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Round|Lab Grown|IGI

3.90ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG690527176

Shape and cutting style on the report: Round brilliant

Certificate IGI LG690527176

Diamond specifications and retailer prices

From $1,510 USD
CA$2,097 CAD
As of October 30, 2026
Save $487 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,997 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.9ct lab-grown round diamond

This 3.9ct lab-grown round 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 LG690527176 or 690527176. Listed at 2 retailers as of October 30, 2026, with prices from $1,510 to $1,997, a $487 spread on the same certified stone. The Diamond Guys lists it at $1,997. 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

3.90
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG690527176
Dimensions10.03 × 9.98 × 6.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
10.03 mm9.98 mm3.90 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG690527176
Side View
Table 55.0%Crown 35.9°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,430 USD|Low: $298 USD|High: $5,430 USD|Avg: $1,592 USD|+66.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4$800 USD
Retailer 8$884 USD
Retailer 11$949 USD
Retailer 2$996 USD
Retailer 10$1,160 USD
Retailer 7$1,166 USD
Retailer 6$1,211 USD
Retailer 9$1,510 USD
Retailer 3$1,945 USD
The Diamond Guys$1,997 USD
Retailer 5$2,388 USD
Retailer 12$3,090 USD
Retailer 1$5,430 USD

60 data points across 13 retailers

2 retailers$1,510 USD to $1,997 USD

B+
Cheapest Retailer
-
$1,510 USD
CA$2,097 CAD
Most Expensive
B
The Diamond Guys
1954434256 · Oct 30
$1,997 USD
View
1 more retailer has this diamond
Prices start from $1,510 USDSave up to $487 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.

B+
3.90ct Round
$1,510 USD