CaratHunter
Plans
Cushion|Lab Grown|IGI

4.26ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821638856

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821638856

Diamond specifications and retailer prices

From $6,392 AUD
$4,490 USD
As of October 31, 2026
Save $30,209 AUD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $36,601 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.26ct lab-grown cushion diamond

This 4.26ct 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 LG821638856 or 821638856. Listed at 9 retailers as of October 31, 2026, with prices from $6,392 to $36,601, a $30,209 spread on the same certified stone. Do Amore Diamonds lists it at $36,601. 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

4.26
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638856
Dimensions10.53 × 8.69 × 5.90 mm
L/W Ratio1.21
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
10.53 mm8.69 mm4.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638856
Side View
Table 59.0%Crown 34.9°Girdle: STK-THKPavilion 36.3°Culet: NoneDepth 67.9%

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 31
Current: $36,601 AUD|Low: $6,299 AUD|High: $48,763 AUD|Avg: $19,575 AUD|-2.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$6,392 AUD
Retailer 4$6,758 AUD
Retailer 7$7,125 AUD
Retailer 8$9,629 AUD
Retailer 2$11,685 AUD
Retailer 6$14,180 AUD
Retailer 9$14,851 AUD
Retailer 3$18,792 AUD
Do Amore Diamonds$36,601 AUD
Retailer 10$42,035 AUD

29 data points across 10 retailers

9 retailers$6,392 AUD to $36,601 AUD

A
Cheapest Retailer
-
$6,392 AUD
$4,490 USD
A
Retailer 2
-
$6,412 AUD
$4,504 USD
View
A
Retailer 3
-
$6,758 AUD
$4,747 USD
View
A
Retailer 4
-
$9,629 AUD
$6,764 USD
View
A
Retailer 5
-
$11,685 AUD
€7,817 EUR
View
B+
Retailer 6
-
$14,180 AUD
£7,843 GBP
View
Retailer 7
-
$14,851 AUD
$10,432 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
$18,792 AUD
$13,200 USD
View
Most Expensive
B
Do Amore Diamonds
27-1D4304903 · Oct 31
$36,601 AUD
$25,710 USD
View
8 more retailers have this diamond
Prices start from $6,392 AUDSave up to $30,209 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
4.26ct Cushion
$6,392 AUD