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Radiant|Lab Grown|IGI

2.58ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804666686

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

Certificate IGI LG804666686

Diamond specifications and retailer prices

From $3,431 NZD
$1,934 USD
As of October 30, 2026
Save $13,868 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $17,299 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.58ct lab-grown radiant diamond

This 2.58ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804666686 or 804666686. Listed at 11 retailers as of October 29, 2026, with prices from $3,431 to $17,299, a $13,868 spread on the same certified stone. Brilliant Earth lists it at $17,299. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.58
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804666686
Dimensions9.78 × 6.91 × 4.47 mm
L/W Ratio1.42
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
9.78 mm6.91 mm2.58 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804666686
Side View
Table 65.0%Crown 42.1°Girdle: ThickPavilion 33.7°Culet: NoneDepth 64.7%

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 30
Current: $17,299 NZD|Low: $3,431 NZD|High: $17,903 NZD|Avg: $8,542 NZD|-3.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7$3,431 NZD
Retailer 11$3,770 NZD
Retailer 4$4,328 NZD
Retailer 10$4,666 NZD
Retailer 2$4,971 NZD
Retailer 6$5,007 NZD
Retailer 9$8,057 NZD
Retailer 5$8,874 NZD
Retailer 8$10,867 NZD
Retailer 3$11,898 NZD
Brilliant Earth$17,299 NZD

42 data points across 11 retailers

11 retailers$3,431 NZD to $17,299 NZD

A
Cheapest Retailer
-
$3,431 NZD
$1,934 USD
A
Retailer 2
-
$3,770 NZD
HK$16,600 HKD
View
A
Retailer 3
-
$4,328 NZD
£1,921 GBP
View
A
Retailer 4
-
$4,666 NZD
$2,630 USD
View
Retailer 5
-
$4,971 NZD
€2,668 EUR
View
A
Retailer 6
-
$5,007 NZD
$2,822 USD
View
B+
Retailer 7
-
$8,057 NZD
$4,541 USD
View
B+
Retailer 8
-
$8,874 NZD
£3,938 GBP
View
B
Retailer 9
-
$10,867 NZD
$6,125 USD
View
B
Retailer 10
-
$11,898 NZD
$6,706 USD
View
Most Expensive
B
Brilliant Earth
20503052A · Oct 29
$17,299 NZD
$9,750 USD
View
10 more retailers have this diamond
Prices start from $3,431 NZDSave up to $13,868 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
2.58ct Radiant
$3,431 NZD