Radiant|Lab Grown|IGI

1.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG510196409

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

Certificate IGI LG510196409

Diamond specifications and retailer prices

From €224 EUR
$250 USD
As of October 30, 2026
Save €1,121 EUR (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €2,148 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG510196409 or 510196409. Listed at 20 retailers as of October 30, 2026, with a 501% 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

1.21
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510196409
Dimensions7.97 × 5.25 × 3.46 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.97 mm5.25 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510196409
Side View
Table 65.0%Crown 42.5°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 65.9%

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 30
Current: €2,148 EUR|Low: €215 EUR|High: €2,148 EUR|Avg: €714 EUR
Do Amore Diamonds
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
Retailer 19
November 1, 2026
Retailer 19€224 EUR
Retailer 5€250 EUR
Retailer 17€260 EUR
Retailer 3€277 EUR
Retailer 18€277 EUR
Retailer 10€327 EUR
Retailer 12€383 EUR
Retailer 7€465 EUR
Retailer 8€490 EUR
Retailer 13€526 EUR
Retailer 15€533 EUR
Retailer 11€821 EUR
Retailer 16€852 EUR
Retailer 4€976 EUR
Retailer 6€985 EUR
Retailer 9€1,187 EUR
Retailer 2€1,227 EUR
Retailer 14€1,344 EUR
Do Amore Diamonds€2,148 EUR

36 data points across 19 retailers

20 retailers€224 EUR to €1,344 EUR

A
Cheapest Retailer
-
€224 EUR
$250 USD
A
Retailer 2
-
€250 EUR
$279 USD
View
Final sale: no returns
A
Retailer 3
-
€260 EUR
$290 USD
View
Retailer 4
-
€277 EUR
$310 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
€277 EUR
$310 USD
View
A
Retailer 6
-
€327 EUR
$365 USD
View
A
Retailer 7
-
€383 EUR
£337 GBP
View
A
Retailer 8
-
€465 EUR
$519 USD
View
B+
Retailer 9
-
€490 EUR
$547 USD
View
B+
Retailer 10
-
€526 EUR
ZAR 9,496 ZAR
View
Retailer 11
-
€533 EUR
$595 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
€779 EUR
£685 GBP
View
B
Retailer 13
-
€852 EUR
$952 USD
View
B
Retailer 14
-
€976 EUR
$1,090 USD
View
B
Retailer 15
-
€985 EUR
$1,100 USD
View
B
Retailer 16
-
€1,134 EUR
$1,267 USD
View
B
Retailer 17
-
€1,187 EUR
£1,044 GBP
View
B
Retailer 18
-
€1,227 EUR
£1,079 GBP
View
B
Retailer 19
-
€1,344 EUR
CA$2,086 CAD
View
Most Expensive
Do Amore Diamonds
27-A16030B2B · Oct 31
€2,148 EUR
$2,400 USD
View
Price under review
19 more retailers have this diamond
Prices start from €224 EURSave up to €1,121 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
1.21ct Radiant
€224 EUR