A diamond is crystalline carbon arranged in a strong three-dimensional structure that creates exceptional hardness and distinctive optical properties.

Yes. They have the same crystal structure and essentially the same chemical, physical and optical properties as natural diamonds.

Cut, color, clarity and carat weight. Together they describe important characteristics of a diamond.

Cut usually has the strongest effect on visible sparkle, although the best balance depends on shape, design and budget.

Cut describes how well a diamond’s proportions, facets, polish and symmetry work together to return light.

Color grading describes how much body color is visible, commonly using a D-to-Z scale for colorless-to-light-yellow diamonds.

Clarity describes internal inclusions and surface blemishes observed under standardized conditions.

Carat is a unit of weight. One carat equals 0.2 grams.

No. Face-up size also depends on shape, proportions, depth and measurements.

Ideal cut is a trade term used for diamonds with proportions intended to deliver strong light performance. Standards vary by laboratory and seller.

For round brilliant diamonds, it commonly refers to Excellent grades for cut, polish and symmetry.

It is a precise optical pattern seen in some highly symmetrical round brilliant diamonds when viewed through a special scope.

No. It indicates optical symmetry, but overall proportions, contrast and light performance still matter.

Fluorescence is visible light emitted by some diamonds under ultraviolet radiation.

Not automatically. Its effect varies by strength, color and the individual diamond.

A grading report records characteristics such as measurements, carat, color, clarity and origin identification.

Yes. IGI issues grading reports for laboratory-grown diamonds.

IGI-certified lab grown diamonds are available for qualifying stones and selected designs. Confirm documentation for the exact piece.

Match the report number and grading details with the diamond and verify the report through IGI’s official system.

A microscopic inscription on the girdle that may include the report number or other identification.

Depth percentage compares total depth with average width and affects face-up spread and light performance.

Table percentage compares the table facet width with the diamond’s width.

The girdle is the outer edge separating the crown from the pavilion.

The culet is the small facet or point at the bottom of the pavilion.

Round brilliant is engineered for strong brilliance, but every shape can be attractive when well cut.

Oval, marquise and pear shapes often provide generous face-up coverage for their weight.

A dark bow-shaped contrast pattern that can appear across elongated fancy shapes such as oval, pear and marquise.

Eye-clean VS2 or SI1 diamonds can offer value, but the best grade depends on size, shape and inclusion placement.

Near-colorless grades such as G to H often balance appearance and budget, depending on metal color and diamond size.

No. Many near-colorless diamonds appear very white in jewelry.

Yes. They can show growth-related inclusions and features.

Yes. Diamond is extremely hard but can chip if struck at a vulnerable edge or point.

Use warm water, mild soap and a soft brush, rinse carefully and dry with a lint-free cloth.

Frequently worn pieces should be checked periodically and whenever a prong, clasp or stone feels different.

Prong, bezel, channel and other settings can all be secure when properly engineered and maintained.

A metal rim surrounds all or part of the diamond’s edge.

A halo uses smaller diamonds around a center stone to increase visual presence and sparkle.

A row of small diamonds placed below the center stone, usually visible from the side.

18K white, yellow and rose gold and Platinum 950 are all suitable depending on design, color preference, weight and care.

Balance cut, shape, measurements, color, clarity, carat, report, setting and budget.

Focus on pair matching, face-up size, total weight, backs and comfort.

Consider pendant size, chain length, setting, movement and how the diamond sits on the body.

Check matching, flexibility, clasp security, setting wear and fit.

Visit Sphere Diamond at CentralWorld Bangkok to compare shapes, sizes, grades, settings and IGI reports.

Yes. Custom projects may include diamond selection, metal, setting, proportions and personal design details.

They generally cost less than natural diamonds with comparable specifications, although prices change over time.

Secondary-market behavior is variable and not guaranteed. Buy primarily for wear, design and meaning.

No. Future resale depends on rarity, demand, documentation, condition and selling channel.

Prioritize cut, an attractive face-up appearance, an eye-clean clarity level and a setting that protects the stone.

Online research is useful, but in-person comparison helps evaluate scale, sparkle, color, comfort and craftsmanship.