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Round|Lab Grown|IGI

3.56ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG689536418

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689536418

Diamond specifications and retailer prices

From $379 USD
As of October 29, 2026
Save $1,531 USD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,910 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.56ct lab-grown round diamond

This 3.56ct 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 LG689536418 or 689536418. Listed at 14 retailers as of October 28, 2026, with prices from $379 to $1,910, a $1,531 spread on the same certified stone. Rare Carat lists it at $1,910. 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

3.56
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689536418
Dimensions9.85 × 9.91 × 5.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.85 mm9.91 mm3.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689536418
Side View
Table 57.0%Crown 34.4°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.7%

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: $1,910 USD|Low: $379 USD|High: $5,120 USD|Avg: $1,559 USD|-27.6%
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
October 30, 2026
Retailer 10$379 USD
Retailer 6$425 USD
Retailer 5$470 USD
Retailer 15$525 USD
Retailer 11$620 USD
Retailer 2$630 USD
Retailer 3$748 USD
Retailer 12$751 USD
Retailer 14$801 USD
Retailer 9$848 USD
Retailer 16$1,103 USD
Retailer 4$1,511 USD
Retailer 13$1,847 USD
Rare Carat$1,910 USD
Retailer 7$4,878 USD
Retailer 8$5,120 USD

4 data points across 16 retailers

14 retailers$379 USD to $1,910 USD

A
Cheapest Retailer
-
$379 USD
A
Retailer 2
-
$425 USD
View
A
Retailer 3
-
$470 USD
View
A
Retailer 4
-
$525 USD
HK$4,100 HKD
View
A
Retailer 5
-
$620 USD
View
A
Retailer 6
-
$630 USD
£496 GBP
View
B+
Retailer 7
-
$748 USD
View
A
Retailer 8
-
$751 USD
€715 EUR
View
A
Retailer 9
-
$801 USD
View
A
Retailer 10
-
$848 USD
£668 GBP
View
B+
Retailer 11
-
$1,103 USD
View
B+
Retailer 12
-
$1,511 USD
View
B
Retailer 13
-
$1,847 USD
£1,454 GBP
View
Most Expensive
B
Rare Carat
KI4185364KF689 · Oct 28
$1,910 USD
View
13 more retailers have this diamond
Prices start from $379 USDSave up to $1,531 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
3.56ct Round
$379 USD