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Radiant|Lab Grown|IGI

1.86ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825660146

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

Certificate IGI LG825660146

Diamond specifications and retailer prices

From $646 USD
As of October 30, 2026
Save $3,874 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,520 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.86ct lab-grown radiant diamond

This 1.86ct 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 LG825660146 or 825660146. Listed at 22 retailers as of October 30, 2026, with prices from $646 to $4,520, a $3,874 spread on the same certified stone. Brilliant Earth lists it at $4,520. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660146
Dimensions8.58 × 6.01 × 4.13 mm
L/W Ratio1.43
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
8.58 mm6.01 mm1.86 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660146
Side View
Table 65.0%Crown 45.2°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 68.7%

Caratlytics Score

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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 30
Current: $4,520 USD|Low: $646 USD|High: $5,960 USD|Avg: $2,185 USD|-24.2%
Brilliant Earth
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
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Retailer 21
October 30, 2026
Retailer 11$646 USD
Retailer 19$702 USD
Retailer 10$749 USD
Retailer 7$753 USD
Retailer 15$925 USD
Retailer 21$1,007 USD
Retailer 2$1,197 USD
Retailer 16$1,224 USD
Retailer 3$1,278 USD
Retailer 13$1,376 USD
Retailer 5$1,588 USD
Retailer 4$1,741 USD
Retailer 8$2,106 USD
Retailer 6$2,332 USD
Retailer 18$2,462 USD
Retailer 12$2,584 USD
Retailer 9$2,722 USD
Retailer 17$3,160 USD
Retailer 20$3,835 USD
Brilliant Earth$4,520 USD
Retailer 14$4,520 USD

33 data points across 21 retailers

22 retailers$646 USD to $4,520 USD

A
Cheapest Retailer
-
$646 USD
A
Retailer 2
-
$702 USD
View
A
Retailer 3
-
$749 USD
View
A
Retailer 4
-
$753 USD
View
Final sale: no returns
Retailer 5
-
$799 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$925 USD
View
A
Retailer 7
-
$1,007 USD
View
A
Retailer 8
-
$1,197 USD
£942 GBP
View
A
Retailer 9
-
$1,224 USD
View
Retailer 10
-
$1,278 USD
€1,217 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$1,376 USD
ZAR 22,229 ZAR
View
B+
Retailer 12
-
$1,588 USD
View
B+
Retailer 13
-
$1,741 USD
View
B+
Retailer 14
-
$2,106 USD
View
B+
Retailer 15
-
$2,332 USD
£1,836 GBP
View
B+
Retailer 16
-
$2,462 USD
View
B+
Retailer 17
-
$2,584 USD
View
B+
Retailer 18
-
$2,722 USD
SGD 3,678 SGD
View
B
Retailer 19
-
$3,160 USD
£2,488 GBP
View
B
Retailer 20
-
$3,835 USD
View
Retailer 21
-
$4,520 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21434150A · Oct 30
$4,520 USD
View
21 more retailers have this diamond
Prices start from $646 USDSave up to $3,874 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
1.86ct Radiant
$646 USD