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Round|Lab Grown|IGI

1.65ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG646456206

Shape and cutting style on the report: Round brilliant

Certificate IGI LG646456206

Diamond specifications and retailer prices

From $199 USD
As of October 29, 2026
Save $1,901 USD (91%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,100 USD at Jared · As of October 28, 2026
View at Jared

About this 1.65ct lab-grown round diamond

This 1.65ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG646456206 or 646456206. Listed at 12 retailers as of October 28, 2026, with prices from $199 to $2,100, a $1,901 spread on the same certified stone. Jared lists it at $2,100. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646456206
Dimensions7.68 × 7.62 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.68 mm7.62 mm1.65 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646456206
Side View
Table 59.0%Crown 34.2°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $427 USD|Low: $168 USD|High: $1,980 USD|Avg: $749 USD|-0.8%
Retailer 1
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 13$199 USD
Retailer 2$226 USD
Retailer 12$231 USD
Retailer 1$427 USD
Retailer 11$428 USD
Retailer 5$586 USD
Retailer 4$604 USD
Retailer 6$610 USD
Retailer 8$797 USD
Retailer 9$876 USD
Retailer 14$1,068 USD
Retailer 7$1,093 USD
Retailer 3$1,450 USD
Retailer 10$1,910 USD

39 data points across 14 retailers

12 retailers$199 USD to $2,100 USD

A
Cheapest Retailer
-
$199 USD
A
Retailer 2
-
$226 USD
View
Final sale: no returns
A
Retailer 3
-
$231 USD
View
A
Retailer 4
-
$427 USD
£336 GBP
View
B+
Retailer 5
-
$428 USD
View
B+
Retailer 6
-
$797 USD
View
B+
Retailer 7
-
$876 USD
View
B
Retailer 8
-
$1,068 USD
View
B
Retailer 9
-
$1,093 USD
£861 GBP
View
B
Retailer 10
-
$1,450 USD
View
B
Retailer 11
-
$1,910 USD
View
Most Expensive
B
Jared
152307217 · Oct 28
$2,100 USD
View
11 more retailers have this diamond
Prices start from $199 USDSave up to $1,901 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 Round
$199 USD