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Cushion|Lab Grown|IGI

0.51ct E VVS1 Cushion Lab Grown Diamond

GD • E/VVS1 • IGI LG691513964

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG691513964

Diamond specifications and retailer prices

From $148 USD
As of October 29, 2026
Save $489 USD (77%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $637 USD at Riddles Jewelry · As of October 29, 2026
View at Riddles Jewelry

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 VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG691513964 or 691513964. Listed at 6 retailers as of October 29, 2026, with prices from $148 to $637, a $489 spread on the same certified stone. Riddles Jewelry lists it at $637. 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
Color
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691513964
Dimensions5.56 × 4.04 × 2.77 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.56 mm4.04 mm0.51 ctE / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691513964
Side View
Table 61.0%Crown 35.2°Girdle: MED-THKPavilion 35°Culet: NoneDepth 68.6%

Caratlytics Score

How it works →
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 29
Current: $540 USD|Low: $111 USD|High: $1,240 USD|Avg: $512 USD|+8.1%
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
Retailer 14
Riddles Jewelry
October 19, 2026
Retailer 10$148 USD
Retailer 13$269 USD
Retailer 9$272 USD
Retailer 8$278 USD
Retailer 7$328 USD
Retailer 5$368 USD
Retailer 6$496 USD
Retailer 3$498 USD
Retailer 1$540 USD
Retailer 11$628 USD
Riddles Jewelry$637 USD
Retailer 12$688 USD
Retailer 4$692 USD
Retailer 2$713 USD
Retailer 14$1,240 USD

10 data points across 15 retailers

6 retailers$148 USD to $637 USD

A
Cheapest Retailer
-
$148 USD
Final sale: no returns
B+
Retailer 2
-
$272 USD
View
B+
Retailer 3
-
$278 USD
View
B+
Retailer 4
-
$328 USD
View
B
Retailer 5
-
$540 USD
CA$750 CAD
View
Most Expensive
B
Riddles Jewelry
1966220238 · Oct 29
$637 USD
View
5 more retailers have this diamond
Prices start from $148 USDSave up to $489 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
$148 USD