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Round|Lab Grown|IGI

1.64ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG787640285

Certificate IGI LG787640285

Diamond specifications and retailer prices

From $1,350 USD
As of October 28, 2026
Save $740 USD (35%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,090 USD at Jared · As of October 28, 2026
View at Jared

About this 1.64ct lab-grown round diamond

This 1.64ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG787640285 or 787640285. Listed at 3 retailers as of October 28, 2026, with prices from $1,350 to $2,090, a $740 spread on the same certified stone. Jared lists it at $2,090. 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

1.64
Carat
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG787640285
Dimensions7.54 × 7.60 mm
L/W Ratio1.01
Top View
7.54 mm7.60 mm1.64 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787640285
Side View
Table 60.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $2,090 USD|Low: $1,350 USD|High: $2,090 USD|Avg: $1,662 USD
Jared
Retailer 2
Retailer 3
July 2, 2026
Retailer 2$1,350 USD
Retailer 3$1,350 USD
Jared$2,090 USD

5 data points across 3 retailers

3 retailers$1,350 USD to $2,090 USD

B
Cheapest Retailer
-
$1,350 USD
B
Retailer 2
-
$1,350 USD
View
Most Expensive
B
Jared
158584889 · Oct 28
$2,090 USD
View
2 more retailers have this diamond
Prices start from $1,350 USDSave up to $740 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.

B
1.64ct Round
$1,350 USD