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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 $987 AUD
$693 USD
As of November 1, 2026
Save $4,163 AUD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,149 AUD 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 31, 2026, with prices from $987 to $5,149, a $4,163 spread on the same certified stone. Blue Nile lists it at $5,149. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,149 AUD|Low: $863 AUD|High: $5,149 AUD|Avg: $2,112 AUD
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$967 AUD
Retailer 4$987 AUD
Retailer 12$1,073 AUD
Retailer 15$1,145 AUD
Retailer 16$1,145 AUD
Retailer 14$1,505 AUD
Retailer 10$1,682 AUD
Retailer 17$1,744 AUD
Retailer 2$1,811 AUD
Retailer 5$1,824 AUD
Retailer 7$1,859 AUD
Retailer 6$1,919 AUD
Retailer 13$2,817 AUD
Retailer 3$3,216 AUD
Retailer 11$4,516 AUD
Retailer 8$5,082 AUD
Blue Nile$5,149 AUD

39 data points across 17 retailers

16 retailers$987 AUD to $5,149 AUD

A
Cheapest Retailer
-
$987 AUD
$693 USD
A
Retailer 2
-
$1,073 AUD
$754 USD
View
A
Retailer 3
-
$1,145 AUD
$804 USD
View
Retailer 4
-
$1,145 AUD
$804 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$1,505 AUD
£832 GBP
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$1,682 AUD
€1,125 EUR
View
B+
Retailer 7
-
$1,744 AUD
$1,225 USD
View
B+
Retailer 8
-
$1,811 AUD
£1,002 GBP
View
B+
Retailer 9
-
$1,824 AUD
$1,281 USD
View
B+
Retailer 10
-
$1,859 AUD
$1,306 USD
View
B+
Retailer 11
-
$1,919 AUD
$1,348 USD
View
B
Retailer 12
-
$2,817 AUD
$1,979 USD
View
B
Retailer 13
-
$3,216 AUD
$2,259 USD
View
B
Retailer 14
-
$4,516 AUD
£2,498 GBP
View
B
Retailer 15
-
$5,082 AUD
$3,570 USD
View
Most Expensive
B
Blue Nile
25246473 · Oct 31
$5,149 AUD
$3,617 USD
View
15 more retailers have this diamond
Prices start from $987 AUDSave up to $4,163 AUD

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
$987 AUD