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Cushion|Lab Grown|IGI

12.26ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG625476935

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG625476935

Diamond specifications and retailer prices

From $4,642 NZD
£2,057 GBP
As of November 2, 2026
Save $15,501 NZD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $20,143 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.26ct lab-grown cushion diamond

This 12.26ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG625476935 or 625476935. Listed at 13 retailers as of October 31, 2026, with prices from $4,642 to $20,143, a $15,501 spread on the same certified stone. Taylor and Hart lists it at $20,143. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

12.26
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625476935
Dimensions14.83 × 12.42 × 8.07 mm
L/W Ratio1.19
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.83 mm12.42 mm12.26 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625476935
Side View
Table 62.0%Crown 39.8°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $7,626 NZD|Low: $4,640 NZD|High: $31,849 NZD|Avg: $9,787 NZD|-3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6$4,642 NZD
Retailer 2$5,579 NZD
Retailer 12$5,780 NZD
Retailer 4$6,569 NZD
Retailer 8$7,420 NZD
Retailer 1$7,626 NZD
Retailer 7$7,744 NZD
Retailer 11$8,991 NZD
Retailer 5$9,172 NZD
Retailer 3$16,102 NZD
Retailer 9$17,115 NZD
Retailer 10$18,671 NZD

43 data points across 12 retailers

13 retailers$4,642 NZD to $20,143 NZD

A
Cheapest Retailer
-
$4,642 NZD
£2,057 GBP
A
Retailer 2
-
$5,579 NZD
$3,139 USD
View
Final sale: no returns
Retailer 3
-
$5,780 NZD
$3,252 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$6,569 NZD
$3,696 USD
View
B+
Retailer 5
-
$7,420 NZD
$4,175 USD
View
B+
Retailer 6
-
$7,626 NZD
$4,291 USD
View
B+
Retailer 7
-
$7,744 NZD
£3,431 GBP
View
B+
Retailer 8
-
$8,991 NZD
$5,059 USD
View
B+
Retailer 9
-
$9,172 NZD
€4,915 EUR
View
B
Retailer 10
-
$16,102 NZD
$9,060 USD
View
B
Retailer 11
-
$17,115 NZD
$9,630 USD
View
B
Retailer 12
-
$18,671 NZD
$10,505 USD
View
Most Expensive
B
Taylor and Hart
4LSIRYH · Oct 31
$20,143 NZD
$11,333 USD
View
12 more retailers have this diamond
Prices start from $4,642 NZDSave up to $15,501 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
12.26ct Cushion
$4,642 NZD