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Round|Lab Grown|IGI

3.70ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG644497177

Shape and cutting style on the report: Round brilliant

Certificate IGI LG644497177

Diamond specifications and retailer prices

From $398 USD
As of October 29, 2026
Save $1,378 USD (78%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,776 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.7ct lab-grown round diamond

This 3.7ct 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 LG644497177 or 644497177. Listed at 3 retailers as of October 29, 2026, with prices from $398 to $1,776, a $1,378 spread on the same certified stone. The Diamond Guys lists it at $1,776. 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

3.70
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644497177
Dimensions10.03 × 10.01 × 6.03 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
10.03 mm10.01 mm3.70 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644497177
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.2%

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 29
Current: $398 USD|Low: $303 USD|High: $5,150 USD|Avg: $1,421 USD|-4.1%
Retailer 1
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
The Diamond Guys
October 27, 2026
Retailer 1$398 USD
Retailer 13$470 USD
Retailer 7$471 USD
Retailer 10$627 USD
Retailer 11$726 USD
Retailer 8$776 USD
Retailer 9$808 USD
Retailer 2$1,129 USD
Retailer 12$1,180 USD
Retailer 14$1,210 USD
Retailer 4$1,343 USD
The Diamond Guys$1,776 USD
Retailer 6$2,260 USD
Retailer 5$2,770 USD
Retailer 3$5,150 USD

10 data points across 15 retailers

3 retailers$398 USD to $1,776 USD

A
Cheapest Retailer
-
$398 USD
Final sale: no returns
B+
Retailer 2
-
$1,343 USD
CA$1,865 CAD
View
Most Expensive
B
The Diamond Guys
1954434265 · Oct 30
$1,776 USD
View
2 more retailers have this diamond
Prices start from $398 USDSave up to $1,378 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
3.70ct Round
$398 USD