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Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG528208181

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

Certificate IGI LG528208181

Diamond specifications and retailer prices

From $508 AUD
$357 USD
As of October 30, 2026
Save $2,495 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,003 AUD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG528208181 or 528208181. Listed at 14 retailers as of October 30, 2026, with prices from $508 to $3,003, a $2,495 spread on the same certified stone. Do Amore Diamonds lists it at $3,003. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528208181
Dimensions8.41 × 5.70 × 3.84 mm
L/W Ratio1.48
Culet sizePointed
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
8.41 mm5.70 mm1.55 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528208181
Side View
Table 65.5%Crown 42°Girdle: MediumPavilion 35.7°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,003 AUD|Low: $444 AUD|High: $16,768 AUD|Avg: $3,344 AUD|+30.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$508 AUD
Retailer 7$656 AUD
Retailer 2$812 AUD
Retailer 5$858 AUD
Retailer 6$1,620 AUD
Retailer 3$1,725 AUD
Do Amore Diamonds$3,003 AUD
Retailer 8$16,768 AUD

42 data points across 8 retailers

14 retailers$508 AUD to $3,003 AUD

Retailer 1
-
$306 AUD
$215 USD
Price last confirmed 13 days ago
Retailer 2
-
$356 AUD
$250 USD
View
Price last confirmed 16 days ago
Retailer 3
-
$380 AUD
$267 USD
View
Price last confirmed 14 days ago
Retailer 4
-
$380 AUD
$267 USD
View
Price last confirmed 12 days ago
B
Retailer 5
-
$508 AUD
$357 USD
View
B+
Retailer 6
-
$656 AUD
€439 EUR
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$812 AUD
£449 GBP
View
B+
Retailer 8
-
$858 AUD
$603 USD
View
B
Retailer 9
-
$1,064 AUD
£589 GBP
View
Retailer 10
-
$1,349 AUD
$948 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
$1,620 AUD
$1,138 USD
View
B
Retailer 12
-
$1,725 AUD
£954 GBP
View
C
Retailer 13
-
$2,363 AUD
$1,660 USD
View
Most Expensive
C
Do Amore Diamonds
27-41C0A660E · Oct 30
$3,003 AUD
$2,110 USD
View
13 more retailers have this diamond
Prices start from $508 AUDSave up to $2,495 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.

B+
1.55ct Radiant
$508 AUD