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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 $433 NZD
$244 USD
As of October 30, 2026
Save $1,786 NZD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,219 NZD 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 $433 to $2,219, a $1,786 spread on the same certified stone. Reve Diamonds lists it at $2,219. 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

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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 30
Current: $781 NZD|Low: $433 NZD|High: $2,661 NZD|Avg: $1,359 NZD|-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$433 NZD
Retailer 11$488 NZD
Retailer 5$653 NZD
Retailer 4$692 NZD
Retailer 1$781 NZD
Retailer 10$957 NZD
Retailer 6$1,030 NZD
Retailer 13$1,115 NZD
Retailer 2$1,533 NZD
Retailer 12$2,005 NZD
Retailer 7$2,129 NZD
Retailer 9$2,129 NZD
Retailer 8$2,132 NZD
Reve Diamonds$2,219 NZD

24 data points across 14 retailers

14 retailers$433 NZD to $2,219 NZD

A
Cheapest Retailer
-
$433 NZD
$244 USD
Final sale: no returns
A
Retailer 2
-
$488 NZD
$275 USD
View
A
Retailer 3
-
$653 NZD
$368 USD
View
A
Retailer 4
-
$692 NZD
$390 USD
View
A
Retailer 5
-
$781 NZD
$440 USD
View
B+
Retailer 6
-
$957 NZD
ZAR 8,716 ZAR
View
B+
Retailer 7
-
$1,030 NZD
€553 EUR
View
B+
Retailer 8
-
$1,115 NZD
$628 USD
View
B
Retailer 9
-
$1,533 NZD
CA$1,200 CAD
View
B
Retailer 10
-
$2,005 NZD
$1,130 USD
View
B
Retailer 11
-
$2,129 NZD
$1,200 USD
View
B
Retailer 12
-
$2,129 NZD
$1,200 USD
View
B
Retailer 13
-
$2,132 NZD
£946 GBP
View
Most Expensive
B
Reve Diamonds
CCEBE8890 · Oct 30
$2,219 NZD
$1,250 USD
View
13 more retailers have this diamond
Prices start from $433 NZDSave up to $1,786 NZD

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
$433 NZD