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Radiant|Lab Grown|IGI

2.57ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG700540698

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

Certificate IGI LG700540698

Diamond specifications and retailer prices

From $1,573 NZD
$885 USD
As of November 2, 2026
Save $8,309 NZD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,882 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant 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 LG700540698 or 700540698. Listed at 12 retailers as of November 2, 2026, with prices from $1,573 to $9,882, a $8,309 spread on the same certified stone. Brilliant Earth lists it at $9,882. 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 angle40.9°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700540698
Dimensions9.74 × 6.50 × 4.65 mm
L/W Ratio1.50
Culet sizePointed
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
9.74 mm6.50 mm2.57 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700540698
Side View
Table 63.0%Crown 40.9°Girdle: MED-STKPavilion 36°Culet: NoneDepth 71.5%

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: Nov 2
Current: $9,882 NZD|Low: $1,365 NZD|High: $10,415 NZD|Avg: $4,829 NZD|-3.0%
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
October 31, 2026
Retailer 4$1,365 NZD
Retailer 14$1,573 NZD
Retailer 3$1,642 NZD
Retailer 9$2,081 NZD
Retailer 2$2,269 NZD
Retailer 11$3,368 NZD
Retailer 5$3,652 NZD
Retailer 12$3,771 NZD
Retailer 8$5,934 NZD
Retailer 7$6,290 NZD
Retailer 13$7,420 NZD
Retailer 6$7,903 NZD
Retailer 10$9,722 NZD
Brilliant Earth$9,882 NZD

18 data points across 14 retailers

12 retailers$1,573 NZD to $9,882 NZD

A
Cheapest Retailer
-
$1,573 NZD
$885 USD
A
Retailer 2
-
$1,642 NZD
$924 USD
View
A
Retailer 3
-
$2,081 NZD
$1,171 USD
View
A
Retailer 4
-
$2,269 NZD
€1,216 EUR
View
A
Retailer 5
-
$3,368 NZD
$1,895 USD
View
A
Retailer 6
-
$3,652 NZD
$2,055 USD
View
A
Retailer 7
-
$3,771 NZD
$2,122 USD
View
B+
Retailer 8
-
$5,934 NZD
£2,629 GBP
View
B+
Retailer 9
-
$6,290 NZD
A$5,445 AUD
View
B+
Retailer 10
-
$7,420 NZD
$4,175 USD
View
B
Retailer 11
-
$9,722 NZD
$5,470 USD
View
Most Expensive
B
Brilliant Earth
13959243Y · Nov 2
$9,882 NZD
$5,560 USD
View
11 more retailers have this diamond
Prices start from $1,573 NZDSave up to $8,309 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
$1,573 NZD