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Round|Lab Grown|IGI

1.00ct J VVS1 Round Lab Grown Diamond

ID • J/VVS1 • IGI LG821638240

Shape and cutting style on the report: Round brilliant

Certificate IGI LG821638240

Diamond specifications and retailer prices

From €120 EUR
$134 USD
As of October 29, 2026
Save €1,126 EUR (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,246 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG821638240 or 821638240. Listed at 14 retailers as of October 26, 2026, with prices from €120 to €1,246, a €1,126 spread on the same certified stone. MOH London lists it at €1,246. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
J
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638240
Dimensions6.43 × 6.39 × 3.89 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II Light Blue
Top View
6.43 mm6.39 mm1.00 ctJ / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638240
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.7%

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: Oct 29
Current: €1,246 EUR|Low: €120 EUR|High: €1,260 EUR|Avg: €394 EUR|+0.1%
MOH London
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
October 27, 2026
Retailer 12€120 EUR
Retailer 14€134 EUR
Retailer 11€140 EUR
Retailer 8€149 EUR
Retailer 13€149 EUR
Retailer 7€179 EUR
Retailer 3€208 EUR
Retailer 2€256 EUR
Retailer 4€369 EUR
Retailer 5€427 EUR
Retailer 10€479 EUR
Retailer 9€507 EUR
Retailer 6€529 EUR
MOH London€1,246 EUR

19 data points across 14 retailers

14 retailers€120 EUR to €1,246 EUR

A
Cheapest Retailer
-
€120 EUR
$134 USD
A
Retailer 2
-
€134 EUR
$150 USD
View
Final sale: no returns
A
Retailer 3
-
€140 EUR
$156 USD
View
A
Retailer 4
-
€149 EUR
$167 USD
View
A
Retailer 5
-
€149 EUR
$167 USD
View
Retailer 6
-
€179 EUR
£158 GBP
View
Price last confirmed 14 days ago
B+
Retailer 7
-
€208 EUR
$232 USD
View
A
Retailer 8
-
€256 EUR
ZAR 4,619 ZAR
View
A
Retailer 9
-
€369 EUR
$412 USD
View
A
Retailer 10
-
€427 EUR
$477 USD
View
A
Retailer 11
-
€479 EUR
$535 USD
View
B+
Retailer 12
-
€507 EUR
$566 USD
View
A
Retailer 13
-
€529 EUR
$591 USD
View
Most Expensive
B
MOH London
LG821638240 · Oct 26
€1,246 EUR
£1,096 GBP
View
13 more retailers have this diamond
Prices start from €120 EURSave up to €1,126 EUR

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
1.00ct Round
€120 EUR