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Round|Lab Grown|IGI

5.25ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG683509509

Shape and cutting style on the report: Round brilliant

Certificate IGI LG683509509

Diamond specifications and retailer prices

From $1,164 USD
As of October 30, 2026
Save $2,916 USD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,275 USD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 5.25ct lab-grown round diamond

This 5.25ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG683509509 or 683509509. Listed at 15 retailers as of October 30, 2026, with a 251% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.25
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683509509
Dimensions11.22 × 11.17 × 6.82 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.22 mm11.17 mm5.25 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683509509
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.9%

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: $4,275 USD|Low: $759 USD|High: $8,100 USD|Avg: $2,376 USD|-2.1%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 12$759 USD
Retailer 10$947 USD
Retailer 11$1,164 USD
Retailer 8$1,165 USD
Retailer 2$1,185 USD
Retailer 3$1,192 USD
Retailer 7$1,222 USD
Retailer 4$1,738 USD
Retailer 9$1,884 USD
Retailer 6$3,313 USD
Retailer 5$4,080 USD
Rare Carat$4,275 USD

37 data points across 12 retailers

15 retailers$1,164 USD to $4,080 USD

Retailer 1
-
$612 USD
Price last confirmed 35 days ago
Retailer 2
-
$686 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$749 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$947 USD
£746 GBP
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$1,164 USD
View
B+
Retailer 6
-
$1,165 USD
View
A
Retailer 7
-
$1,185 USD
£933 GBP
View
A
Retailer 8
-
$1,192 USD
View
A
Retailer 9
-
$1,222 USD
€1,164 EUR
View
B+
Retailer 10
-
$1,738 USD
View
B+
Retailer 11
-
$1,884 USD
View
Retailer 12
-
$1,997 USD
View
Price last confirmed 33 days ago
B
Retailer 13
-
$3,313 USD
£2,609 GBP
View
B
Retailer 14
-
$4,080 USD
View
Most Expensive
Rare Carat
703940 · Oct 21
$4,275 USD
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $1,164 USDSave up to $2,916 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
5.25ct Round
$1,164 USD