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Cushion|Lab Grown|IGI

0.51ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG816658270

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816658270

Diamond specifications and retailer prices

From $347 AUD
$244 USD
As of October 30, 2026
Save $1,433 AUD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,780 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816658270 or 816658270. Listed at 14 retailers as of October 30, 2026, with prices from $347 to $1,780, a $1,433 spread on the same certified stone. Reve Diamonds lists it at $1,780. 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

0.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816658270
Dimensions5.09 × 4.22 × 2.86 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
5.09 mm4.22 mm0.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816658270
Side View
Table 62.0%Crown 33.8°Girdle: MED-THKPavilion 36.8°Culet: NoneDepth 67.8%

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: $626 AUD|Low: $347 AUD|High: $2,135 AUD|Avg: $1,091 AUD|-24.1%
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
Reve Diamonds
October 30, 2026
Retailer 3$347 AUD
Retailer 11$391 AUD
Retailer 5$524 AUD
Retailer 4$555 AUD
Retailer 1$626 AUD
Retailer 10$768 AUD
Retailer 6$827 AUD
Retailer 13$894 AUD
Retailer 2$1,230 AUD
Retailer 12$1,609 AUD
Retailer 7$1,708 AUD
Retailer 9$1,708 AUD
Retailer 8$1,710 AUD
Reve Diamonds$1,780 AUD

24 data points across 14 retailers

14 retailers$347 AUD to $1,780 AUD

A
Cheapest Retailer
-
$347 AUD
$244 USD
Final sale: no returns
A
Retailer 2
-
$391 AUD
$275 USD
View
A
Retailer 3
-
$524 AUD
$368 USD
View
A
Retailer 4
-
$555 AUD
$390 USD
View
A
Retailer 5
-
$626 AUD
$440 USD
View
B+
Retailer 6
-
$768 AUD
ZAR 8,716 ZAR
View
B+
Retailer 7
-
$827 AUD
€553 EUR
View
B+
Retailer 8
-
$894 AUD
$628 USD
View
B
Retailer 9
-
$1,230 AUD
CA$1,200 CAD
View
B
Retailer 10
-
$1,609 AUD
$1,130 USD
View
B
Retailer 11
-
$1,708 AUD
$1,200 USD
View
B
Retailer 12
-
$1,708 AUD
$1,200 USD
View
B
Retailer 13
-
$1,710 AUD
£946 GBP
View
Most Expensive
B
Reve Diamonds
CCEBE8890 · Oct 30
$1,780 AUD
$1,250 USD
View
13 more retailers have this diamond
Prices start from $347 AUDSave up to $1,433 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
0.51ct Cushion
$347 AUD