Radiant|Lab Grown|IGI

1.51ct H VVS1 Radiant Lab Grown Diamond

EX • H/VVS1 • IGI LG640490676

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG640490676

Diamond specifications and retailer prices

From $668 USD
£526 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: $668 USD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG640490676 or 640490676. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.6°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640490676
Dimensions8.15 × 5.66 × 3.82 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.15 mm5.66 mm1.51 ctH / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640490676
Side View
Table 64.0%Crown 44.6°Girdle: MediumPavilion 34.8°Culet: NoneDepth 67.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $389 USD|Low: $200 USD|High: $1,314 USD|Avg: $590 USD|-10.3%
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April 19, 2026
Retailer 6$330 USD
Retailer 9$337 USD
Retailer 5$357 USD
Retailer 1$389 USD
Retailer 8$488 USD
Retailer 10$532 USD
Retailer 11$569 USD
Retailer 3$624 USD
Retailer 12$685 USD
Retailer 4$730 USD
Retailer 2$1,097 USD
Retailer 7$1,314 USD

49 data points across 12 retailers

1 retailer

B+
Diamond Quarter
1.51VVS1HLG76B722N · Oct 31
$668 USD
£526 GBP
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B+
1.51ct Radiant
$668 USD