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Round|Lab Grown|IGI

1.51ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG778655790

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778655790

Diamond specifications and retailer prices

From $251 USD
As of October 29, 2026
Save $1,369 USD (85%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $1,620 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778655790 or 778655790. Listed at 27 retailers as of October 28, 2026, with prices from $251 to $1,620, a $1,369 spread on the same certified stone. Brilliant Earth lists it at $1,620. 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778655790
Dimensions7.36 × 7.29 × 4.54 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
7.36 mm7.29 mm1.51 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778655790
Side View
Table 62.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.0%

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 29
Current: $1,620 USD|Low: $199 USD|High: $1,760 USD|Avg: $738 USD|-8.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 9$251 USD
Retailer 8$280 USD
Retailer 10$311 USD
Retailer 18$358 USD
Retailer 15$420 USD
Retailer 11$506 USD
Retailer 12$510 USD
Retailer 14$535 USD
Retailer 2$590 USD
Retailer 4$650 USD
Retailer 16$726 USD
Retailer 7$942 USD
Retailer 13$957 USD
Retailer 6$1,001 USD
Retailer 5$1,023 USD
Retailer 3$1,226 USD
Retailer 17$1,255 USD
Brilliant Earth$1,620 USD

43 data points across 18 retailers

27 retailers$251 USD to $1,620 USD

A
Cheapest Retailer
-
$251 USD
A
Retailer 2
-
$251 USD
View
Price last confirmed 37 days ago
A
Retailer 3
-
$280 USD
View
Final sale: no returns
A
Retailer 4
-
$307 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
$311 USD
View
A
Retailer 6
-
$311 USD
View
A
Retailer 7
-
$358 USD
HK$2,800 HKD
View
B+
Retailer 8
-
$420 USD
View
A
Retailer 9
-
$420 USD
View
A
Retailer 10
-
$476 USD
View
A
Retailer 11
-
$506 USD
£398 GBP
View
A
Retailer 12
-
$510 USD
€486 EUR
View
A
Retailer 13
-
$535 USD
ZAR 8,645 ZAR
View
B+
Retailer 14
-
$590 USD
£464 GBP
View
B+
Retailer 15
-
$650 USD
View
B+
Retailer 16
-
$726 USD
A$1,117 AUD
View
B+
Retailer 17
-
$785 USD
View
B
Retailer 18
-
$957 USD
View
B
Retailer 19
-
$961 USD
View
B
Retailer 20
-
$1,001 USD
View
Price last confirmed 38 days ago
B
Retailer 21
-
$1,001 USD
View
B
Retailer 22
-
$1,023 USD
SGD 1,383 SGD
View
B
Retailer 23
-
$1,053 USD
View
B
Retailer 24
-
$1,226 USD
View
B
Retailer 25
-
$1,255 USD
£988 GBP
View
B
Retailer 26
-
$1,357 USD
View
Most Expensive
B
Brilliant Earth
20972774A · Oct 28
$1,620 USD
View
26 more retailers have this diamond
Prices start from $251 USDSave up to $1,369 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 Round
$251 USD