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Round|Lab Grown|IGI

3.56ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG634434828

Shape and cutting style on the report: Round brilliant

Certificate IGI LG634434828

Diamond specifications and retailer prices

From $725 USD
As of November 2, 2026
Save $2,045 USD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,770 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.56ct lab-grown round diamond

This 3.56ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG634434828 or 634434828. Listed at 15 retailers as of October 31, 2026, with prices from $725 to $2,770, a $2,045 spread on the same certified stone. Brilliant Earth lists it at $2,770. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634434828
Dimensions9.90 × 9.83 × 6.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.90 mm9.83 mm3.56 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634434828
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,770 USD|Low: $500 USD|High: $2,960 USD|Avg: $1,278 USD|-6.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$500 USD
Retailer 3$705 USD
Retailer 6$725 USD
Retailer 5$843 USD
Retailer 12$915 USD
Retailer 2$970 USD
Retailer 10$978 USD
Retailer 11$1,320 USD
Retailer 7$1,577 USD
Retailer 8$1,890 USD
Retailer 9$2,165 USD
Brilliant Earth$2,770 USD

37 data points across 12 retailers

15 retailers$725 USD to $2,770 USD

Retailer 1
-
$403 USD
Price last confirmed 39 days ago
Retailer 2
-
$452 USD
View
Price last confirmed 39 days ago
Retailer 3
-
$494 USD
View
Price last confirmed 35 days ago
Retailer 4
-
$705 USD
£555 GBP
View
Price last confirmed 24 days ago
A
Retailer 5
-
$725 USD
View
A
Retailer 6
-
$843 USD
€803 EUR
View
B+
Retailer 7
-
$915 USD
View
B+
Retailer 8
-
$970 USD
£764 GBP
View
A
Retailer 9
-
$978 USD
View
B+
Retailer 10
-
$1,320 USD
View
B
Retailer 11
-
$1,577 USD
View
Retailer 12
-
$1,608 USD
View
Price last confirmed 36 days ago
B
Retailer 13
-
$1,890 USD
View
Retailer 14
-
$2,165 USD
£1,705 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
10434013A · Oct 31
$2,770 USD
View
14 more retailers have this diamond
Prices start from $725 USDSave up to $2,045 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
$725 USD