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Cushion|Lab Grown|IGI

4.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811635657

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG811635657

Diamond specifications and retailer prices

From $7,181 NZD
$4,047 USD
As of November 1, 2026
Save $37,620 NZD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $44,801 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG811635657 or 811635657. Listed at 10 retailers as of October 31, 2026, with prices from $7,181 to $44,801, a $37,620 spread on the same certified stone. Do Amore Diamonds lists it at $44,801. 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 angle37.3°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811635657
Dimensions9.22 × 9.20 × 6.22 mm
L/W Ratio1.00
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
9.22 mm9.20 mm4.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811635657
Side View
Table 58.0%Crown 37.3°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
A+
Exceptional
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 1
Current: $44,801 NZD|Low: $7,181 NZD|High: $59,634 NZD|Avg: $24,950 NZD|-21.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 6$7,181 NZD
Retailer 9$7,825 NZD
Retailer 8$8,140 NZD
Retailer 2$11,709 NZD
Retailer 5$14,291 NZD
Retailer 11$14,487 NZD
Retailer 10$17,957 NZD
Retailer 7$22,977 NZD
Retailer 4$23,960 NZD
Retailer 12$35,275 NZD
Do Amore Diamonds$44,801 NZD
Retailer 3$59,634 NZD

29 data points across 12 retailers

10 retailers$7,181 NZD to $44,801 NZD

A+
Cheapest Retailer
-
$7,181 NZD
$4,047 USD
A
Retailer 2
-
$7,825 NZD
$4,410 USD
View
A
Retailer 3
-
$8,140 NZD
$4,588 USD
View
A
Retailer 4
-
$11,709 NZD
$6,599 USD
View
A
Retailer 5
-
$14,291 NZD
€7,671 EUR
View
Retailer 6
-
$14,487 NZD
$8,165 USD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$17,957 NZD
£7,969 GBP
View
B+
Retailer 8
-
$22,977 NZD
$12,950 USD
View
B
Retailer 9
-
$35,275 NZD
$19,881 USD
View
Most Expensive
B
Do Amore Diamonds
27-C916D5FE2 · Oct 31
$44,801 NZD
$25,250 USD
View
9 more retailers have this diamond
Prices start from $7,181 NZDSave up to $37,620 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
$7,181 NZD