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Round|Lab Grown|IGI

2.51ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG825666387

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825666387

Diamond specifications and retailer prices

From $1,102 USD
As of October 29, 2026
Save $3,367 USD (75%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,965 USD at Rare Carat · As of October 14, 2026
View at Rare Carat

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825666387 or 825666387. Listed at 20 retailers as of October 29, 2026, with a 306% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.51
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825666387
Dimensions8.85 × 8.89 × 5.26 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
8.85 mm8.89 mm2.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825666387
Side View
Table 58.0%Crown 32.9°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.3%

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: Oct 29
Current: $5,965 USD|Low: $1,097 USD|High: $5,965 USD|Avg: $2,539 USD
Rare Carat
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
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Retailer 14
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Retailer 19
Retailer 20
October 30, 2026
Retailer 8$1,102 USD
Retailer 4$1,199 USD
Retailer 5$1,233 USD
Retailer 12$1,326 USD
Retailer 13$1,526 USD
Retailer 9$1,589 USD
Retailer 14$1,845 USD
Retailer 7$1,922 USD
Retailer 20$1,970 USD
Retailer 10$1,985 USD
Retailer 17$2,041 USD
Retailer 3$2,396 USD
Retailer 11$2,612 USD
Retailer 6$3,296 USD
Retailer 15$3,298 USD
Retailer 18$3,702 USD
Retailer 19$4,072 USD
Retailer 16$4,129 USD
Retailer 2$4,469 USD
Rare Carat$5,965 USD

28 data points across 20 retailers

20 retailers$1,102 USD to $4,469 USD

A
Cheapest Retailer
-
$1,102 USD
A
Retailer 2
-
$1,199 USD
View
A
Retailer 3
-
$1,233 USD
View
Final sale: no returns
Retailer 4
-
$1,326 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
$1,526 USD
£1,201 GBP
View
A
Retailer 6
-
$1,589 USD
View
A
Retailer 7
-
$1,845 USD
£1,453 GBP
View
A
Retailer 8
-
$1,922 USD
View
A
Retailer 9
-
$1,970 USD
View
B+
Retailer 10
-
$1,985 USD
View
A
Retailer 11
-
$2,041 USD
€1,944 EUR
View
B+
Retailer 12
-
$2,396 USD
View
B+
Retailer 13
-
$2,612 USD
View
B+
Retailer 14
-
$3,296 USD
View
B+
Retailer 15
-
$3,298 USD
ZAR 53,281 ZAR
View
B+
Retailer 16
-
$3,702 USD
View
B+
Retailer 17
-
$4,072 USD
View
B
Retailer 18
-
$4,129 USD
£3,251 GBP
View
B
Retailer 19
-
$4,469 USD
View
Most Expensive
Rare Carat
C526-8A · Oct 14
$5,965 USD
View
Price last confirmed 16 days ago
19 more retailers have this diamond
Prices start from $1,102 USDSave up to $3,367 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
2.51ct Round
$1,102 USD