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Radiant|Lab Grown|IGI

1.73ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG508155765

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

Certificate IGI LG508155765

Diamond specifications and retailer prices

From $1,036 CAD
$742 USD
As of October 24, 2026
Save $2,069 CAD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,676 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.73ct lab-grown radiant diamond

This 1.73ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG508155765 or 508155765. Listed at 13 retailers as of October 24, 2026, with a 200% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.73
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508155765
Dimensions7.73 × 5.93 × 4.09 mm
L/W Ratio1.30
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
7.73 mm5.93 mm1.73 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508155765
Side View
Table 66.0%Crown 46.3°Girdle: Slightly ThickPavilion 29.9°Culet: NoneDepth 69.0%

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 24
Current: $4,676 CAD|Low: $761 CAD|High: $4,714 CAD|Avg: $1,897 CAD|+0.5%
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
October 30, 2026
Retailer 10$953 CAD
Retailer 3$1,036 CAD
Retailer 4$1,066 CAD
Retailer 5$1,097 CAD
Retailer 11$1,105 CAD
Retailer 6$1,355 CAD
Retailer 8$1,706 CAD
Retailer 2$1,768 CAD
Retailer 13$1,796 CAD
Retailer 7$2,214 CAD
Retailer 9$2,820 CAD
Retailer 12$3,105 CAD
MOH London$4,676 CAD

43 data points across 13 retailers

13 retailers$1,036 CAD to $3,105 CAD

Retailer 1
-
$953 CAD
$682 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
$1,036 CAD
$742 USD
View
B
Retailer 3
-
$1,066 CAD
$763 USD
View
Final sale: no returns
B
Retailer 4
-
$1,097 CAD
$785 USD
View
B
Retailer 5
-
$1,105 CAD
$791 USD
View
B
Retailer 6
-
$1,355 CAD
$970 USD
View
Retailer 7
-
$1,706 CAD
€1,163 EUR
View
Price last confirmed 7 days ago
B
Retailer 8
-
$1,768 CAD
£997 GBP
View
B
Retailer 9
-
$1,796 CAD
$1,286 USD
View
B
Retailer 10
-
$2,214 CAD
$1,585 USD
View
C
Retailer 11
-
$2,820 CAD
$2,019 USD
View
C
Retailer 12
-
$3,105 CAD
$2,223 USD
View
Most Expensive
MOH London
LG508155765 · Oct 29
$4,676 CAD
£2,636 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $1,036 CADSave up to $2,069 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.

B+
1.73ct Radiant
$1,036 CAD