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Cushion|Lab Grown|IGI

4.25ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG689566676

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689566676

Diamond specifications and retailer prices

From $4,429 AUD
$3,111 USD
As of October 29, 2026
Save $25,267 AUD (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $29,696 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.25ct lab-grown cushion diamond

This 4.25ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG689566676 or 689566676. Listed at 20 retailers as of October 29, 2026, with prices from $4,429 to $29,696, a $25,267 spread on the same certified stone. Do Amore Diamonds lists it at $29,696. 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

4.25
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689566676
Dimensions11.03 × 8.75 × 5.63 mm
L/W Ratio1.26
Girdle conditionFaceted
Culet sizePointed
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
11.03 mm8.75 mm4.25 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689566676
Side View
Table 63.0%Crown 34.4°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 64.3%

Caratlytics Score

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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: Oct 29
Current: $4,659 AUD|Low: $4,429 AUD|High: $21,055 AUD|Avg: $10,955 AUD|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 2$4,429 AUD
Retailer 1$4,659 AUD
Retailer 7$5,232 AUD
Retailer 17$6,305 AUD
Retailer 13$6,711 AUD
Retailer 3$8,153 AUD
Retailer 9$8,392 AUD
Retailer 15$8,743 AUD
Retailer 6$9,866 AUD
Retailer 16$10,774 AUD
Retailer 5$11,926 AUD
Retailer 11$12,629 AUD
Retailer 4$14,080 AUD
Retailer 14$17,640 AUD
Retailer 8$17,986 AUD
Retailer 12$18,241 AUD
Retailer 10$18,948 AUD

41 data points across 17 retailers

20 retailers$4,429 AUD to $29,696 AUD

A
Cheapest Retailer
-
$4,429 AUD
$3,111 USD
Final sale: no returns
A
Retailer 2
-
$4,659 AUD
$3,273 USD
View
A
Retailer 3
-
$5,232 AUD
$3,675 USD
View
A
Retailer 4
-
$6,305 AUD
HK$34,600 HKD
View
A
Retailer 5
-
$6,711 AUD
£3,712 GBP
View
A
Retailer 6
-
$6,819 AUD
$4,790 USD
View
A
Retailer 7
-
$8,153 AUD
€5,454 EUR
View
A
Retailer 8
-
$8,392 AUD
$5,895 USD
View
A
Retailer 9
-
$8,743 AUD
£4,836 GBP
View
Retailer 10
-
$9,866 AUD
$6,930 USD
View
Price last confirmed 12 days ago
A
Retailer 11
-
$10,774 AUD
ZAR 122,263 ZAR
View
Retailer 12
-
$11,926 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$12,629 AUD
$8,871 USD
View
B+
Retailer 14
-
$14,080 AUD
£7,788 GBP
View
B+
Retailer 15
-
$14,642 AUD
$10,285 USD
View
B+
Retailer 16
-
$17,640 AUD
$12,391 USD
View
Retailer 17
-
$17,986 AUD
View
Price last confirmed 22 days ago
B+
Retailer 18
-
$18,241 AUD
SGD 17,315 SGD
View
B+
Retailer 19
-
$18,948 AUD
$13,310 USD
View
Most Expensive
B
Do Amore Diamonds
27-CFF249A6B · Oct 29
$29,696 AUD
$20,860 USD
View
19 more retailers have this diamond
Prices start from $4,429 AUDSave up to $25,267 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
4.25ct Cushion
$4,429 AUD