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Radiant|Lab Grown|IGI

1.88ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG731591058

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

Certificate IGI LG731591058

Diamond specifications and retailer prices

From $5,581 AUD
$3,920 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $5,581 AUD at Brilliant Earth
View at Brilliant Earth

About this 1.88ct lab-grown radiant diamond

This 1.88ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731591058 or 731591058. Listed at 2 retailers as of October 29, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731591058
Dimensions8.97 × 6.14 × 4.04 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.97 mm6.14 mm1.88 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731591058
Side View
Table 65.0%Crown 41.6°Girdle: MediumPavilion 34.2°Culet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $5,581 AUD|Low: $579 AUD|High: $6,855 AUD|Avg: $2,630 AUD|-3.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 16
August 22, 2026
Retailer 14$579 AUD
Retailer 10$1,083 AUD
Retailer 11$1,277 AUD
Retailer 9$1,361 AUD
Retailer 2$1,438 AUD
Retailer 7$1,576 AUD
Retailer 5$1,633 AUD
Retailer 15$2,080 AUD
Retailer 16$2,252 AUD
Retailer 12$2,452 AUD
Retailer 13$2,937 AUD
Retailer 3$3,113 AUD
Retailer 8$3,481 AUD
Retailer 4$3,660 AUD
Retailer 6$4,194 AUD
Brilliant Earth$5,581 AUD

62 data points across 16 retailers

2 retailers

Retailer 1
-
$3,481 AUD
Price last confirmed 118 days ago
Most Expensive
B
Brilliant Earth
15773941A · Oct 29
$5,581 AUD
$3,920 USD
View
1 more retailer has this diamond

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
1.88ct Radiant
$5,581 AUD