Radiant|Lab Grown|IGI

1.00ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG821643185

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

Certificate IGI LG821643185

Diamond specifications and retailer prices

From €499 EUR
$560 USD
As of October 28, 2026
Save €364 EUR (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,597 EUR at Queensmith · As of October 25, 2026
View at Queensmith

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821643185 or 821643185. Listed at 21 retailers as of October 26, 2026, with a 73% 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

1.00
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821643185
Dimensions7.04 × 4.93 × 3.36 mm
L/W Ratio1.43
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
Top View
7.04 mm4.93 mm1.00 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821643185
Side View
Table 66.0%Crown 40.5°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 68.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €449 EUR|Low: €143 EUR|High: €969 EUR|Avg: €417 EUR|-0.9%
Retailer 1
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 26, 2026
Retailer 4€149 EUR
Retailer 2€166 EUR
Retailer 8€172 EUR
Retailer 6€185 EUR
Retailer 9€185 EUR
Retailer 17€247 EUR
Retailer 16€307 EUR
Retailer 14€311 EUR
Retailer 11€316 EUR
Retailer 1€449 EUR
Retailer 10€466 EUR
Retailer 18€485 EUR
Retailer 15€499 EUR
Retailer 13€529 EUR
Retailer 7€592 EUR
Retailer 5€767 EUR
Retailer 12€863 EUR
Retailer 3€969 EUR

37 data points across 18 retailers

21 retailers€499 EUR to €863 EUR

Retailer 1
-
€149 EUR
$167 USD
Price last confirmed 10 days ago
Retailer 2
-
€172 EUR
$193 USD
View
Price last confirmed 9 days ago
Retailer 3
-
€185 EUR
$207 USD
View
Price last confirmed 8 days ago
Retailer 4
-
€185 EUR
$207 USD
View
Price last confirmed 8 days ago
Retailer 5
-
€247 EUR
£218 GBP
View
Price last confirmed 17 days ago
Retailer 6
-
€250 EUR
$280 USD
View
Price last confirmed 8 days ago
Retailer 7
-
€297 EUR
$333 USD
View
Price last confirmed 8 days ago
Retailer 8
-
€307 EUR
View
Price last confirmed 10 days ago
Retailer 9
-
€311 EUR
ZAR 5,642 ZAR
View
Price last confirmed 11 days ago
Retailer 10
-
€316 EUR
£279 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
€449 EUR
A$775 AUD
View
Price last confirmed 7 days ago
Retailer 12
-
€466 EUR
$523 USD
View
Price last confirmed 7 days ago
Retailer 13
-
€485 EUR
$544 USD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
€499 EUR
$560 USD
View
Retailer 15
-
€529 EUR
A$913 AUD
View
Price last confirmed 9 days ago
Retailer 16
-
€592 EUR
$664 USD
View
Price last confirmed 8 days ago
Retailer 17
-
€641 EUR
$719 USD
View
Price last confirmed 8 days ago
B
Retailer 18
-
€767 EUR
$860 USD
View
B
Retailer 19
-
€863 EUR
£762 GBP
View
Retailer 20
-
€969 EUR
$1,087 USD
View
Price last confirmed 8 days ago
Most Expensive
Queensmith
LG821643185 · Oct 25
€1,597 EUR
£1,410 GBP
View
Price under review
20 more retailers have this diamond
Prices start from €499 EURSave up to €364 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.

B+
1.00ct Radiant
€499 EUR