Quartz is the mineral family behind amethyst, citrine and several other trade varieties. Choose the variety and intended use before comparing rough parcels or faceted stones.
Amethyst is purple quartz; citrine ranges from pale yellow to brownish orange. These varieties stay within the quartz collection rather than becoming duplicate mineral families.
Select a specimen to add its color or variety to your request. Confirm appearance and availability with the offered lot.
A closer look before you choose
Identity and durability
Quartz is silicon dioxide with Mohs hardness 7; it can still scratch or chip. Large-crystal varieties include amethyst, citrine, smoky, rose and rock crystal. Fine-grained chalcedony includes agate, carnelian and onyx; jasper is an opaque related material.
Colours and value
Explore purple amethyst, golden citrine, two-colour ametrine, pink rose quartz and included quartz. Rutile needles, black tourmaline or garden-like inclusions create distinctive patterns. Judge the actual composition, clarity and cutting; dense inclusions or the trade name Siberian do not automatically establish superior value or origin.
Sources and provenance
Bolivia’s Anahí deposit is a notable ametrine source; quartz also occurs widely elsewhere. Garden quartz and lodolite are descriptive trade names. A scenic inclusion is not proof of a specific mine. Ask for provenance evidence before paying an origin premium.
Treatments and reports
Much commercial citrine results from heating amethyst; colour alone cannot prove untreated origin. Irradiation, heating, dyes and coatings are used on various quartz materials; green prasiolite may be treated. Hydrothermal synthetic quartz exists. Request clear identity and treatment disclosure, avoiding unsupported market percentages or permanence claims.
Jewellery and meaningful gifts
Large custom cuts work well in pendants and cocktail rings. Amethyst is a February birthstone, citrine a November birthstone, and rose quartz often symbolizes affection. Crystal traditions can carry personal meaning; quartz’s piezoelectric use in technology does not demonstrate healing or bodily energy-balancing effects.
Care and buying checks
Ask for actual-piece photographs, dimensions, treatment details and inclusion close-ups. Choose by appearance and budget rather than guaranteed uniqueness, sustainability or appreciation. Clean with warm soapy water, avoid thermal shock and harsh chemicals, and protect colour-sensitive material from prolonged strong light.
State whether the material is intended for faceting, carving or collecting. Ask about transparency and fractures instead of assuming every rough piece is cutting grade.
More buying details
Ask how color was obtained
Much commercial citrine is heat-treated amethyst. Ask for treatment disclosure on the actual lot; the variety name alone does not establish an untreated color.
Use a clear weight basis
Rough requests can use grams, kilograms or lots; faceted requests can use carats, pieces or lots. A lot count needs its contents described separately.
03 / Price basis
A clear specification before a price.
Prices and availability are confirmed against an actual lot. These request units are not fixed price bands. No approved live selling rates are published for this collection.
A clear specification before a price.
Requested form
Possible quotation unit
Rough
Grams (g) / Kilograms (kg) / Lots
Faceted
Carats (ct) / Pieces / Lots
Specify separately
Size / weight of each stone and total parcel weight; dimensions and piece count.
For a lot, describe its contents in the notes. 1 metric carat = 0.2 g; 1 kg = 1,000 g. A piece or lot has no fixed weight.
USD · Observed 2026-10-29
Gemstone price calculator
Build a budget from dated public asking prices, or enter a supplier’s quoted rate. These calculations are not our selling prices or an appraisal.
This small seller sample is an asking-price comparison, not the whole market. Colour, cut and clarity vary. Treatment and origin are seller claims; laboratory reports have not been independently verified.
Price & availability on request
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Before you choose a lot
Are amethyst and citrine different mineral families?
They are different varieties of quartz. Keep the variety explicit in every lot request and quotation.
Can a kilogram price be used for faceted stones?
Weight units can be converted, but quality and processing costs cannot. Request a separate price for the actual form and selected stones.
What should be confirmed before ordering?
Request actual-lot photographs, identity and treatment information, availability, currency, shipping and tax terms. Origin preferences and report requests need separate confirmation.
Start with a question
Explore another gemstone or follow a buying question to the relevant guide.
Use this checklist for the actual stone or lot. Collection illustrations and general descriptions are not proof of identity, origin or availability.
01
Ask for current photos or video of the identified lot, with dimensions in millimeters, weight and number of pieces.
02
Request written disclosure of natural or laboratory-grown identity, known treatments and any origin claim. Match a report to the actual stone and verify its number with the issuing laboratory.
03
Confirm total price, currency, unit, delivery, taxes, payment and return terms in writing before agreeing.
04
For a Bangkok visit, contact the company first to confirm an appointment and the stones you wish to inspect. Bring your dimensions, budget and report requirements.
Questions that help you choose
Does the same carat weight mean the same size?
No. Carat measures weight: 1 ct = 0.2 g. Different densities, shapes and cutting proportions give different face-up sizes. For a setting, request length × width × depth in millimeters as well as weight; for rough, ask for usable dimensions and visible fractures.
What does a laboratory report establish?
Read the scope and conclusions of that particular report. Identification, treatment findings and origin opinions are different questions. A report is not a price guarantee or proof that a seller currently has the stone. Check that the documented item matches the offer.
References checked 29 October 2026 · GIA · GIA · 2
Prices for these collections are confirmed per lot. A gram, carat, piece or lot rate must match the material being offered. Amber price bands and bulk discounts do not apply automatically to other gemstones.
Read more
Ask the team to confirm availability, treatment disclosures, price currency, shipping and tax terms in the formal quotation.
Explore these collections in ten languages. Your request is prepared in the language you choose.
VickyLuxGems — Turn your ideas into jewelry that feels like you
Try designing your own amber bracelet or necklace with an interactive simulator. Choose bead colors, sizes and arrangements to picture your design before asking about a custom order. Explore Burmese amber through articles and image galleries, find your personal style and create a meaningful gift for someone special.