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Cushion|Lab Grown|IGI

1.51ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG818653037

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG818653037

Diamond specifications and retailer prices

From $356 USD
As of November 1, 2026
Save $1,548 USD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,316 USD at Flawless Fine Jewelry · As of October 6, 2026
View at Flawless Fine Jewelry

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818653037 or 818653037. Listed at 16 retailers as of November 1, 2026, with a 435% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653037
Dimensions7.74 × 6.32 × 3.97 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.74 mm6.32 mm1.51 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653037
Side View
Table 57.0%Crown 34°Girdle: STK-THKPavilion 41.8°Culet: LargeDepth 62.8%

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: Nov 1
Current: $2,316 USD|Low: $342 USD|High: $3,181 USD|Avg: $1,117 USD
Flawless Fine Jewelry
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 13$356 USD
Retailer 3$413 USD
Retailer 7$427 USD
Retailer 14$441 USD
Retailer 15$441 USD
Retailer 4$588 USD
Retailer 5$590 USD
Retailer 10$748 USD
Retailer 2$799 USD
Retailer 11$1,130 USD
Retailer 12$1,294 USD
Retailer 16$1,566 USD
Retailer 8$1,666 USD
Retailer 6$1,719 USD
Retailer 9$1,904 USD
Flawless Fine Jewelry$2,316 USD

41 data points across 16 retailers

16 retailers$356 USD to $1,904 USD

A
Cheapest Retailer
-
$356 USD
A
Retailer 2
-
$413 USD
View
A
Retailer 3
-
$427 USD
View
A
Retailer 4
-
$441 USD
View
Retailer 5
-
$441 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$588 USD
View
A
Retailer 7
-
$590 USD
View
B+
Retailer 8
-
$748 USD
€712 EUR
View
B+
Retailer 9
-
$799 USD
£629 GBP
View
B
Retailer 10
-
$1,130 USD
A$1,739 AUD
View
B
Retailer 11
-
$1,294 USD
View
B
Retailer 12
-
$1,566 USD
View
B
Retailer 13
-
$1,666 USD
View
B
Retailer 14
-
$1,719 USD
View
B
Retailer 15
-
$1,904 USD
£1,499 GBP
View
Most Expensive
Flawless Fine Jewelry
8D433D6BA · Oct 6
$2,316 USD
£1,824 GBP
View
Price last confirmed 26 days ago
15 more retailers have this diamond
Prices start from $356 USDSave up to $1,548 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
$356 USD