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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 $179 USD
As of October 27, 2026
Save $1,541 USD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,720 USD 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 $179 to $1,720, a $1,541 spread on the same certified stone. Do Amore Diamonds lists it at $1,720. 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
Color
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: $1,720 USD|Low: $143 USD|High: $1,760 USD|Avg: $695 USD|-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$179 USD
Retailer 13$205 USD
Retailer 10$207 USD
Retailer 9$393 USD
Retailer 4$436 USD
Retailer 5$545 USD
Retailer 14$551 USD
Retailer 6$664 USD
Retailer 8$753 USD
Retailer 3$779 USD
Retailer 12$787 USD
Retailer 7$965 USD
Retailer 2$1,151 USD
Do Amore Diamonds$1,720 USD

16 data points across 14 retailers

9 retailers$179 USD to $1,720 USD

A
Cheapest Retailer
-
$179 USD
A
Retailer 2
-
$205 USD
View
Final sale: no returns
A
Retailer 3
-
$207 USD
View
B+
Retailer 4
-
$393 USD
View
B+
Retailer 5
-
$753 USD
View
B+
Retailer 6
-
$787 USD
View
B
Retailer 7
-
$965 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$1,151 USD
£906 GBP
View
Most Expensive
B
Do Amore Diamonds
27-07695C7B0 · Oct 29
$1,720 USD
View
8 more retailers have this diamond
Prices start from $179 USDSave up to $1,541 USD

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
$179 USD