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Cushion|Lab Grown|IGI

0.51ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG778616981

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

Certificate IGI LG778616981

Diamond specifications and retailer prices

From $251 USD
As of November 1, 2026
Save $1,839 USD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,090 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG778616981 or 778616981. Listed at 18 retailers as of November 1, 2026, with prices from $251 to $2,090, a $1,839 spread on the same certified stone. Do Amore Diamonds lists it at $2,090. 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
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778616981
Dimensions4.51 × 4.46 × 3.10 mm
L/W Ratio1.01
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
4.51 mm4.46 mm0.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778616981
Side View
Table 62.0%Crown 37.4°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 69.5%

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: Nov 1
Current: $2,090 USD|Low: $240 USD|High: $2,090 USD|Avg: $800 USD
Do Amore Diamonds
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
November 2, 2026
Retailer 15$251 USD
Retailer 8$282 USD
Retailer 5$300 USD
Retailer 7$372 USD
Retailer 11$430 USD
Retailer 2$558 USD
Retailer 3$567 USD
Retailer 10$584 USD
Retailer 14$651 USD
Retailer 12$782 USD
Retailer 4$879 USD
Retailer 16$1,160 USD
Retailer 6$1,204 USD
Retailer 9$1,233 USD
Retailer 13$1,272 USD
Do Amore Diamonds$2,090 USD

36 data points across 16 retailers

18 retailers$251 USD to $2,090 USD

Retailer 1
-
$245 USD
Price last confirmed 28 days ago
A
Retailer 2
-
$251 USD
View
Final sale: no returns
A
Retailer 3
-
$282 USD
View
Retailer 4
-
$300 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$372 USD
View
A
Retailer 6
-
$390 USD
View
A
Retailer 7
-
$430 USD
View
B+
Retailer 8
-
$558 USD
ZAR 9,021 ZAR
View
B+
Retailer 9
-
$567 USD
View
B+
Retailer 10
-
$584 USD
€556 EUR
View
B+
Retailer 11
-
$651 USD
A$1,001 AUD
View
B+
Retailer 12
-
$782 USD
A$1,203 AUD
View
B
Retailer 13
-
$879 USD
CA$1,221 CAD
View
B
Retailer 14
-
$1,160 USD
View
Retailer 15
-
$1,204 USD
£948 GBP
View
Price last confirmed 14 days ago
B
Retailer 16
-
$1,233 USD
£971 GBP
View
B
Retailer 17
-
$1,272 USD
View
Most Expensive
B
Do Amore Diamonds
32-LG778616981 · Nov 2
$2,090 USD
View
17 more retailers have this diamond
Prices start from $251 USDSave up to $1,839 USD

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
$251 USD