Chapter 7104 — Customs Tariff Headings

AT-Cut Piezoelectric Quartz Blank

AT-cut piezoelectric quartz blanks are synthetic quartz crystals precision-cut for use in oscillator applications. Their piezo-electric characteristics provide optimal temperature stability, making them essential components in electronic timing devices. These blanks are unmounted and ungraded, falling under tariff item 7104.10.00 as piezo-electric quartz.

Bulk Piezoelectric Quartz Blanks 5MHz

Bulk piezoelectric quartz blanks, such as 5MHz synthetic quartz blanks, are precision-ground for use in consumer electronics timing circuits. These blanks are graded for piezo-electric uniformity and are temporarily strung for transport convenience. They are unmounted and ungraded, qualifying for classification under tariff item 7104.10.00 as piezo-electric quartz.

Frequency Control Piezo-Quartz Bar

Frequency control piezo-quartz bars are synthetic quartz bars engineered for precision frequency control in telecommunications equipment. These bars utilize the inverse piezo-electric effect to maintain stable frequencies. They are worked but unmounted, falling under tariff item 7104.10.00 as piezo-electric quartz.

High-Purity Piezoelectric Quartz Plate

High-purity piezoelectric quartz plates are ultra-pure synthetic quartz plates used in medical ultrasound transducers. These plates convert electrical energy to mechanical energy via the piezo-electric effect. They are graded and unmounted, qualifying for tariff item 7104.10.00 as piezo-electric quartz.

Piezoelectric Quartz Crystal for Watches

Piezoelectric quartz crystals for watches are high-precision synthetic quartz crystals engineered for use in quartz watch movements. These crystals exhibit piezo-electric properties when subjected to mechanical stress, ensuring accurate timekeeping. They are unmounted and ungraded, falling under tariff item 7104.10.00 as piezo-electric quartz.

Piezoelectric Quartz Sensor Element

Piezoelectric quartz sensor elements are synthetic quartz elements used in pressure and vibration sensors for automotive applications. These elements generate electrical signals via the piezo-electric effect. They are unmounted and worked, qualifying for tariff item 7104.10.00 as piezo-electric quartz.

SC-Cut Synthetic Piezo Quartz Crystal

SC-cut synthetic piezo quartz crystals are stress-compensated synthetic quartz crystals designed for aerospace GPS receivers. These crystals offer superior frequency stability through piezo-electric optimization. They are unmounted and ungraded, falling under tariff item 7104.10.00 as piezo-electric quartz.

Synthetic Piezoelectric Quartz Resonator Wafer

Synthetic piezoelectric quartz resonator wafers are thin synthetic quartz wafers cut for high-frequency resonators. These wafers leverage the piezo-electric effect for signal generation in communication devices. They are unmounted and graded, qualifying for tariff item 7104.10.00 as piezo-electric quartz.

CVD Lab-Grown Diamond Rough

CVD lab-grown diamond rough in plate or block form, simply sawn into facets, unworked or roughly shaped. These synthetic diamonds are not yet graded, strung, mounted, or set, and are destined for further processing into gem-quality stones.

HPHT Synthetic Diamond Melee Parcels

HPHT synthetic diamond melee parcels, small diamonds under 0.1 carat, roughly shaped into pyramidal or octahedral forms without faceting. These unworked synthetic diamonds are suitable for further gem processing and are not yet strung, mounted, or set.

HPHT Type IIa Synthetic Diamond Crystals

HPHT Type IIa synthetic diamond crystals, colorless and in octahedral crystal form, roughly shaped without facets. These unworked synthetic diamonds are intended for further processing into gemstones and are not yet strung, mounted, or set.

Lab-Created Diamond Sawing Blocks

Lab-created diamond sawing blocks, synthetic diamond blocks prepared for sawing into individual stones, roughly shaped with minimal processing. These unmounted synthetic diamonds are in bulk form and not yet graded or set.

Synthetic Diamond Cleavage Rough

Synthetic diamond cleavage rough, synthetic diamonds cleaved along natural planes to create roughly shaped pieces, unpolished and ungraded. These simply sawn synthetic diamonds are not yet strung, mounted, or set for retail.

Synthetic Rough Diamonds

Synthetic rough diamonds in their natural crystalline form, directly from CVD or HPHT processes, unworked and ungraded. These synthetic diamonds are not yet strung, mounted, or set, and are intended for further processing.

Cubic Zirconia Rough Preforms

Cubic zirconia rough preforms are synthetic zirconium dioxide crystals grown by skull melting and roughly sawn into octahedral shapes for gem cutting. They are unworked or simply shaped, not strung, mounted or set, and therefore fall under tariff item 7104.29.00 as other synthetic semi-precious stones.

