September 2026 Campaign Details
September Gemstone Gift Campaign Now Open 💎
Depending on your total purchase amount over these 4 days, we will be giving away various gemstones, starting with sapphires—the birthstone for September 🎁
Campaign Period: September 4, 2026 (Fri) 0:00 – September 7, 2026 (Mon) 23:59
――― How to Participate ―――
・Simply purchase any items from the KARATZ STORE during the campaign period to be automatically entered. No special application is required.
・If you make multiple purchases during the period, your gift rank will be determined by your total purchase amount.
――― Notes ―――
・Regular retail items, including books and gemstone encyclopedia 3D stickers, are eligible for the campaign.
・Collaboration items with anime or other works, and "Kara-Free" items are excluded from the campaign.
・For further details and precautions, please see the bottom of this page.
The gift details are as follows:
【Gift ①】
🎁 For all customers who purchase during the campaign 🎁
・Original Microfiber Cloth (Cornflower Blue Sapphire Pattern) x1
※Limited quantity／Subject to change to a different pattern once the limit is reached
Perfect for cleaning jewelry or loose stones, as well as eyeglass or smartphone screens.
※Some gemstones are not suitable for cleaning with this cloth. Please refrain from using it on soft gemstones or those with surface treatments/coatings, or check the care instructions in advance. This cloth does not contain abrasive agents.
【Gift ②】
🎁 For purchases over 3,000 JPY 🎁
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Sri Lankan Blue Sapphire x1
・Sapphire Rough x1
・Amethyst x1
Sapphire is the birthstone for September. We are giving away sapphires from Sri Lanka, famous as a source of high-quality sapphires. The unheated sapphires are cut by Sri Lankan gemstone polisher Mr. Sanje. Look forward to seeing which color and shape you receive. The amethyst features fine cuts that reflect light for a beautiful, watery sparkle.
【Gift ③】
🎁 For purchases over 20,000 JPY 🎁
・Sri Lankan Unheated Sapphire (Mr. Sanje Round Cut) x1
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Sri Lankan (Meetiyagoda) Moonstone OR Sri Lankan (Balangoda) Andesine Labradorite (Mr. Sanje Buff-top Cut) x1
・Sapphire (Diffusion Heated) x1
・Synthetic Star Sapphire (Verneuil or Flux Method) x1
・Tanzanian Windsor Sapphire Rough OR Montana Yogo Sapphire Rough x1
Enjoy the dreamy, softly glowing schiller of the moonstone or andesine labradorite, and the vivid hues of Tanzanian Windsor sapphire rough even in its raw state.
【Gift ④】
🎁 For purchases over 60,000 JPY 🎁
・Pink Sapphire (Emerald Cut) OR Sapphire (Heart Shape) x1
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Multi-Color Sapphire x1
・Blue Sapphire (Cabochon Cut) x1
・Sri Lankan "Glass Body" Sapphire Rough x1
・African Sapphire Rough x1
・Sri Lankan (Uva) Moonstone (Lumina Star Cut) x1
・Madagascan Sapphirine x1
・Sri Lankan Chrysoberyl x1
We are offering a selection including pink sapphires in either an elegant emerald cut or a cute heart shape, Sri Lankan unheated sapphires where even the inclusions are captivating, and "glass body" sapphires known for their gentle, frosted glow and transparency.
【Gift ⑤】
🎁 For purchases over 150,000 JPY 🎁
・Madagascan Sapphire x2
・Bi-color Sapphire x1
・Sri Lankan Star Sapphire x1
・Sri Lankan Silky Sapphire x1
・Tanzanian Windsor Sapphire x1
・Sapphire (Sphere Cut) x1
・Leopard or Cheetah-Pattern Cat-Cut 《KARATZ Collaboration》 (Amber) x1
・Brazilian Mint-Color Montbrasite (Princess Cut, approx. 3.5mm) x1
・Fuchsite in Quartz OR Green Quartz Rough x1
For the bi-color sapphires, we have collected pieces with beautiful gradients and unique color distributions. The unforgettable amber cat-cut is a collaboration piece between Thailand-based jeweler Mr. NOBU and KARATZ.
