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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 $1,230 NZD
$693 USD
As of November 1, 2026
Save $5,188 NZD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,418 NZD 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 $1,230 to $6,418, a $5,188 spread on the same certified stone. Blue Nile lists it at $6,418. 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: $6,418 NZD|Low: $1,075 NZD|High: $6,418 NZD|Avg: $2,638 NZD
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$1,205 NZD
Retailer 4$1,230 NZD
Retailer 12$1,338 NZD
Retailer 15$1,427 NZD
Retailer 16$1,427 NZD
Retailer 14$1,876 NZD
Retailer 10$2,096 NZD
Retailer 17$2,174 NZD
Retailer 2$2,257 NZD
Retailer 5$2,273 NZD
Retailer 7$2,317 NZD
Retailer 6$2,392 NZD
Retailer 13$3,511 NZD
Retailer 3$4,008 NZD
Retailer 11$5,629 NZD
Retailer 8$6,334 NZD
Blue Nile$6,418 NZD

40 data points across 17 retailers

16 retailers$1,230 NZD to $6,418 NZD

A
Cheapest Retailer
-
$1,230 NZD
$693 USD
A
Retailer 2
-
$1,338 NZD
$754 USD
View
A
Retailer 3
-
$1,427 NZD
$804 USD
View
Retailer 4
-
$1,427 NZD
$804 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$1,876 NZD
£832 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$2,096 NZD
€1,125 EUR
View
B+
Retailer 7
-
$2,174 NZD
$1,225 USD
View
B+
Retailer 8
-
$2,257 NZD
£1,002 GBP
View
B+
Retailer 9
-
$2,273 NZD
$1,281 USD
View
B+
Retailer 10
-
$2,317 NZD
$1,306 USD
View
B+
Retailer 11
-
$2,392 NZD
$1,348 USD
View
B
Retailer 12
-
$3,511 NZD
$1,979 USD
View
B
Retailer 13
-
$4,008 NZD
$2,259 USD
View
B
Retailer 14
-
$5,629 NZD
£2,498 GBP
View
B
Retailer 15
-
$6,334 NZD
$3,570 USD
View
Most Expensive
B
Blue Nile
25246473 · Oct 31
$6,418 NZD
$3,617 USD
View
15 more retailers have this diamond
Prices start from $1,230 NZDSave up to $5,188 NZD

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
$1,230 NZD