CaratHunter
Plans
Round|Lab Grown|IGI

2.57ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG788625581

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788625581

Diamond specifications and retailer prices

From $579 USD
As of November 1, 2026
Save $7,131 USD (92%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,710 USD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788625581 or 788625581. Listed at 19 retailers as of November 1, 2026, with prices from $579 to $7,710, a $7,131 spread on the same certified stone. Brilliant Earth lists it at $7,710. 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
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788625581
Dimensions8.74 × 8.71 × 5.43 mm
L/W Ratio1.00
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
8.74 mm8.71 mm2.57 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788625581
Side View
Table 58.0%Crown 35.7°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.3%

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: Nov 1
Current: $1,118 USD|Low: $579 USD|High: $3,255 USD|Avg: $1,413 USD|-1.0%
Retailer 1
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
November 3, 2026
Retailer 10$579 USD
Retailer 4$648 USD
Retailer 16$648 USD
Retailer 15$718 USD
Retailer 8$737 USD
Retailer 2$850 USD
Retailer 11$962 USD
Retailer 13$1,048 USD
Retailer 1$1,118 USD
Retailer 5$1,594 USD
Retailer 9$1,781 USD
Retailer 14$1,872 USD
Retailer 3$1,888 USD
Retailer 6$2,324 USD
Retailer 12$2,403 USD
Retailer 7$3,153 USD

23 data points across 16 retailers

19 retailers$579 USD to $7,710 USD

A
Cheapest Retailer
-
$579 USD
A
Retailer 2
-
$648 USD
View
Final sale: no returns
A
Retailer 3
-
$648 USD
View
A
Retailer 4
-
$718 USD
View
Retailer 5
-
$737 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$850 USD
View
A
Retailer 7
-
$962 USD
View
A
Retailer 8
-
$1,048 USD
View
A
Retailer 9
-
$1,118 USD
£880 GBP
View
A
Retailer 10
-
$1,594 USD
A$2,453 AUD
View
B+
Retailer 11
-
$1,781 USD
View
B+
Retailer 12
-
$1,872 USD
View
B+
Retailer 13
-
$1,888 USD
View
B+
Retailer 14
-
$2,324 USD
View
B+
Retailer 15
-
$2,398 USD
View
B+
Retailer 16
-
$2,403 USD
View
B+
Retailer 17
-
$3,153 USD
£2,483 GBP
View
B
Retailer 18
-
$5,035 USD
View
Most Expensive
B
Brilliant Earth
20845258A · Nov 1
$7,710 USD
View
18 more retailers have this diamond
Prices start from $579 USDSave up to $7,131 USD

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 Round
$579 USD