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Cushion|Lab Grown|IGI

1.51ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG687559370

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG687559370

Diamond specifications and retailer prices

From $284 USD
As of November 4, 2026
Save $1,247 USD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,531 USD at Taylor and Hart · As of November 4, 2026
View at Taylor and Hart

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG687559370 or 687559370. Listed at 13 retailers as of November 4, 2026, with prices from $284 to $1,531, a $1,247 spread on the same certified stone. Taylor and Hart lists it at $1,531. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687559370
Dimensions6.73 × 6.65 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.73 mm6.65 mm1.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687559370
Side View
Table 57.0%Crown 34.1°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $593 USD|Low: $203 USD|High: $1,920 USD|Avg: $849 USD|+3.5%
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 4, 2026
Retailer 2$284 USD
Retailer 5$493 USD
Retailer 11$495 USD
Retailer 13$526 USD
Retailer 7$543 USD
Retailer 9$564 USD
Retailer 1$593 USD
Retailer 6$736 USD
Retailer 4$1,143 USD
Retailer 3$1,209 USD
Retailer 12$1,238 USD
Retailer 8$1,261 USD
Retailer 10$1,530 USD

43 data points across 13 retailers

13 retailers$284 USD to $1,531 USD

A
Cheapest Retailer
-
$284 USD
Final sale: no returns
A
Retailer 2
-
$493 USD
View
A
Retailer 3
-
$495 USD
View
A
Retailer 4
-
$526 USD
View
A
Retailer 5
-
$543 USD
View
A
Retailer 6
-
$564 USD
View
A
Retailer 7
-
$593 USD
View
B+
Retailer 8
-
$736 USD
View
B
Retailer 9
-
$1,209 USD
View
B
Retailer 10
-
$1,238 USD
View
B
Retailer 11
-
$1,261 USD
View
B
Retailer 12
-
$1,530 USD
View
Most Expensive
B
Taylor and Hart
I6J3AV6 · Nov 4
$1,531 USD
View
12 more retailers have this diamond
Prices start from $284 USDSave up to $1,247 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
$284 USD