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Radiant|Lab Grown|IGI

1.65ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG818654486

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

Certificate IGI LG818654486

Diamond specifications and retailer prices

From $840 USD
As of November 2, 2026
Save $4,700 USD (85%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,540 USD at Do Amore Diamonds · As of November 2, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818654486 or 818654486. Listed at 8 retailers as of November 2, 2026, with prices from $840 to $5,540, a $4,700 spread on the same certified stone. Do Amore Diamonds lists it at $5,540. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654486
Dimensions6.89 × 6.75 × 4.48 mm
L/W Ratio1.02
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.89 mm6.75 mm1.65 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654486
Side View
Table 65.0%Crown 42°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 66.4%

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: Nov 2
Current: $5,540 USD|Low: $840 USD|High: $7,740 USD|Avg: $3,059 USD|-5.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8$840 USD
Retailer 6$1,028 USD
Retailer 5$1,186 USD
Retailer 2$1,341 USD
Retailer 3$3,139 USD
Retailer 7$3,935 USD
Retailer 4$4,120 USD
Retailer 9$4,161 USD
Do Amore Diamonds$5,540 USD

20 data points across 9 retailers

8 retailers$840 USD to $5,540 USD

A
Cheapest Retailer
-
$840 USD
A
Retailer 2
-
$1,028 USD
View
B+
Retailer 3
-
$1,186 USD
View
B+
Retailer 4
-
$1,341 USD
€1,277 EUR
View
B
Retailer 5
-
$3,139 USD
£2,472 GBP
View
B
Retailer 6
-
$3,935 USD
View
B
Retailer 7
-
$4,120 USD
View
Most Expensive
B
Do Amore Diamonds
27-F1202F580 · Nov 2
$5,540 USD
View
7 more retailers have this diamond
Prices start from $840 USDSave up to $4,700 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
$840 USD