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Round|Lab Grown|IGI

8.30ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG670428663

Shape and cutting style on the report: Round brilliant

Certificate IGI LG670428663

Diamond specifications and retailer prices

From $1,406 USD
As of November 1, 2026
Save $10,104 USD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,510 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 8.3ct lab-grown round diamond

This 8.3ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG670428663 or 670428663. Listed at 19 retailers as of October 31, 2026, with prices from $1,406 to $11,510, a $10,104 spread on the same certified stone. Brilliant Earth lists it at $11,510. 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

8.30
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670428663
Dimensions12.99 × 13.04 × 7.88 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.99 mm13.04 mm8.30 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670428663
Side View
Table 59.0%Crown 35.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 60.6%

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 1
Current: $11,510 USD|Low: $1,350 USD|High: $11,510 USD|Avg: $3,330 USD
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
November 2, 2026
Retailer 3$1,406 USD
Retailer 15$1,530 USD
Retailer 4$1,631 USD
Retailer 7$1,631 USD
Retailer 13$1,800 USD
Retailer 2$1,940 USD
Retailer 9$2,293 USD
Retailer 11$2,332 USD
Retailer 8$2,894 USD
Retailer 14$2,937 USD
Retailer 5$3,057 USD
Retailer 6$3,721 USD
Retailer 10$4,658 USD
Retailer 12$5,560 USD
Brilliant Earth$11,510 USD

33 data points across 15 retailers

19 retailers$1,406 USD to $11,510 USD

A
Cheapest Retailer
-
$1,406 USD
A
Retailer 2
-
$1,530 USD
View
Retailer 3
-
$1,631 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$1,631 USD
View
A
Retailer 5
-
$1,649 USD
View
Final sale: no returns
A
Retailer 6
-
$1,800 USD
View
B+
Retailer 7
-
$1,940 USD
£1,528 GBP
View
B+
Retailer 8
-
$2,136 USD
View
B+
Retailer 9
-
$2,293 USD
£1,805 GBP
View
B+
Retailer 10
-
$2,332 USD
View
B+
Retailer 11
-
$2,721 USD
View
B+
Retailer 12
-
$2,894 USD
€2,756 EUR
View
B+
Retailer 13
-
$2,937 USD
A$4,518 AUD
View
B
Retailer 14
-
$3,057 USD
View
B
Retailer 15
-
$3,721 USD
View
B
Retailer 16
-
$4,658 USD
£3,668 GBP
View
B
Retailer 17
-
$5,560 USD
View
B
Retailer 18
-
$5,737 USD
View
Most Expensive
B
Brilliant Earth
16242502A · Oct 31
$11,510 USD
View
18 more retailers have this diamond
Prices start from $1,406 USDSave up to $10,104 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
8.30ct Round
$1,406 USD