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Cushion|Lab Grown|IGI

1.51ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG685536946

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

Certificate IGI LG685536946

Diamond specifications and retailer prices

From $260 USD
As of October 30, 2026
Save $1,370 USD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,630 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG685536946 or 685536946. Listed at 17 retailers as of October 30, 2026, with prices from $260 to $1,630, a $1,370 spread on the same certified stone. Brilliant Earth lists it at $1,630. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685536946
Dimensions6.64 × 6.63 × 4.57 mm
L/W Ratio1.00
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
6.64 mm6.63 mm1.51 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685536946
Side View
Table 60.0%Crown 38.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 68.9%

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: $1,630 USD|Low: $260 USD|High: $1,680 USD|Avg: $761 USD|-3.0%
Brilliant Earth
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
October 30, 2026
Retailer 4$260 USD
Retailer 14$289 USD
Retailer 12$307 USD
Retailer 5$491 USD
Retailer 7$492 USD
Retailer 9$497 USD
Retailer 6$541 USD
Retailer 2$546 USD
Retailer 10$674 USD
Retailer 13$747 USD
Retailer 8$1,165 USD
Retailer 3$1,176 USD
Retailer 11$1,350 USD
Brilliant Earth$1,630 USD

42 data points across 14 retailers

17 retailers$260 USD to $1,630 USD

A
Cheapest Retailer
-
$260 USD
Final sale: no returns
A
Retailer 2
-
$289 USD
View
Retailer 3
-
$307 USD
£242 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
$491 USD
View
A
Retailer 5
-
$492 USD
€469 EUR
View
A
Retailer 6
-
$497 USD
ZAR 8,026 ZAR
View
A
Retailer 7
-
$541 USD
View
A
Retailer 8
-
$546 USD
£430 GBP
View
A
Retailer 9
-
$616 USD
View
A
Retailer 10
-
$674 USD
A$1,037 AUD
View
B+
Retailer 11
-
$747 USD
View
B+
Retailer 12
-
$883 USD
View
B+
Retailer 13
-
$982 USD
View
B+
Retailer 14
-
$1,165 USD
£917 GBP
View
B+
Retailer 15
-
$1,176 USD
View
Retailer 16
-
$1,350 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
14978638A · Oct 30
$1,630 USD
View
16 more retailers have this diamond
Prices start from $260 USDSave up to $1,370 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
1.51ct Cushion
$260 USD