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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 $1,146 NZD
$646 USD
As of October 30, 2026
Save $6,874 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,020 NZD at Brilliant Earth · As of October 31, 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 $1,146 to $8,020, a $6,874 spread on the same certified stone. Brilliant Earth lists it at $8,020. 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
Colour
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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $8,020 NZD|Low: $1,146 NZD|High: $10,575 NZD|Avg: $3,673 NZD|-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
Retailer 20
Retailer 21
October 31, 2026
Retailer 11$1,146 NZD
Retailer 20$1,246 NZD
Retailer 10$1,329 NZD
Retailer 7$1,336 NZD
Retailer 16$1,641 NZD
Retailer 3$1,787 NZD
Retailer 13$2,123 NZD
Retailer 17$2,172 NZD
Retailer 2$2,273 NZD
Retailer 15$2,441 NZD
Retailer 5$2,818 NZD
Retailer 4$3,089 NZD
Retailer 8$3,737 NZD
Retailer 6$4,137 NZD
Retailer 19$4,368 NZD
Retailer 12$4,585 NZD
Retailer 9$4,829 NZD
Retailer 18$5,606 NZD
Retailer 21$6,804 NZD
Brilliant Earth$8,020 NZD
Retailer 14$8,020 NZD

32 data points across 21 retailers

22 retailers$1,146 NZD to $8,020 NZD

A
Cheapest Retailer
-
$1,146 NZD
$646 USD
A
Retailer 2
-
$1,246 NZD
$702 USD
View
A
Retailer 3
-
$1,329 NZD
$749 USD
View
A
Retailer 4
-
$1,336 NZD
$753 USD
View
Final sale: no returns
Retailer 5
-
$1,418 NZD
$799 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,641 NZD
$925 USD
View
A
Retailer 7
-
$1,787 NZD
$1,007 USD
View
A
Retailer 8
-
$2,123 NZD
£942 GBP
View
A
Retailer 9
-
$2,172 NZD
$1,224 USD
View
A
Retailer 10
-
$2,273 NZD
€1,220 EUR
View
B+
Retailer 11
-
$2,441 NZD
ZAR 22,229 ZAR
View
B+
Retailer 12
-
$2,818 NZD
$1,588 USD
View
B+
Retailer 13
-
$3,089 NZD
$1,741 USD
View
B+
Retailer 14
-
$3,737 NZD
$2,106 USD
View
B+
Retailer 15
-
$4,137 NZD
£1,836 GBP
View
B+
Retailer 16
-
$4,368 NZD
$2,462 USD
View
B+
Retailer 17
-
$4,585 NZD
$2,584 USD
View
B+
Retailer 18
-
$4,829 NZD
SGD 3,678 SGD
View
B
Retailer 19
-
$5,606 NZD
£2,488 GBP
View
B
Retailer 20
-
$6,804 NZD
$3,835 USD
View
Retailer 21
-
$8,020 NZD
$4,520 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21434150A · Oct 31
$8,020 NZD
$4,520 USD
View
21 more retailers have this diamond
Prices start from $1,146 NZDSave up to $6,874 NZD

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
$1,146 NZD