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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 $349 CAD
$250 USD
As of November 2, 2026
Save $1,750 CAD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,354 CAD at Do Amore Diamonds · As of November 2, 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 November 2, 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,354 CAD|Low: $335 CAD|High: $3,354 CAD|Avg: $1,104 CAD
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
November 2, 2026
Retailer 18$349 CAD
Retailer 5$390 CAD
Retailer 16$405 CAD
Retailer 3$433 CAD
Retailer 17$433 CAD
Retailer 10$510 CAD
Retailer 2$599 CAD
Retailer 7$725 CAD
Retailer 8$764 CAD
Retailer 11$824 CAD
Retailer 14$832 CAD
Retailer 15$1,330 CAD
Retailer 4$1,523 CAD
Retailer 6$1,537 CAD
Retailer 9$1,853 CAD
Retailer 12$1,915 CAD
Retailer 13$2,099 CAD
Do Amore Diamonds$3,354 CAD

36 data points across 18 retailers

20 retailers$349 CAD to $2,099 CAD

A
Cheapest Retailer
-
$349 CAD
$250 USD
A
Retailer 2
-
$390 CAD
$279 USD
View
Final sale: no returns
A
Retailer 3
-
$405 CAD
$290 USD
View
Retailer 4
-
$433 CAD
$310 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$433 CAD
$310 USD
View
A
Retailer 6
-
$510 CAD
$365 USD
View
A
Retailer 7
-
$599 CAD
£337 GBP
View
A
Retailer 8
-
$725 CAD
$519 USD
View
B+
Retailer 9
-
$764 CAD
$547 USD
View
B+
Retailer 10
-
$824 CAD
ZAR 9,530 ZAR
View
Retailer 11
-
$832 CAD
$595 USD
View
Price last confirmed 13 days ago
B
Retailer 12
-
$1,216 CAD
£685 GBP
View
B
Retailer 13
-
$1,330 CAD
$952 USD
View
B
Retailer 14
-
$1,523 CAD
$1,090 USD
View
B
Retailer 15
-
$1,537 CAD
$1,100 USD
View
B
Retailer 16
-
$1,771 CAD
$1,267 USD
View
B
Retailer 17
-
$1,853 CAD
£1,044 GBP
View
B
Retailer 18
-
$1,915 CAD
£1,079 GBP
View
B
Retailer 19
-
$2,099 CAD
View
Most Expensive
Do Amore Diamonds
27-A16030B2B · Nov 2
$3,354 CAD
$2,400 USD
View
Price under review
19 more retailers have this diamond
Prices start from $349 CADSave up to $1,750 CAD

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
$349 CAD