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Cushion|Lab Grown|IGI

4.12ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG821638855

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821638855

Diamond specifications and retailer prices

From $5,509 AUD
$3,870 USD
As of November 1, 2026
Save $26,223 AUD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $31,732 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.12ct lab-grown cushion diamond

This 4.12ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821638855 or 821638855. Listed at 10 retailers as of October 31, 2026, with prices from $5,509 to $31,732, a $26,223 spread on the same certified stone. Do Amore Diamonds lists it at $31,732. 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

4.12
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638855
Dimensions10.92 × 8.42 × 5.68 mm
L/W Ratio1.30
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
10.92 mm8.42 mm4.12 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638855
Side View
Table 59.0%Crown 33.4°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 67.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $31,732 AUD|Low: $5,573 AUD|High: $46,214 AUD|Avg: $16,488 AUD|-3.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$5,573 AUD
Retailer 7$6,121 AUD
Retailer 5$6,695 AUD
Retailer 8$8,607 AUD
Retailer 2$10,045 AUD
Retailer 10$11,745 AUD
Retailer 11$13,107 AUD
Retailer 9$13,129 AUD
Retailer 4$17,069 AUD
Do Amore Diamonds$31,732 AUD
Retailer 3$37,096 AUD

27 data points across 11 retailers

10 retailers$5,509 AUD to $31,732 AUD

A
Cheapest Retailer
-
$5,509 AUD
$3,870 USD
A
Retailer 2
-
$5,573 AUD
$3,915 USD
View
A
Retailer 3
-
$6,695 AUD
$4,703 USD
View
A
Retailer 4
-
$8,607 AUD
$6,046 USD
View
A
Retailer 5
-
$10,045 AUD
€6,720 EUR
View
Retailer 6
-
$11,745 AUD
$8,250 USD
View
Price last confirmed 17 days ago
Retailer 7
-
$13,107 AUD
$9,207 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
$13,129 AUD
£7,262 GBP
View
B+
Retailer 9
-
$17,069 AUD
$11,990 USD
View
Most Expensive
B
Do Amore Diamonds
27-D7A519999 · Oct 31
$31,732 AUD
$22,290 USD
View
9 more retailers have this diamond
Prices start from $5,509 AUDSave up to $26,223 AUD

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
4.12ct Cushion
$5,509 AUD