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Round|Lab Grown|IGI

8.31ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG595371329

Shape and cutting style on the report: Round brilliant

Certificate IGI LG595371329

Diamond specifications and retailer prices

From $1,611 CAD
$1,153 USD
As of October 29, 2026
Save $5,966 CAD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,577 CAD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 8.31ct lab-grown round diamond

This 8.31ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG595371329 or 595371329. Listed at 15 retailers as of October 29, 2026, with prices from $1,611 to $7,577, a $5,966 spread on the same certified stone. Blue Nile lists it at $7,577. 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

8.31
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG595371329
Dimensions13.00 × 12.92 × 7.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
13.00 mm12.92 mm8.31 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG595371329
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.5%

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: $7,577 CAD|Low: $1,405 CAD|High: $7,577 CAD|Avg: $3,164 CAD
Blue Nile
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
Retailer 17
October 31, 2026
Retailer 8$1,574 CAD
Retailer 4$1,611 CAD
Retailer 9$1,630 CAD
Retailer 12$1,753 CAD
Retailer 17$1,869 CAD
Retailer 16$1,899 CAD
Retailer 10$2,109 CAD
Retailer 6$2,621 CAD
Retailer 2$2,664 CAD
Retailer 11$2,700 CAD
Retailer 5$2,967 CAD
Retailer 3$3,502 CAD
Retailer 13$3,682 CAD
Retailer 15$6,035 CAD
Retailer 14$6,665 CAD
Retailer 7$7,543 CAD
Blue Nile$7,577 CAD

41 data points across 17 retailers

15 retailers$1,611 CAD to $7,577 CAD

A
Cheapest Retailer
-
$1,611 CAD
$1,153 USD
A
Retailer 2
-
$1,753 CAD
$1,255 USD
View
A
Retailer 3
-
$1,869 CAD
$1,338 USD
View
Retailer 4
-
$1,899 CAD
£1,071 GBP
View
Price last confirmed 14 days ago
A
Retailer 5
-
$2,109 CAD
$1,510 USD
View
B+
Retailer 6
-
$2,621 CAD
$1,876 USD
View
B+
Retailer 7
-
$2,664 CAD
€1,816 EUR
View
B+
Retailer 8
-
$2,700 CAD
£1,522 GBP
View
B+
Retailer 9
-
$2,967 CAD
$2,124 USD
View
B+
Retailer 10
-
$3,502 CAD
$2,507 USD
View
B+
Retailer 11
-
$3,682 CAD
$2,636 USD
View
B
Retailer 12
-
$6,035 CAD
£3,402 GBP
View
B
Retailer 13
-
$6,665 CAD
$4,771 USD
View
B
Retailer 14
-
$7,543 CAD
$5,400 USD
View
Most Expensive
B
Blue Nile
25246920 · Oct 31
$7,577 CAD
$5,424 USD
View
14 more retailers have this diamond
Prices start from $1,611 CADSave up to $5,966 CAD

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
8.31ct Round
$1,611 CAD