Radiant|Lab Grown|IGI

1.54ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG666407681

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

Certificate IGI LG666407681

Diamond specifications and retailer prices

From $798 USD
£628 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $798 USD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.54ct lab-grown radiant diamond

This 1.54ct 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 LG666407681 or 666407681. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.54
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666407681
Dimensions8.03 × 5.70 × 3.77 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.03 mm5.70 mm1.54 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666407681
Side View
Table 67.0%Crown 43.3°Girdle: STK-THKPavilion 34.7°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $452 USD|Low: $269 USD|High: $956 USD|Avg: $586 USD|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
April 7, 2026
Retailer 5$269 USD
Retailer 2$334 USD
Retailer 1$452 USD
Retailer 3$625 USD
Retailer 4$773 USD
Retailer 6$956 USD

13 data points across 6 retailers

1 retailer

B
Diamond Quarter
1.54SI1ELG8153BAN · Oct 29
$798 USD
£628 GBP
View

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
1.54ct Radiant
$798 USD