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Round|Lab Grown|IGI

5.55ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG571309397

Shape and cutting style on the report: Round brilliant

Certificate IGI LG571309397

Diamond specifications and retailer prices

From €618 EUR
$693 USD
As of November 1, 2026
Save €2,607 EUR (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,225 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 5.55ct lab-grown round diamond

This 5.55ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571309397 or 571309397. Listed at 15 retailers as of October 31, 2026, with prices from €618 to €3,225, a €2,607 spread on the same certified stone. Blue Nile lists it at €3,225. 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

5.55
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571309397
Dimensions11.30 × 11.33 × 7.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
11.30 mm11.33 mm5.55 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571309397
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.3%

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: Nov 1
Current: €3,225 EUR|Low: €540 EUR|High: €3,225 EUR|Avg: €1,350 EUR
Blue Nile
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
Retailer 17
November 2, 2026
Retailer 9€605 EUR
Retailer 4€618 EUR
Retailer 12€672 EUR
Retailer 15€717 EUR
Retailer 16€717 EUR
Retailer 14€943 EUR
Retailer 2€1,057 EUR
Retailer 17€1,092 EUR
Retailer 10€1,134 EUR
Retailer 5€1,142 EUR
Retailer 7€1,164 EUR
Retailer 6€1,202 EUR
Retailer 13€1,764 EUR
Retailer 3€2,014 EUR
Retailer 11€2,829 EUR
Retailer 8€3,183 EUR
Blue Nile€3,225 EUR

39 data points across 17 retailers

15 retailers€618 EUR to €3,225 EUR

A
Cheapest Retailer
-
€618 EUR
$693 USD
A
Retailer 2
-
€672 EUR
$754 USD
View
A
Retailer 3
-
€717 EUR
$804 USD
View
Retailer 4
-
€717 EUR
$804 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
€1,057 EUR
View
B+
Retailer 6
-
€1,092 EUR
$1,225 USD
View
B+
Retailer 7
-
€1,134 EUR
£1,002 GBP
View
B+
Retailer 8
-
€1,142 EUR
$1,281 USD
View
B+
Retailer 9
-
€1,164 EUR
$1,306 USD
View
B+
Retailer 10
-
€1,202 EUR
$1,348 USD
View
B
Retailer 11
-
€1,764 EUR
$1,979 USD
View
B
Retailer 12
-
€2,014 EUR
$2,259 USD
View
B
Retailer 13
-
€2,829 EUR
£2,498 GBP
View
B
Retailer 14
-
€3,183 EUR
$3,570 USD
View
Most Expensive
B
Blue Nile
25246473 · Oct 31
€3,225 EUR
$3,617 USD
View
14 more retailers have this diamond
Prices start from €618 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
5.55ct Round
€618 EUR