CaratHunter
Plans
Cushion|Lab Grown|IGI

2.51ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG812620732

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

Certificate IGI LG812620732

Diamond specifications and retailer prices

From $1,723 AUD
$1,210 USD
As of October 31, 2026
Save $5,865 AUD (77%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,588 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.51ct lab-grown cushion diamond

This 2.51ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812620732 or 812620732. Listed at 18 retailers as of October 31, 2026, with prices from $1,723 to $7,588, a $5,865 spread on the same certified stone. Brilliant Earth lists it at $7,588. 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

2.51
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620732
Dimensions8.06 × 7.90 × 5.18 mm
L/W Ratio1.02
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
8.06 mm7.90 mm2.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620732
Side View
Table 64.0%Crown 34.8°Girdle: MED-THKPavilion 39.7°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 31
Current: $7,588 AUD|Low: $1,723 AUD|High: $8,855 AUD|Avg: $4,548 AUD|-14.3%
Brilliant Earth
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
Retailer 18
November 1, 2026
Retailer 4$1,723 AUD
Retailer 9$1,923 AUD
Retailer 13$1,993 AUD
Retailer 2$2,587 AUD
Retailer 7$2,688 AUD
Retailer 12$2,843 AUD
Retailer 14$3,373 AUD
Retailer 18$3,755 AUD
Retailer 11$4,239 AUD
Retailer 5$4,601 AUD
Retailer 15$4,606 AUD
Retailer 3$5,171 AUD
Retailer 10$5,315 AUD
Retailer 17$5,702 AUD
Retailer 16$6,087 AUD
Retailer 6$6,239 AUD
Retailer 8$7,018 AUD
Brilliant Earth$7,588 AUD

36 data points across 18 retailers

18 retailers$1,723 AUD to $7,588 AUD

A
Cheapest Retailer
-
$1,723 AUD
$1,210 USD
Final sale: no returns
Retailer 2
-
$1,923 AUD
$1,351 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$1,993 AUD
$1,400 USD
View
A
Retailer 4
-
$2,587 AUD
£1,431 GBP
View
A
Retailer 5
-
$2,688 AUD
$1,888 USD
View
A
Retailer 6
-
$2,843 AUD
€1,902 EUR
View
A
Retailer 7
-
$3,373 AUD
$2,369 USD
View
A
Retailer 8
-
$3,755 AUD
$2,638 USD
View
A
Retailer 9
-
$4,239 AUD
View
A
Retailer 10
-
$4,601 AUD
$3,232 USD
View
A
Retailer 11
-
$4,606 AUD
ZAR 52,273 ZAR
View
B+
Retailer 12
-
$5,171 AUD
$3,632 USD
View
Retailer 13
-
$5,315 AUD
£2,940 GBP
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$5,702 AUD
$4,006 USD
View
B+
Retailer 15
-
$6,087 AUD
£3,367 GBP
View
B+
Retailer 16
-
$6,239 AUD
$4,382 USD
View
Retailer 17
-
$7,018 AUD
$4,930 USD
View
Price last confirmed 13 days ago
Most Expensive
B+
Brilliant Earth
20896257A · Oct 31
$7,588 AUD
$5,330 USD
View
17 more retailers have this diamond
Prices start from $1,723 AUDSave up to $5,865 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
2.51ct Cushion
$1,723 AUD