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Radiant|Lab Grown|IGI

8.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG570332733

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG570332733

Diamond specifications and retailer prices

From $996 USD
As of October 30, 2026
Save $4,174 USD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,170 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 8.5ct lab-grown radiant diamond

This 8.5ct lab-grown radiant 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 LG570332733 or 570332733. Listed at 15 retailers as of October 30, 2026, with prices from $996 to $5,170, a $4,174 spread on the same certified stone. Rare Carat lists it at $5,170. 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

8.50
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570332733
Dimensions14.51 × 9.94 × 6.62 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.51 mm9.94 mm8.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570332733
Side View
Table 65.5%Crown 44.3°Girdle: STK-THKPavilion 34.1°Culet: NoneDepth 66.6%

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: Oct 30
Current: $5,170 USD|Low: $996 USD|High: $10,752 USD|Avg: $3,405 USD
Rare Carat
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
November 2, 2026
Retailer 7$996 USD
Retailer 6$1,084 USD
Retailer 14$1,155 USD
Retailer 15$1,330 USD
Retailer 17$1,370 USD
Retailer 11$1,375 USD
Retailer 2$1,651 USD
Retailer 16$1,657 USD
Retailer 12$1,836 USD
Retailer 5$1,846 USD
Retailer 3$2,166 USD
Retailer 13$2,490 USD
Retailer 10$3,919 USD
Retailer 4$4,852 USD
Rare Carat$5,170 USD
Retailer 9$10,470 USD
Retailer 8$10,752 USD

7 data points across 17 retailers

15 retailers$996 USD to $5,170 USD

A
Cheapest Retailer
-
$996 USD
A
Retailer 2
-
$1,084 USD
View
A
Retailer 3
-
$1,155 USD
View
A
Retailer 4
-
$1,330 USD
View
A
Retailer 5
-
$1,370 USD
HK$10,700 HKD
View
A
Retailer 6
-
$1,375 USD
£1,083 GBP
View
A
Retailer 7
-
$1,651 USD
£1,300 GBP
View
A
Retailer 8
-
$1,657 USD
View
B+
Retailer 9
-
$1,836 USD
€1,749 EUR
View
B+
Retailer 10
-
$1,846 USD
View
B+
Retailer 11
-
$2,166 USD
View
B+
Retailer 12
-
$2,490 USD
View
B
Retailer 13
-
$3,919 USD
£3,086 GBP
View
B
Retailer 14
-
$4,852 USD
View
Most Expensive
B
Rare Carat
KI7333327KF570 · Nov 1
$5,170 USD
View
14 more retailers have this diamond
Prices start from $996 USDSave up to $4,174 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
8.50ct Radiant
$996 USD