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1.68ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG648444502

Shape and cutting style on the report: Round brilliant

Certificate IGI LG648444502

Diamond specifications and retailer prices

From $715 USD
As of October 25, 2026
Save $5 USD (1%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $825 USD at Rare Carat · As of October 7, 2026
View at Rare Carat

About this 1.68ct lab-grown round diamond

This 1.68ct lab-grown round 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 LG648444502 or 648444502. Listed at 3 retailers as of October 25, 2026, with a relatively tight 1% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.68
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648444502
Dimensions7.60 × 7.63 × 4.70 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.60 mm7.63 mm1.68 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648444502
Side View
Table 57.0%Crown 35°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 25
Current: $720 USD|Low: $474 USD|High: $825 USD|Avg: $607 USD|-12.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 21, 2026
Retailer 5$474 USD
Retailer 2$601 USD
Retailer 3$601 USD
Retailer 4$609 USD
Rare Carat$720 USD

4 data points across 5 retailers

3 retailers$715 USD to $720 USD

B
Cheapest Retailer
-
$715 USD
B+
Retailer 2
-
$720 USD
View
Most Expensive
B
Rare Carat
L1500021 · Oct 7
$825 USD
View
Price last confirmed 21 days ago
2 more retailers have this diamond
Prices start from $715 USDSave up to $5 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+
1.68ct Round
$715 USD