Radiant|Lab Grown|IGI

1.87ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG818681524

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

Certificate IGI LG818681524

Diamond specifications and retailer prices

From $940 USD
As of October 29, 2026
Save $5,000 USD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,940 USD at Brilliant Earth · As of October 29, 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 LG818681524 or 818681524. Listed at 13 retailers as of October 29, 2026, with prices from $940 to $5,940, a $5,000 spread on the same certified stone. Brilliant Earth lists it at $5,940. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681524
Dimensions8.70 × 6.23 × 4.11 mm
L/W Ratio1.40
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
8.70 mm6.23 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681524
Side View
Table 61.0%Crown 42.8°Girdle: MediumPavilion 34°Culet: NoneDepth 66.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $5,940 USD|Low: $870 USD|High: $6,190 USD|Avg: $2,792 USD|-4.0%
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 29, 2026
Retailer 6$940 USD
Retailer 7$1,204 USD
Retailer 10$1,270 USD
Retailer 11$1,347 USD
Retailer 5$1,372 USD
Retailer 9$1,882 USD
Retailer 3$2,761 USD
Retailer 4$3,038 USD
Retailer 2$3,211 USD
Retailer 12$4,590 USD
Retailer 8$5,640 USD
Brilliant Earth$5,940 USD

25 data points across 12 retailers

13 retailers$940 USD to $5,940 USD

Retailer 1
-
$685 USD
Price last confirmed 13 days ago
Retailer 2
-
$745 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$940 USD
View
A
Retailer 4
-
$1,204 USD
View
A
Retailer 5
-
$1,235 USD
View
A
Retailer 6
-
$1,270 USD
View
B+
Retailer 7
-
$1,882 USD
View
Retailer 8
-
$2,234 USD
View
Price last confirmed 13 days ago
Retailer 9
-
$2,761 USD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
$3,211 USD
£2,528 GBP
View
Retailer 11
-
$4,590 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$5,640 USD
View
Most Expensive
B
Brilliant Earth
22257905Y · Oct 29
$5,940 USD
View
12 more retailers have this diamond
Prices start from $940 USDSave up to $5,000 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
1.87ct Radiant
$940 USD