Radiant|Lab Grown|IGI

1.73ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG530214397

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

Certificate IGI LG530214397

Diamond specifications and retailer prices

From $217 USD
As of October 27, 2026
Save $699 USD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,165 USD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 very-good cut grade and certified by IGI LG530214397 or 530214397. Listed at 16 retailers as of October 27, 2026, with a 322% 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
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530214397
Dimensions8.32 × 5.98 × 4.13 mm
L/W Ratio1.39
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
8.32 mm5.98 mm1.73 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530214397
Side View
Table 65.5%Crown 43.6°Girdle: MediumPavilion 36.2°Culet: NoneDepth 69.1%

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: $1,165 USD|Low: $217 USD|High: $1,185 USD|Avg: $593 USD|-1.7%
Rare Carat
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 15$217 USD
Retailer 3$243 USD
Retailer 13$251 USD
Retailer 8$269 USD
Retailer 9$346 USD
Retailer 12$362 USD
Retailer 2$497 USD
Retailer 5$501 USD
Retailer 10$532 USD
Retailer 14$576 USD
Retailer 11$863 USD
Retailer 7$898 USD
Retailer 4$916 USD
Retailer 6$1,121 USD
Rare Carat$1,165 USD

41 data points across 15 retailers

16 retailers$217 USD to $916 USD

A
Cheapest Retailer
-
$217 USD
A
Retailer 2
-
$243 USD
View
Final sale: no returns
A
Retailer 3
-
$251 USD
View
A
Retailer 4
-
$269 USD
View
A
Retailer 5
-
$278 USD
View
A
Retailer 6
-
$346 USD
£272 GBP
View
B+
Retailer 7
-
$362 USD
View
A
Retailer 8
-
$497 USD
£391 GBP
View
B+
Retailer 9
-
$501 USD
€477 EUR
View
B+
Retailer 10
-
$532 USD
View
B+
Retailer 11
-
$576 USD
View
B+
Retailer 12
-
$863 USD
View
B
Retailer 13
-
$898 USD
View
B
Retailer 14
-
$916 USD
View
B
Retailer 15
-
$1,121 USD
£883 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Rare Carat
KG108-45A · Oct 18
$1,165 USD
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from $217 USDSave up to $699 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
$217 USD