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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 $386 NZD
$217 USD
As of October 27, 2026
Save $1,245 NZD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,074 NZD 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
Colour
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: $2,074 NZD|Low: $386 NZD|High: $2,110 NZD|Avg: $1,056 NZD|-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$386 NZD
Retailer 3$433 NZD
Retailer 13$447 NZD
Retailer 8$479 NZD
Retailer 9$616 NZD
Retailer 12$645 NZD
Retailer 2$884 NZD
Retailer 5$892 NZD
Retailer 10$947 NZD
Retailer 14$1,026 NZD
Retailer 11$1,537 NZD
Retailer 7$1,599 NZD
Retailer 4$1,631 NZD
Retailer 6$1,997 NZD
Rare Carat$2,074 NZD

41 data points across 15 retailers

16 retailers$386 NZD to $1,631 NZD

A
Cheapest Retailer
-
$386 NZD
$217 USD
A
Retailer 2
-
$433 NZD
$243 USD
View
Final sale: no returns
A
Retailer 3
-
$447 NZD
$251 USD
View
A
Retailer 4
-
$479 NZD
$269 USD
View
A
Retailer 5
-
$495 NZD
$278 USD
View
A
Retailer 6
-
$616 NZD
£272 GBP
View
B+
Retailer 7
-
$645 NZD
$362 USD
View
A
Retailer 8
-
$884 NZD
£391 GBP
View
B+
Retailer 9
-
$892 NZD
€477 EUR
View
B+
Retailer 10
-
$947 NZD
$532 USD
View
B+
Retailer 11
-
$1,026 NZD
$576 USD
View
B+
Retailer 12
-
$1,537 NZD
$863 USD
View
B
Retailer 13
-
$1,599 NZD
$898 USD
View
B
Retailer 14
-
$1,631 NZD
$916 USD
View
B
Retailer 15
-
$1,997 NZD
£883 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Rare Carat
KG108-45A · Oct 18
$2,074 NZD
$1,165 USD
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from $386 NZDSave up to $1,245 NZD

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
$386 NZD