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Cushion|Lab Grown|IGI

4.29ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821641156

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821641156

Diamond specifications and retailer prices

From $6,873 AUD
$4,828 USD
As of October 30, 2026
Save $21,978 AUD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $28,851 AUD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.29ct lab-grown cushion diamond

This 4.29ct 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 LG821641156 or 821641156. Listed at 11 retailers as of October 30, 2026, with prices from $6,873 to $28,851, a $21,978 spread on the same certified stone. With Clarity lists it at $28,851. 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

4.29
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641156
Dimensions10.98 × 8.67 × 5.69 mm
L/W Ratio1.27
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
10.98 mm8.67 mm4.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641156
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.6%

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: $9,065 AUD|Low: $6,873 AUD|High: $39,474 AUD|Avg: $18,192 AUD|-5.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
October 31, 2026
Retailer 3$6,873 AUD
Retailer 1$9,065 AUD
Retailer 7$9,093 AUD
Retailer 5$9,441 AUD
Retailer 8$11,966 AUD
Retailer 2$12,286 AUD
Retailer 9$16,163 AUD
Retailer 4$18,920 AUD
Retailer 10$20,960 AUD
Retailer 6$25,974 AUD
With Clarity$28,851 AUD

41 data points across 11 retailers

11 retailers$6,873 AUD to $28,851 AUD

A
Cheapest Retailer
-
$6,873 AUD
$4,828 USD
A
Retailer 2
-
$9,065 AUD
$6,368 USD
View
A
Retailer 3
-
$9,093 AUD
HK$49,900 HKD
View
A
Retailer 4
-
$9,441 AUD
£5,222 GBP
View
A
Retailer 5
-
$11,966 AUD
€8,005 EUR
View
A
Retailer 6
-
$12,286 AUD
$8,630 USD
View
B+
Retailer 7
-
$16,163 AUD
£8,940 GBP
View
B+
Retailer 8
-
$18,920 AUD
$13,290 USD
View
B+
Retailer 9
-
$20,960 AUD
$14,723 USD
View
B+
Retailer 10
-
$25,974 AUD
$18,245 USD
View
Most Expensive
B
With Clarity
821641156 · Oct 31
$28,851 AUD
$20,266 USD
View
10 more retailers have this diamond
Prices start from $6,873 AUDSave up to $21,978 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
4.29ct Cushion
$6,873 AUD