Grown Synthetic Aquamarine Rough

Grown synthetic aquamarine rough consists of hydrothermal synthetic beryl crystals in aquamarine color, presented as rough cleaved crystals. They are unworked or simply shaped, not strung, mounted, or set, and are classified under tariff item 7104.29.00 as other synthetic precious stones.

Hydrothermal Synthetic Emerald Rough

Hydrothermal synthetic emerald rough consists of synthetic beryl crystals grown in a hydrothermal solution and roughly shaped by cleaving. They replicate natural inclusions and are intended for jewelry cutters, but are not strung, mounted, or set, so they qualify as other synthetic precious stones under tariff item 7104.29.00.

Synthetic Alexandrite Rough

Synthetic alexandrite rough is color-change synthetic chrysoberyl grown by the Czochralski method, presented as roughly shaped boules. These are unworked beyond sawing, not strung or set, and fall under tariff item 7104.29.00 as other synthetic precious stones.

Synthetic Ruby Boule

Synthetic ruby boules are cylindrical synthetic corundum crystals grown by the Verneuil method, roughly shaped with minimal faceting removal. They are destined for optical windows and laser rods, but as unworked or simply shaped synthetic precious stones, they fall under tariff item 7104.29.00.

Synthetic Rutile Rough

Synthetic rutile rough consists of synthetic titanium dioxide crystals for optical polarizers, roughly sawn. They are unworked or simply shaped, not strung, mounted, or set, and are classified under tariff item 7104.29.00 as other synthetic semi-precious stones.

Synthetic Sapphire Rough Crystal

Synthetic sapphire rough crystals are roughly shaped synthetic corundum crystals produced via the Verneuil flame fusion process. They are used for watch bearings, laser components, and gem cutting, but as unworked or simply shaped synthetic precious stones, they fall under tariff item 7104.29.00.

Synthetic Spinel Rough Crystals

Synthetic spinel rough crystals are flame-fusion synthetic magnesium aluminate crystals in blue and pink shades, simply sawn for further processing into gems or optics. They are unworked or roughly shaped, not strung, mounted, or set, and fall under tariff item 7104.29.00 as other synthetic semi-precious stones.

Synthetic Topaz Rough

Synthetic topaz rough consists of flux-grown synthetic aluminum fluorosilicate, presented as rough boules. They are unworked or simply shaped, not strung, mounted, or set, and are classified under tariff item 7104.29.00 as other synthetic semi-precious stones.

YAG Synthetic Garnet Rough

YAG synthetic garnet rough consists of yttrium aluminum garnet synthetic crystals for laser rods and oscillators, presented as roughly shaped rods. They are unworked or simply shaped, not strung, mounted, or set, and fall under tariff item 7104.29.00 as other synthetic semi-precious stones.

Asscher Cut Lab-Grown Diamonds

Squared emerald-style Asscher cut synthetics, high clarity. Loose.

Asscher Cut Synthetic Colorless Diamonds 1.5 Carat

Precision-cut Asscher square synthetic diamonds, colorless (D color), 1.5 carats with step-cut facets for vintage appeal. Loose for jewelry setting in Art Deco styles.

Blue HPHT Synthetic Diamonds Melee

Tiny blue synthetic diamonds (0.8-1.2mm) created via HPHT with boron doping for color. Worked but loose, used in micro-pave jewelry designs.

Cushion Cut Lab-Grown Synthetic Diamonds 2 Carat

Large 2-carat synthetic diamonds in cushion cut, featuring soft rounded corners and fire-optimized facets. Ideal for solitaire pendants or statement rings, these are cut but not set.

Cut Synthetic White Diamonds 0.5 Carat Rounds

Lab-grown synthetic diamonds, precisely cut into round brilliant shapes with 58 facets, weighing approximately 0.5 carats each. They are not set in any mounting and are ideal for jewelry manufacturers to incorporate.

CVD Colorless Diamond Parcels 0.5ct

Parcels of colorless CVD-grown synthetic diamonds averaging 0.5 carats each, precision cut for sparkle. Sold to wholesalers for jewelry manufacturing.

CVD Green Synthetic Diamond Lots

Lots of green CVD synthetic diamonds from nitrogen exposure, various melee sizes. Specialty color for unique designs.

Faceted Synthetic Diamond Cushion Cuts

Cushion cut synthetic diamonds, faceted for maximum light return, 1.5ct average. Loose, worked synthetic stones.

Fancy Pink Synthetic Cut Diamonds 0.25 Carat

Color-enhanced lab-grown synthetic diamonds in fancy pink hue, cut into emerald or oval shapes at 0.25 carats. These high-clarity stones are perfect for accent settings in necklaces or bracelets.

Lab-Created Princess Cut Synthetic Diamonds 1 Carat

Synthetic diamonds cut in princess square shape, 1 carat weight, with excellent clarity and color grades (D-F, VVS). Produced via CVD or HPHT methods, these are supplied loose for setting in engagement rings or fine jewelry.

