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Round|Lab Grown|IGI

1.51ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG781631505

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781631505

Diamond specifications and retailer prices

From $208 USD
As of November 3, 2026
Save $892 USD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,100 USD at Brilliant Earth · As of November 4, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG781631505 or 781631505. Listed at 18 retailers as of November 3, 2026, with prices from $208 to $1,100, a $892 spread on the same certified stone. Brilliant Earth lists it at $1,100. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781631505
Dimensions7.39 × 7.37 × 4.50 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.37 mm1.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781631505
Side View
Table 59.0%Crown 32.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

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 3
Current: $1,100 USD|Low: $208 USD|High: $1,260 USD|Avg: $561 USD|-12.7%
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
November 5, 2026
Retailer 8$208 USD
Retailer 4$232 USD
Retailer 3$241 USD
Retailer 16$258 USD
Retailer 9$259 USD
Retailer 11$401 USD
Retailer 5$444 USD
Retailer 15$445 USD
Retailer 10$447 USD
Retailer 18$588 USD
Retailer 14$601 USD
Retailer 13$683 USD
Retailer 12$720 USD
Retailer 17$830 USD
Retailer 6$836 USD
Retailer 7$882 USD
Retailer 2$1,031 USD
Brilliant Earth$1,100 USD

32 data points across 18 retailers

18 retailers$208 USD to $1,100 USD

A
Cheapest Retailer
-
$208 USD
A
Retailer 2
-
$232 USD
View
Final sale: no returns
A
Retailer 3
-
$241 USD
View
A
Retailer 4
-
$258 USD
View
Retailer 5
-
$259 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$401 USD
View
B+
Retailer 7
-
$444 USD
View
A
Retailer 8
-
$445 USD
View
A
Retailer 9
-
$447 USD
View
A
Retailer 10
-
$588 USD
View
A
Retailer 11
-
$601 USD
View
B+
Retailer 12
-
$683 USD
View
B+
Retailer 13
-
$720 USD
View
B+
Retailer 14
-
$830 USD
View
B+
Retailer 15
-
$836 USD
View
B+
Retailer 16
-
$882 USD
View
B+
Retailer 17
-
$1,031 USD
View
Most Expensive
B+
Brilliant Earth
21501944A · Nov 4
$1,100 USD
View
17 more retailers have this diamond
Prices start from $208 USDSave up to $892 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
$208 USD