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Cushion|Lab Grown|IGI

1.51ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG530209300

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG530209300

Diamond specifications and retailer prices

From $210 USD
As of November 6, 2026
Save $944 USD (82%) vs most expensive(unlock to see where)
15 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 top-tier cut grade and certified by IGI LG530209300 or 530209300. Listed at 15 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. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530209300
Dimensions7.50 × 6.06 × 3.90 mm
L/W Ratio1.24
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
7.50 mm6.06 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530209300
Side View
Table 61.5%Crown 38.1°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 64.4%

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: $557 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
November 7, 2026
Retailer 3$210 USD
Retailer 12$233 USD
Retailer 11$315 USD
Retailer 8$382 USD
Retailer 7$416 USD
Retailer 4$465 USD
Retailer 1$534 USD
Retailer 9$556 USD
Retailer 2$566 USD
Retailer 5$861 USD
Retailer 6$1,082 USD
Retailer 10$1,140 USD

44 data points across 12 retailers

15 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
A
Retailer 6
-
$465 USD
View
A
Retailer 7
-
$488 USD
View
A
Retailer 8
-
$534 USD
View
A
Retailer 9
-
$556 USD
View
B+
Retailer 10
-
$566 USD
View
B
Retailer 11
-
$801 USD
View
B+
Retailer 12
-
$861 USD
View
B
Retailer 13
-
$1,082 USD
View
B
Retailer 14
-
$1,140 USD
View
Most Expensive
B
Reve Diamonds
3F0E57951 · Nov 6
$1,154 USD
View
14 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