【Gift ⑥】
🎁 For purchases over 300,000 JPY 🎁
・Royal Blue Sapphire (with Identification Report) OR Sri Lankan Cornflower Blue Sapphire (with Identification Report & Cut by Mr. Sanje) x1
・Padparadscha Sapphire (with Japan German Gem Laboratory Sorting or Identification Report) x1
【Limited Quantity Bonus】
・Kunzite x1 ※Limited to 3 winners
Royal Blue and Cornflower Blue, considered the pinnacle of blue sapphire colors. These sapphires, with colors so deep and beautiful they leave you speechless, come with an identification report. Additionally, we are giving away the lovely Padparadscha sapphire and Kunzite, another of September's birthstones.
【Gift ⑦】
🎁 For purchases over 400,000 JPY 🎁
・Sri Lankan Twin Star Sapphire x1
Because there are so few craftsmen capable of polishing a stone to reveal two stars, this not only highlights the rarity of the raw stone but also the incredible skill required to create such a beautiful twin star. This is a special gift for those who purchase over 400,000 JPY.
That is the entire lineup.
Please refer to the sizes below.
---------------------------------------------------------------------------
💎 Gift Summary 💎
■ All Customers
・Original Microfiber Cloth (Cornflower Blue Sapphire Pattern) x1
※Limited quantity／Subject to change to a different pattern once the limit is reached
■ Over 3,000 JPY (Total of 4 stones + Microfiber Cloth)
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Sri Lankan Blue Sapphire x1
・Sapphire Rough x1
・Amethyst x1
■ Over 20,000 JPY (Total of 6 stones)
・Sri Lankan Unheated Sapphire (Mr. Sanje Round Cut) x1
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Sri Lankan (Meetiyagoda) Moonstone OR Sri Lankan (Balangoda) Andesine Labradorite (Mr. Sanje Buff-top Cut) x1
・Sapphire (Diffusion Heated) x1
・Synthetic Star Sapphire (Verneuil or Flux Method) x1
・Tanzanian Windsor Sapphire Rough x1
■ Over 60,000 JPY (Total of 9 stones)
・Pink Sapphire (Emerald Cut) OR Sapphire (Heart Shape) x1
・Sri Lankan Unheated Sapphire (Cut by Mr. Sanje) x1
・Multi-Color Sapphire x1
・Blue Sapphire (Cabochon Cut) x1
・Sri Lankan "Glass Body" Sapphire Rough x1
・African Sapphire Rough x1
・Sri Lankan (Uva) Moonstone (Lumina Star Cut) x1
・Madagascan Sapphirine x1
・Sri Lankan Chrysoberyl x1
■ Over 150,000 JPY (Total of 10 stones)
・Madagascan Sapphire x2
・Bi-color Sapphire x1
・Sri Lankan Star Sapphire x1
・Sri Lankan Silky Sapphire x1
・Tanzanian Windsor Sapphire x1
・Sapphire (Sphere Cut) x1
・Leopard or Cheetah-Pattern Cat-Cut 《KARATZ Collaboration》 (Amber) x1
・Brazilian Mint-Color Montbrasite (Princess Cut, approx. 3.5mm) x1
・Fuchsite in Quartz OR Green Quartz Rough x1
■ Over 300,000 JPY (Total of 2 stones + Limited Quantity Bonus)
・Royal Blue Sapphire (with Identification Report) OR Sri Lankan Cornflower Blue Sapphire (with Identification Report & Cut by Mr. Sanje) x1
・Padparadscha Sapphire (with JGGL Sorting or Identification Report) x1
【Limited Quantity Bonus】
・Kunzite x1 ※Limited to 3 winners
■ Over 400,000 JPY In addition to the bonus above for over 300,000 JPY:
・Sri Lankan Twin Star Sapphire x1
----------------------------------------------------------------------------
■□■ Precautions ■□■
・The campaign period is September 4, 2026 (Fri) 0:00 – September 7, 2026 (Mon) 23:59.
・Items purchased during the period will be shipped sequentially starting around September 10 (Thu), but please note that shipping may be delayed compared to normal operations. Also, we are closed for shipping on weekends and holidays. Thank you for your understanding. We hope you look forward to receiving your items.
・Gifts are selected at our discretion. We cannot accept requests for specific stones. Please note.
・Photos of gift items are examples only.
・Cuts and colors of gift items are subject to change without notice.
・No quality guarantee certificate is included for gift items.
・Gift items undergo a spot check for identification.
・Gift items will be shipped together with your purchased products. (Pre-order items, custom-made jewelry, etc., will be shipped separately.)
・If set discounts or coupons are used, the total purchase amount will be the price after discounts.