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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 $693 USD
As of October 29, 2026
Save $2,924 USD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,617 USD 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 16 retailers as of October 29, 2026, with prices from $693 to $3,617, a $2,924 spread on the same certified stone. Blue Nile lists it at $3,617. 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
Color
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: Oct 29
Current: $3,617 USD|Low: $606 USD|High: $3,617 USD|Avg: $1,482 USD
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 1, 2026
Retailer 9$679 USD
Retailer 4$693 USD
Retailer 12$754 USD
Retailer 15$804 USD
Retailer 16$804 USD
Retailer 14$1,057 USD
Retailer 10$1,181 USD
Retailer 17$1,225 USD
Retailer 2$1,272 USD
Retailer 5$1,281 USD
Retailer 7$1,306 USD
Retailer 6$1,348 USD
Retailer 13$1,979 USD
Retailer 3$2,259 USD
Retailer 11$3,172 USD
Retailer 8$3,570 USD
Blue Nile$3,617 USD

40 data points across 17 retailers

16 retailers$693 USD to $3,617 USD

A
Cheapest Retailer
-
$693 USD
A
Retailer 2
-
$754 USD
View
A
Retailer 3
-
$804 USD
View
Retailer 4
-
$804 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$1,057 USD
£832 GBP
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$1,181 USD
€1,125 EUR
View
B+
Retailer 7
-
$1,225 USD
View
B+
Retailer 8
-
$1,272 USD
£1,002 GBP
View
B+
Retailer 9
-
$1,281 USD
View
B+
Retailer 10
-
$1,306 USD
View
B+
Retailer 11
-
$1,348 USD
View
B
Retailer 12
-
$1,979 USD
View
B
Retailer 13
-
$2,259 USD
View
B
Retailer 14
-
$3,172 USD
£2,498 GBP
View
B
Retailer 15
-
$3,570 USD
View
Most Expensive
B
Blue Nile
25246473 · Oct 31
$3,617 USD
View
15 more retailers have this diamond
Prices start from $693 USDSave up to $2,924 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
5.55ct Round
$693 USD