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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG541253650

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG541253650

Diamond specifications and retailer prices

From $368 AUD
As of November 6, 2026
Save $1,491 AUD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,860 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG541253650 or 541253650. Listed at 13 retailers as of November 6, 2026, with prices from $368 to $1,860, a $1,491 spread on the same certified stone. Reve Diamonds lists it at $1,860. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541253650
Dimensions8.09 × 5.78 × 3.97 mm
L/W Ratio1.40
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
8.09 mm5.78 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541253650
Side View
Table 61.0%Crown 32.8°Girdle: MED-THKPavilion 37.9°Culet: NoneDepth 68.7%

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: Nov 6
Current: $867 AUD|Low: $367 AUD|High: $1,860 AUD|Avg: $839 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 7, 2026
Retailer 3$368 AUD
Retailer 4$409 AUD
Retailer 6$522 AUD
Retailer 11$550 AUD
Retailer 8$653 AUD
Retailer 2$674 AUD
Retailer 7$754 AUD
Retailer 10$776 AUD
Retailer 1$867 AUD
Retailer 12$1,388 AUD
Retailer 5$1,474 AUD
Retailer 9$1,632 AUD
Reve Diamonds$1,860 AUD

40 data points across 13 retailers

13 retailers$368 AUD to $1,860 AUD

A
Cheapest Retailer
-
$368 AUD
Final sale: no returns
A
Retailer 2
-
$409 AUD
View
A
Retailer 3
-
$522 AUD
View
B+
Retailer 4
-
$550 AUD
View
A
Retailer 5
-
$653 AUD
View
B+
Retailer 6
-
$674 AUD
View
B+
Retailer 7
-
$754 AUD
View
B+
Retailer 8
-
$776 AUD
View
B+
Retailer 9
-
$867 AUD
View
B
Retailer 10
-
$1,388 AUD
View
B
Retailer 11
-
$1,474 AUD
View
B
Retailer 12
-
$1,632 AUD
View
Most Expensive
B
Reve Diamonds
1DAE62A6A · Nov 6
$1,860 AUD
$1,278 USD
View
12 more retailers have this diamond
Prices start from $368 AUDSave up to $1,491 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
1.51ct Cushion
$368 AUD