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Radiant|Lab Grown|IGI

1.65ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG559296256

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

Certificate IGI LG559296256

Diamond specifications and retailer prices

From $255 AUD
$179 USD
As of October 27, 2026
Save $2,193 AUD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,448 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.65ct lab-grown radiant diamond

This 1.65ct 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 top-tier cut grade and certified by IGI LG559296256 or 559296256. Listed at 9 retailers as of October 27, 2026, with prices from $255 to $2,448, a $2,193 spread on the same certified stone. Do Amore Diamonds lists it at $2,448. 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

1.65
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.1°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG559296256
Dimensions8.41 × 5.89 × 3.95 mm
L/W Ratio1.43
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 mm5.89 mm1.65 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG559296256
Side View
Table 66.5%Crown 49.1°Girdle: MediumPavilion 36°Culet: NoneDepth 67.1%

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 27
Current: $2,448 AUD|Low: $204 AUD|High: $2,505 AUD|Avg: $990 AUD|-2.3%
Do Amore Diamonds
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
October 29, 2026
Retailer 11$255 AUD
Retailer 13$292 AUD
Retailer 10$295 AUD
Retailer 9$559 AUD
Retailer 4$621 AUD
Retailer 5$776 AUD
Retailer 14$784 AUD
Retailer 6$945 AUD
Retailer 8$1,072 AUD
Retailer 3$1,109 AUD
Retailer 12$1,120 AUD
Retailer 7$1,374 AUD
Retailer 2$1,638 AUD
Do Amore Diamonds$2,448 AUD

16 data points across 14 retailers

9 retailers$255 AUD to $2,448 AUD

A
Cheapest Retailer
-
$255 AUD
$179 USD
A
Retailer 2
-
$292 AUD
$205 USD
View
Final sale: no returns
A
Retailer 3
-
$295 AUD
$207 USD
View
B+
Retailer 4
-
$559 AUD
$393 USD
View
B+
Retailer 5
-
$1,072 AUD
$753 USD
View
B+
Retailer 6
-
$1,120 AUD
$787 USD
View
B
Retailer 7
-
$1,374 AUD
$965 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$1,638 AUD
£906 GBP
View
Most Expensive
B
Do Amore Diamonds
27-07695C7B0 · Oct 29
$2,448 AUD
$1,720 USD
View
8 more retailers have this diamond
Prices start from $255 AUDSave up to $2,193 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
1.65ct Radiant
$255 AUD