CaratHunter
Plans
Round|Lab Grown|IGI

4.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG706555800

Shape and cutting style on the report: Round brilliant

Certificate IGI LG706555800

Diamond specifications and retailer prices

From €490 EUR
$547 USD
As of October 26, 2026
Save €2,607 EUR (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €3,097 EUR at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 4.09ct lab-grown round diamond

This 4.09ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG706555800 or 706555800. Listed at 19 retailers as of October 26, 2026, with prices from €490 to €3,097, a €2,607 spread on the same certified stone. Brilliant Earth lists it at €3,097. 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

4.09
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706555800
Dimensions10.33 × 10.28 × 6.29 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
10.33 mm10.28 mm4.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706555800
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.1%

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: Oct 26
Current: €3,097 EUR|Low: €490 EUR|High: €3,195 EUR|Avg: €1,444 EUR|-3.1%
Brilliant Earth
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
October 31, 2026
Retailer 15€490 EUR
Retailer 7€548 EUR
Retailer 9€815 EUR
Retailer 14€815 EUR
Retailer 3€893 EUR
Retailer 2€923 EUR
Retailer 10€937 EUR
Retailer 8€1,139 EUR
Retailer 4€1,519 EUR
Retailer 12€1,566 EUR
Retailer 5€1,963 EUR
Retailer 6€1,969 EUR
Retailer 13€2,444 EUR
Retailer 11€2,536 EUR
Brilliant Earth€3,097 EUR

42 data points across 15 retailers

19 retailers€490 EUR to €3,097 EUR

A
Cheapest Retailer
-
€490 EUR
$547 USD
Retailer 2
-
€548 EUR
$612 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
€607 EUR
$678 USD
View
Retailer 4
-
€607 EUR
$678 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
€815 EUR
$910 USD
View
B+
Retailer 6
-
€815 EUR
$910 USD
View
A
Retailer 7
-
€893 EUR
$998 USD
View
A
Retailer 8
-
€923 EUR
View
A
Retailer 9
-
€937 EUR
£824 GBP
View
B+
Retailer 10
-
€1,139 EUR
A$1,958 AUD
View
B+
Retailer 11
-
€1,519 EUR
$1,697 USD
View
B+
Retailer 12
-
€1,566 EUR
$1,749 USD
View
Retailer 13
-
€1,596 EUR
$1,783 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
€1,963 EUR
$2,193 USD
View
B
Retailer 15
-
€1,969 EUR
$2,200 USD
View
Retailer 16
-
€2,444 EUR
$2,730 USD
View
Price last confirmed 10 days ago
Retailer 17
-
€2,457 EUR
$2,745 USD
View
Price last confirmed 37 days ago
B
Retailer 18
-
€2,536 EUR
£2,231 GBP
View
Most Expensive
B
Brilliant Earth
14469124A · Oct 26
€3,097 EUR
$3,460 USD
View
18 more retailers have this diamond
Prices start from €490 EURSave up to €2,607 EUR

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
4.09ct Round
€490 EUR