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Heart|Lab Grown|IGI

2.57ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG825661268

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825661268

Diamond specifications and retailer prices

From $1,668 NZD
$940 USD
As of October 30, 2026
Save $12,757 NZD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,425 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.57ct lab-grown heart diamond

This 2.57ct lab-grown heart sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825661268 or 825661268. Listed at 18 retailers as of October 28, 2026, with prices from $1,668 to $14,425, a $12,757 spread on the same certified stone. Brilliant Earth lists it at $14,425. 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
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661268
Dimensions8.33 × 9.33 × 5.56 mm
L/W Ratio1.12
Girdle conditionFaceted
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
8.33 mm9.33 mm2.57 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661268
Side View
Table 56.0%Crown 35.1°Girdle: Slightly ThickPavilion 38.7°Culet: NoneDepth 59.6%

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: $14,425 NZD|Low: $1,867 NZD|High: $14,425 NZD|Avg: $5,178 NZD
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
October 30, 2026
Retailer 3$1,867 NZD
Retailer 2$1,962 NZD
Retailer 15$2,244 NZD
Retailer 8$2,973 NZD
Retailer 6$3,098 NZD
Retailer 12$3,932 NZD
Retailer 11$4,587 NZD
Retailer 4$4,787 NZD
Retailer 9$4,989 NZD
Retailer 13$5,745 NZD
Retailer 7$6,490 NZD
Retailer 10$6,593 NZD
Retailer 5$6,728 NZD
Retailer 14$6,964 NZD
Brilliant Earth$14,425 NZD

31 data points across 15 retailers

18 retailers$1,668 NZD to $14,425 NZD

A
Cheapest Retailer
-
$1,668 NZD
$940 USD
A
Retailer 2
-
$1,867 NZD
$1,052 USD
View
Final sale: no returns
A
Retailer 3
-
$1,934 NZD
$1,090 USD
View
Retailer 4
-
$1,934 NZD
$1,090 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$1,962 NZD
£871 GBP
View
A
Retailer 6
-
$2,244 NZD
$1,265 USD
View
A
Retailer 7
-
$2,973 NZD
£1,320 GBP
View
A
Retailer 8
-
$3,098 NZD
$1,746 USD
View
A
Retailer 9
-
$3,932 NZD
$2,216 USD
View
Retailer 10
-
$4,587 NZD
A$3,977 AUD
View
Price last confirmed 8 days ago
A
Retailer 11
-
$4,787 NZD
$2,698 USD
View
B+
Retailer 12
-
$4,989 NZD
ZAR 45,426 ZAR
View
B+
Retailer 13
-
$5,745 NZD
$3,238 USD
View
B+
Retailer 14
-
$6,490 NZD
SGD 4,943 SGD
View
B+
Retailer 15
-
$6,593 NZD
£2,926 GBP
View
B+
Retailer 16
-
$6,728 NZD
$3,792 USD
View
B+
Retailer 17
-
$6,964 NZD
$3,925 USD
View
Most Expensive
B
Brilliant Earth
21603034A · Oct 28
$14,425 NZD
$8,130 USD
View
17 more retailers have this diamond
Prices start from $1,668 NZDSave up to $12,757 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 Heart
$1,668 NZD