Radiant|Lab Grown|IGI

3.17ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG685588982

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

Certificate IGI LG685588982

Diamond specifications and retailer prices

From $394 USD
As of October 30, 2026
Save $3,106 USD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,500 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.17ct lab-grown radiant diamond

This 3.17ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685588982 or 685588982. Listed at 10 retailers as of October 29, 2026, with prices from $394 to $3,500, a $3,106 spread on the same certified stone. Do Amore Diamonds lists it at $3,500. 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

3.17
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685588982
Dimensions10.44 × 7.20 × 4.86 mm
L/W Ratio1.45
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.44 mm7.20 mm3.17 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685588982
Side View
Table 66.0%Crown 42.9°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 67.5%

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: $3,500 USD|Low: $625 USD|High: $3,500 USD|Avg: $1,870 USD|+2.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 3$775 USD
Retailer 5$775 USD
Retailer 4$1,370 USD
Retailer 6$1,447 USD
Retailer 2$1,991 USD
Retailer 7$2,710 USD
Do Amore Diamonds$3,500 USD

13 data points across 7 retailers

10 retailers$394 USD to $3,500 USD

A
Cheapest Retailer
-
$394 USD
Retailer 2
-
$436 USD
View
Price last confirmed 33 days ago
A
Retailer 3
-
$775 USD
View
B+
Retailer 4
-
$775 USD
View
B+
Retailer 5
-
$1,370 USD
View
B+
Retailer 6
-
$1,447 USD
View
B
Retailer 7
-
$1,733 USD
View
B
Retailer 8
-
$1,991 USD
£1,568 GBP
View
B
Retailer 9
-
$2,710 USD
View
Most Expensive
B
Do Amore Diamonds
27-8A754A733 · Oct 29
$3,500 USD
View
9 more retailers have this diamond
Prices start from $394 USDSave up to $3,106 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
3.17ct Radiant
$394 USD