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Cushion|Lab Grown|IGI

4.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811627555

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811627555

Diamond specifications and retailer prices

From $8,536 NZD
$4,811 USD
As of October 30, 2026
Save $23,740 NZD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $32,276 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.18ct lab-grown cushion diamond

This 4.18ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811627555 or 811627555. Listed at 13 retailers as of October 30, 2026, with prices from $8,536 to $32,276, a $23,740 spread on the same certified stone. Taylor and Hart lists it at $32,276. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle29.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811627555
Dimensions11.02 × 8.26 × 5.29 mm
L/W Ratio1.33
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.02 mm8.26 mm4.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811627555
Side View
Table 63.0%Crown 31.3°Girdle: STK-VTKPavilion 29.1°Culet: NoneDepth 64.0%

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: Oct 30
Current: $11,732 NZD|Low: $7,363 NZD|High: $38,184 NZD|Avg: $16,816 NZD|-13.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 12$8,536 NZD
Retailer 2$8,737 NZD
Retailer 4$9,049 NZD
Retailer 7$9,120 NZD
Retailer 8$10,855 NZD
Retailer 1$11,732 NZD
Retailer 3$12,736 NZD
Retailer 9$14,001 NZD
Retailer 11$16,929 NZD
Retailer 6$18,836 NZD
Retailer 5$19,257 NZD
Retailer 10$25,142 NZD
Taylor and Hart$32,276 NZD

41 data points across 13 retailers

13 retailers$8,536 NZD to $32,276 NZD

A
Cheapest Retailer
-
$8,536 NZD
$4,811 USD
A
Retailer 2
-
$8,737 NZD
$4,924 USD
View
Final sale: no returns
Retailer 3
-
$9,049 NZD
$5,100 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$9,120 NZD
$5,140 USD
View
A
Retailer 5
-
$10,855 NZD
$6,118 USD
View
A
Retailer 6
-
$11,732 NZD
£5,207 GBP
View
A
Retailer 7
-
$12,736 NZD
£5,652 GBP
View
A
Retailer 8
-
$14,001 NZD
$7,891 USD
View
B+
Retailer 9
-
$16,929 NZD
$9,541 USD
View
B+
Retailer 10
-
$18,836 NZD
£8,359 GBP
View
B+
Retailer 11
-
$19,257 NZD
ZAR 175,337 ZAR
View
B+
Retailer 12
-
$25,142 NZD
$14,170 USD
View
Most Expensive
B
Taylor and Hart
5RC8QBX · Oct 31
$32,276 NZD
$18,191 USD
View
12 more retailers have this diamond
Prices start from $8,536 NZDSave up to $23,740 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
4.18ct Cushion
$8,536 NZD