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Radiant|Lab Grown|IGI

1.87ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG830620119

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

Certificate IGI LG830620119

Diamond specifications and retailer prices

From $1,072 AUD
$753 USD
As of October 29, 2026
Save $5,391 AUD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,463 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.87ct lab-grown radiant diamond

This 1.87ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830620119 or 830620119. Listed at 12 retailers as of October 29, 2026, with prices from $1,072 to $6,463, a $5,391 spread on the same certified stone. Brilliant Earth lists it at $6,463. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620119
Dimensions8.40 × 6.21 × 4.23 mm
L/W Ratio1.35
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
8.40 mm6.21 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620119
Side View
Table 67.0%Crown 40.7°Girdle: ThickPavilion 37.5°Culet: NoneDepth 68.1%

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 29
Current: $6,463 AUD|Low: $1,072 AUD|High: $6,463 AUD|Avg: $2,485 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$1,072 AUD
Retailer 12$1,078 AUD
Retailer 2$1,215 AUD
Retailer 11$1,324 AUD
Retailer 6$1,713 AUD
Retailer 5$1,748 AUD
Retailer 8$2,283 AUD
Retailer 4$3,525 AUD
Retailer 9$3,698 AUD
Retailer 3$3,891 AUD
Retailer 7$4,117 AUD
Brilliant Earth$6,463 AUD

2 data points across 12 retailers

12 retailers$1,072 AUD to $6,463 AUD

A
Cheapest Retailer
-
$1,072 AUD
$753 USD
A
Retailer 2
-
$1,078 AUD
$757 USD
View
Final sale: no returns
A
Retailer 3
-
$1,215 AUD
£672 GBP
View
A
Retailer 4
-
$1,324 AUD
$930 USD
View
A
Retailer 5
-
$1,713 AUD
£947 GBP
View
A
Retailer 6
-
$1,748 AUD
$1,228 USD
View
B+
Retailer 7
-
$2,283 AUD
$1,604 USD
View
B
Retailer 8
-
$3,525 AUD
$2,476 USD
View
B
Retailer 9
-
$3,698 AUD
$2,597 USD
View
B
Retailer 10
-
$3,891 AUD
SGD 3,694 SGD
View
B
Retailer 11
-
$4,117 AUD
$2,892 USD
View
Most Expensive
B
Brilliant Earth
22348624A · Oct 30
$6,463 AUD
$4,540 USD
View
11 more retailers have this diamond
Prices start from $1,072 AUDSave up to $5,391 AUD

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
1.87ct Radiant
$1,072 AUD