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Cushion|Lab Grown|IGI

1.51ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG529262735

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG529262735

Diamond specifications and retailer prices

From $210 USD
As of November 6, 2026
Save $944 USD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,154 USD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG529262735 or 529262735. Listed at 16 retailers as of November 6, 2026, with prices from $210 to $1,154, a $944 spread on the same certified stone. Reve Diamonds lists it at $1,154. 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

1.51
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529262735
Dimensions6.47 × 6.32 × 4.23 mm
L/W Ratio1.02
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
6.47 mm6.32 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529262735
Side View
Table 65.5%Crown 36.7°Girdle: THK-VTKPavilion 33.5°Culet: NoneDepth 66.9%

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: Nov 6
Current: $534 USD|Low: $210 USD|High: $1,250 USD|Avg: $581 USD
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
November 7, 2026
Retailer 4$210 USD
Retailer 2$233 USD
Retailer 12$315 USD
Retailer 9$382 USD
Retailer 8$416 USD
Retailer 5$465 USD
Retailer 1$534 USD
Retailer 10$556 USD
Retailer 3$566 USD
Retailer 6$861 USD
Retailer 13$1,005 USD
Retailer 7$1,082 USD
Retailer 11$1,140 USD

43 data points across 13 retailers

16 retailers$210 USD to $1,154 USD

A
Cheapest Retailer
-
$210 USD
Final sale: no returns
A
Retailer 2
-
$233 USD
View
B+
Retailer 3
-
$315 USD
View
A
Retailer 4
-
$382 USD
View
A
Retailer 5
-
$416 USD
View
B+
Retailer 6
-
$465 USD
View
B+
Retailer 7
-
$488 USD
View
B+
Retailer 8
-
$534 USD
View
B+
Retailer 9
-
$556 USD
View
B+
Retailer 10
-
$566 USD
View
B
Retailer 11
-
$801 USD
View
B
Retailer 12
-
$861 USD
View
Retailer 13
-
$1,005 USD
View
Price last confirmed 17 days ago
B
Retailer 14
-
$1,082 USD
View
B
Retailer 15
-
$1,140 USD
View
Most Expensive
B
Reve Diamonds
8D3494472 · Nov 6
$1,154 USD
View
15 more retailers have this diamond
Prices start from $210 USDSave up to $944 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
$210 USD