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Radiant|Lab Grown|IGI

1.66ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG468109140

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

Certificate IGI LG468109140

Diamond specifications and retailer prices

From $441 CAD
$316 USD
As of October 30, 2026
Save $3,484 CAD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,925 CAD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.66ct lab-grown radiant diamond

This 1.66ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG468109140 or 468109140. Listed at 10 retailers as of October 30, 2026, with prices from $441 to $3,925, a $3,484 spread on the same certified stone. Do Amore Diamonds lists it at $3,925. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.66
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG468109140
Dimensions8.22 × 5.67 × 3.94 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
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
8.22 mm5.67 mm1.66 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG468109140
Side View
Table 63.5%Crown 38.4°Girdle: MED-STKPavilionCulet: NoneDepth 69.5%

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: Oct 30
Current: $3,925 CAD|Low: $356 CAD|High: $3,925 CAD|Avg: $1,409 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
November 1, 2026
Retailer 8$441 CAD
Retailer 12$495 CAD
Retailer 11$513 CAD
Retailer 4$809 CAD
Retailer 10$890 CAD
Retailer 6$894 CAD
Retailer 13$916 CAD
Retailer 3$1,190 CAD
Retailer 7$1,605 CAD
Retailer 9$1,942 CAD
Retailer 5$2,026 CAD
Retailer 2$2,360 CAD
Do Amore Diamonds$3,925 CAD

13 data points across 13 retailers

10 retailers$441 CAD to $3,925 CAD

A
Cheapest Retailer
-
$441 CAD
$316 USD
A
Retailer 2
-
$495 CAD
$354 USD
View
Final sale: no returns
A
Retailer 3
-
$513 CAD
$367 USD
View
B+
Retailer 4
-
$890 CAD
$637 USD
View
B+
Retailer 5
-
$894 CAD
$640 USD
View
B+
Retailer 6
-
$916 CAD
$656 USD
View
B
Retailer 7
-
$1,605 CAD
$1,149 USD
View
B
Retailer 8
-
$1,942 CAD
$1,390 USD
View
B
Retailer 9
-
$2,360 CAD
£1,330 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0ED26BBBB · Oct 31
$3,925 CAD
$2,810 USD
View
9 more retailers have this diamond
Prices start from $441 CADSave up to $3,484 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
1.66ct Radiant
$441 CAD