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Radiant|Lab Grown|IGI

2.57ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG830624738

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

Certificate IGI LG830624738

Diamond specifications and retailer prices

From $1,842 NZD
$1,038 USD
As of October 30, 2026
Save $14,517 NZD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $16,359 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.57ct lab-grown radiant diamond

This 2.57ct 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 LG830624738 or 830624738. Listed at 16 retailers as of October 30, 2026, with prices from $1,842 to $16,359, a $14,517 spread on the same certified stone. Do Amore Diamonds lists it at $16,359. 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

2.57
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830624738
Dimensions9.80 × 6.83 × 4.48 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
9.80 mm6.83 mm2.57 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830624738
Side View
Table 62.0%Crown 40.2°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 65.6%

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: $16,359 NZD|Low: $1,842 NZD|High: $21,150 NZD|Avg: $8,424 NZD|-22.7%
Do Amore Diamonds
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
October 31, 2026
Retailer 14$1,842 NZD
Retailer 4$2,003 NZD
Retailer 16$2,408 NZD
Retailer 13$2,493 NZD
Retailer 12$3,135 NZD
Retailer 15$3,405 NZD
Retailer 7$3,719 NZD
Retailer 2$3,976 NZD
Retailer 18$4,420 NZD
Retailer 17$4,464 NZD
Retailer 6$6,075 NZD
Retailer 3$7,585 NZD
Retailer 8$10,176 NZD
Retailer 11$11,089 NZD
Retailer 5$12,175 NZD
Retailer 9$12,752 NZD
Do Amore Diamonds$16,359 NZD
Retailer 10$16,552 NZD

35 data points across 18 retailers

16 retailers$1,842 NZD to $16,359 NZD

A
Cheapest Retailer
-
$1,842 NZD
$1,038 USD
A
Retailer 2
-
$2,003 NZD
$1,129 USD
View
A
Retailer 3
-
$2,408 NZD
$1,357 USD
View
A
Retailer 4
-
$2,493 NZD
$1,405 USD
View
A
Retailer 5
-
$2,821 NZD
$1,590 USD
View
A
Retailer 6
-
$3,405 NZD
$1,919 USD
View
A
Retailer 7
-
$3,719 NZD
$2,096 USD
View
Retailer 8
-
$3,976 NZD
€2,134 EUR
View
A
Retailer 9
-
$4,420 NZD
$2,491 USD
View
A
Retailer 10
-
$4,464 NZD
$2,516 USD
View
B+
Retailer 11
-
$6,075 NZD
$3,424 USD
View
B+
Retailer 12
-
$7,585 NZD
£3,366 GBP
View
Retailer 13
-
$10,176 NZD
$5,735 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$11,089 NZD
$6,250 USD
View
B
Retailer 15
-
$12,175 NZD
$6,862 USD
View
Most Expensive
B
Do Amore Diamonds
27-0F12B062A · Oct 31
$16,359 NZD
$9,220 USD
View
15 more retailers have this diamond
Prices start from $1,842 NZDSave up to $14,517 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
2.57ct Radiant
$1,842 NZD