The collection
11 ct crystal white tourmaline (achroite), cushion, on grey cloth
Photograph

11 ct, 12.60 × 11.91 × 10.80 mm, cushion fine step cut.

CWG1040 Achroite (white tourmaline)

11 ct Crystal White Tourmaline (Achroite), Cushion

A crystal white achroite from Mozambique, the colourless tourmaline, 11 carats, loupe clean and untreated, in a cushion fine step cut.

$2,200$200 per carat 11 ct

Free express shipping worldwide Certification and shipping

Optional. An independent laboratory examines the stone before it ships. Sold on our full written disclosure either way.
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  • Natural
  • No treatment
  • Loupe clean (IF)
  • Mozambique
SKU
CWG1040
Variety
Achroite (white tourmaline)
Colour
Colourless, crystal white
Weight
11 ct
Dimensions
12.60 × 11.91 × 10.80 mm
Shape
Cushion
Cut
Fine step cut
Clarity
Loupe clean (IF)
Origin
Mozambique
Treatment
None. No heat, no treatment
ClarityIF
  1. IF
  2. VVS
  3. VS
  4. SI-1
  5. SI-2
  6. I
  7. TS
  8. O

This 11 ct achroite (white tourmaline) is graded IF. Internally flawless: loupe clean: no inclusions can be seen even under a 10x loupe.

The cut

Fine step cut

Top view
12.60 mm10.80
Side profile

A step cut with more, narrower rows of facets. The extra steps give the long, clean flashes of a step cut with a livelier, more layered glow, and they hold colour evenly across the stone.

  • More rows of narrower steps
  • Richer, layered flashes
  • Even colour from edge to edge
Enquire about CWG1040Opens WhatsApp to +66997975799 with this stone attached. Or email [email protected].

Achroite is the colourless member of the tourmaline family and one of its rarest. This cushion is water white and deep, 10.8 mm from table to culet, so it throws bright flashes across the face.

Loupe clean, with no heat and no treatment.

See the original post on Instagram
Before it ships

Certification & shipping

Certification

Optional laboratory report

This 11 ct achroite (white tourmaline) is sold on our own written description, with full disclosure of treatment. If you would like an independent report, choose a laboratory in the certificate menu beside the price and we send the stone before it ships. It is optional, and the 14 day return stands either way.

  • GübelinGübelin Gem Labfrom $400
  • GRSGemResearch Swisslabfrom $120
  • GIAGemological Institute of Americafrom $90
  • BellerophonBellerophon Gemlabfrom $70
  • GuildGuild Gem Laboratoriesfrom $60
  • AIGAmerican International GemLab$15
  • GFCOGFCO Gemological Laboratory$15

AIG and GFCO are a fixed fee. Other laboratories start at the figure shown and depend on the report type. Reports describe the stone independently of us.

Shipping and returns

Free express shipping, worldwide

Shipping toCarrierTypical transitCost
ThailandExpress courier1–2 daysFree
United StatesFedEx or DHL Express2–4 daysFree
Europe and UKFedEx or DHL Express2–5 daysFree
Rest of the worldFedEx or DHL Express3–7 daysFree
  • In the boxThe stone in a gem box, an itemised invoice, and the lab report if you add one.
  • Returns14 days from delivery for a full refund, in its original condition. Return postage is paid by the buyer.
  • Voids a returnThe stone has been set, recut, altered or damaged.

Dispatched within 24 to 48 hours of payment, or once the lab report is back. Full detail in our shipping and returns policy.

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