion location.

VS2 or carefully selected SI grades can offer value because earrings are viewed from greater distance.

VS2 is often a practical target, adjusted for stone size and design.

Consistency and overall clean appearance matter more than extremely high clarity in each small stone.

Sphere Diamond at CentralWorld Bangkok can help compare lab grown diamonds and their IGI reports side by side.

Sphere Diamond offers IGI-certified lab grown diamonds for qualifying stones and selected designs; confirm the exact documentation for your chosen stone.