Marquise Cut Synthetic Diamonds 0.8 Carat

Elongated marquise cut lab-grown diamonds, 0.8 carat, near-colorless for bridge or cocktail jewelry. Cut but unset.

Oval Cut Fancy Yellow Synthetic Diamonds 0.33 Carat

Lab-created fancy yellow synthetic diamonds in oval cut, 0.33 carat melee size for halo settings or earrings. High brilliance, unset for jewelry fabrication.

Pear Shaped Lab Synthetic Green Diamonds 1 Carat

Pear-shaped synthetic diamonds with rare green coloration from lab processes, 1 carat, excellent cut for pendants. Loose and ready for jewelry mounting.

Radiant Cut White Synthetic Diamonds 1.2 Carat

Radiant rectangular cut synthetics, 1.2 carat white, for modern jewelry designs.

Round Brilliant Synthetic Blue Diamonds 0.75 Carat

Vivid blue lab-created diamonds, cut to GIA round brilliant standards, 0.75 carat size with VS clarity. Supplied loose in jewelry parcels for manufacturers creating luxury pieces.

Cut Cubic Zirconia Rounds

Cut cubic zirconia rounds are synthetic stones produced from zirconium oxide, precision-cut into brilliant round facets and graded for clarity and size. They are not set into any mounting or strung, making them suitable for use in jewelry manufacturing. These stones fall under tariff item 7104.99.00 as synthetic precious or semi-precious stones, worked but not mounted, set, or strung.

Moissanite Princess Cuts

Moissanite princess cuts are lab-created silicon carbide stones cut in a square princess style, designed as diamond simulants for engagement rings. These stones are unset and jewelry-ready, not strung or mounted. They are classified under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Reconstructed Ruby Brilliant Cuts

Reconstructed ruby brilliant cuts are synthetic rubies made from corundum, cut in a classic brilliant round style for maximum sparkle. These stones are not mounted or strung, making them ideal for ring or pendant settings. They are classified under tariff item 7104.99.00 as reconstructed precious stones, worked but not mounted, set, or strung.

Synthetic Amethyst Marquise Cuts

Synthetic amethyst marquise cuts are synthetic quartz stones cut in an elongated marquise boat shape, featuring a purple amethyst color for vintage-style jewelry. These stones are unset and not strung, suitable for jewelry manufacture. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Aquamarine Baguettes

Synthetic aquamarine baguettes are hydrothermally grown synthetic beryl stones cut into rectangular baguette shapes, used for side stone applications in rings and bracelets. These stones are precisely cut, unset, and not strung. They are classified under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Citrine Rounds

Synthetic citrine rounds are synthetic quartz stones cut and heat-treated to achieve a citrine color, featuring a brilliant round cut for everyday jewelry. These stones are not mounted and are unset, making them suitable for jewelry fabrication. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Emerald Emerald Cuts

Synthetic emerald emerald cuts are lab-created beryl stones cut in a step-cut emerald style to highlight color and clarity. These stones are unset and not strung, suitable for use in fine jewelry fabrication. They are classified under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Garnet Rounds

Synthetic garnet rounds are synthetic pyrope/almandine garnets cut into calibrated round beads, not strung, suitable for bezel settings in silver jewelry. These stones are unset and not strung, making them ideal for jewelry manufacturing. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Opal Cabochons

Synthetic opal cabochons are reconstructed silica-based synthetic opals cut into smooth cabochon domes for use in pendants and rings. These stones are unset and not strung, suitable for jewelry applications. They are classified under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Peridot Ovals

Synthetic peridot ovals are lab-grown olivine stones cut into oval cabochons or facets for lime-green jewelry accents. These stones are unset and not strung, suitable for settings. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Sapphire Faceted Ovals

Synthetic sapphire faceted ovals are lab-grown corundum stones precisely cut into oval shapes with multiple facets for light dispersion. These stones are unset and ready for jewelry settings, not strung or mounted. They are classified under tariff item 7104.99.00 as synthetic precious stones, worked but not mounted, set, or strung.

Synthetic Spinel Trilliant Cuts

Synthetic spinel trilliant cuts are flame-fusion synthetic spinel stones cut in triangular trilliant faceting for vibrant color dispersion. These stones are unset and not strung, ideal for earrings and pendants. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Topaz Pear Shapes

Synthetic topaz pear shapes are synthetic quartz-based topaz stones cut into elegant pear or dangle shapes for drop earrings and necklaces. These stones are highly polished but not set or strung. They are classified under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.

Synthetic Tourmaline Facets

Synthetic tourmaline facets are hydrothermal synthetic tourmaline stones cut into precision facets showcasing pleochroism, ideal for multi-color jewelry. These stones are not set or strung. They fall under tariff item 7104.99.00 as synthetic semi-precious stones, worked but not mounted, set, or strung.