The collection
22.75 ct royal blue tanzanite, Asscher cut, on a white card
Photograph

22.75 ct, 17.30 × 17.27 × 9.38 mm, square asscher cut.

CWG1003 Tanzanite

22.75 ct Royal Blue Tanzanite, Asscher Cut

A 22.75 carat tanzanite of deep royal blue from Arusha, Tanzania, cut as an almost perfect square in the Asscher style.

$7,962.50$350 per carat 22.75 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
  • Heated
  • Loupe clean (IF)
  • Tanzania
SKU
CWG1003
Variety
Tanzanite
Colour
Royal blue with violet flashes
Weight
22.75 ct
Dimensions
17.30 × 17.27 × 9.38 mm
Shape
Square
Cut
Asscher cut
Clarity
Loupe clean (IF)
Origin
Tanzania
Treatment
Heated
ClarityIF
  1. IF
  2. VVS
  3. VS
  4. SI-1
  5. SI-2
  6. I
  7. TS
  8. O

This 22.75 ct tanzanite is graded IF. Internally flawless: loupe clean: no inclusions can be seen even under a 10x loupe.

The cut

Asscher cut

Top view
17.30 mm9.38
Side profile

A square step cut with cropped corners, a tall crown and a small table. The deep, stepped facets set up a hall of mirrors that pulls the colour inward and holds it.

  • Square outline, cropped corners
  • Tall crown, small table
  • Deep, concentrated colour
Enquire about CWG1003Opens WhatsApp to +66997975799 with this stone attached. Or email [email protected].

At more than 22 carats and over 17 mm across, this is a tanzanite of real presence. The Asscher cut gives it depth and clean, architectural flashes, and the colour holds a saturated royal blue through the whole stone.

Loupe clean. Heated, which is standard for tanzanite and permanent.

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Before it ships

Certification & shipping

Certification

Optional laboratory report

This 22.75 ct tanzanite 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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