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Radiant|Lab Grown|IGI

5.55ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG615380127

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG615380127

Diamond specifications and retailer prices

From $739 AUD
$519 USD
As of October 30, 2026
Save $5,824 AUD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,563 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 5.55ct lab-grown radiant diamond

This 5.55ct lab-grown radiant sits in the over five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG615380127 or 615380127. Listed at 11 retailers as of October 30, 2026, with prices from $739 to $6,563, a $5,824 spread on the same certified stone. Do Amore Diamonds lists it at $6,563. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG615380127
Dimensions12.47 × 8.69 × 5.94 mm
L/W Ratio1.43
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.47 mm8.69 mm5.55 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG615380127
Side View
Table 64.0%Crown 41.7°Girdle: MED-STKPavilion 36°Culet: NoneDepth 68.4%

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 30
Current: $6,563 AUD|Low: $739 AUD|High: $9,339 AUD|Avg: $3,192 AUD|-11.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9$739 AUD
Retailer 7$827 AUD
Retailer 4$1,074 AUD
Retailer 11$1,419 AUD
Retailer 6$1,424 AUD
Retailer 8$2,363 AUD
Retailer 3$2,605 AUD
Retailer 10$2,658 AUD
Retailer 2$4,388 AUD
Retailer 5$4,812 AUD
Do Amore Diamonds$6,563 AUD

28 data points across 11 retailers

11 retailers$739 AUD to $6,563 AUD

A
Cheapest Retailer
-
$739 AUD
$519 USD
A
Retailer 2
-
$827 AUD
$581 USD
View
A
Retailer 3
-
$1,074 AUD
£594 GBP
View
B+
Retailer 4
-
$1,419 AUD
$997 USD
View
B+
Retailer 5
-
$1,424 AUD
$1,000 USD
View
B+
Retailer 6
-
$2,363 AUD
$1,660 USD
View
B+
Retailer 7
-
$2,605 AUD
$1,830 USD
View
B+
Retailer 8
-
$2,658 AUD
$1,867 USD
View
B
Retailer 9
-
$4,388 AUD
£2,427 GBP
View
B
Retailer 10
-
$4,812 AUD
$3,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-AE0412987 · Nov 2
$6,563 AUD
$4,610 USD
View
10 more retailers have this diamond
Prices start from $739 AUDSave up to $5,824 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 Radiant
$739 AUD