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Radiant|Lab Grown|IGI

1.73ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG468168401

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

Certificate IGI LG468168401

Diamond specifications and retailer prices

From $186 USD
As of October 27, 2026
Save $1,604 USD (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,790 USD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG468168401 or 468168401. Listed at 12 retailers as of October 27, 2026, with prices from $186 to $1,790, a $1,604 spread on the same certified stone. Do Amore Diamonds lists it at $1,790. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.73
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.9°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG468168401
Dimensions7.57 × 6.08 × 4.17 mm
L/W Ratio1.25
Culet sizeNone
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
7.57 mm6.08 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG468168401
Side View
Table 67.5%Crown 45.9°Girdle: Slightly ThickPavilion 31.9°Culet: NoneDepth 68.6%

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 27
Current: $1,790 USD|Low: $183 USD|High: $1,880 USD|Avg: $750 USD|-4.8%
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
October 29, 2026
Retailer 12$186 USD
Retailer 3$214 USD
Retailer 11$216 USD
Retailer 2$328 USD
Retailer 10$406 USD
Retailer 4$498 USD
Retailer 7$632 USD
Retailer 5$716 USD
Retailer 9$745 USD
Retailer 14$809 USD
Retailer 13$820 USD
Retailer 6$1,166 USD
Retailer 8$1,194 USD
Retailer 15$1,390 USD
Do Amore Diamonds$1,790 USD

37 data points across 15 retailers

12 retailers$186 USD to $1,790 USD

A
Cheapest Retailer
-
$186 USD
A
Retailer 2
-
$214 USD
View
Final sale: no returns
A
Retailer 3
-
$216 USD
View
A
Retailer 4
-
$328 USD
£258 GBP
View
B+
Retailer 5
-
$406 USD
View
B
Retailer 6
-
$745 USD
View
B+
Retailer 7
-
$809 USD
View
B+
Retailer 8
-
$820 USD
View
B
Retailer 9
-
$887 USD
£698 GBP
View
B
Retailer 10
-
$1,194 USD
£940 GBP
View
B
Retailer 11
-
$1,390 USD
View
Most Expensive
B
Do Amore Diamonds
27-E5EA7792C · Oct 28
$1,790 USD
View
11 more retailers have this diamond
Prices start from $186 USDSave up to $1,604 USD

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
1.73ct Radiant
$186 USD