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Round|Lab Grown|IGI

1.67ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG764636382

Shape and cutting style on the report: Round brilliant

Certificate IGI LG764636382

Diamond specifications and retailer prices

From $231 USD
As of October 29, 2026
Save $1,009 USD (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,240 USD at Brilliant Earth · As of October 22, 2026
View at Brilliant Earth

About this 1.67ct lab-grown round diamond

This 1.67ct 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 LG764636382 or 764636382. Listed at 17 retailers as of October 22, 2026, with prices from $231 to $1,240, a $1,009 spread on the same certified stone. Brilliant Earth lists it at $1,240. 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

1.67
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764636382
Dimensions7.63 × 7.65 × 4.68 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
7.63 mm7.65 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG764636382
Side View
Table 58.0%Crown 34.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.2%

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 29
Current: $1,240 USD|Low: $221 USD|High: $1,270 USD|Avg: $553 USD|-2.4%
Brilliant Earth
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$231 USD
Retailer 3$258 USD
Retailer 5$267 USD
Retailer 14$286 USD
Retailer 12$385 USD
Retailer 9$474 USD
Retailer 8$496 USD
Retailer 2$536 USD
Retailer 4$545 USD
Retailer 11$730 USD
Retailer 10$740 USD
Retailer 6$919 USD
Retailer 7$1,152 USD
Brilliant Earth$1,240 USD

43 data points across 14 retailers

17 retailers$231 USD to $1,240 USD

A
Cheapest Retailer
-
$231 USD
A
Retailer 2
-
$258 USD
View
Final sale: no returns
A
Retailer 3
-
$267 USD
View
A
Retailer 4
-
$286 USD
View
A
Retailer 5
-
$286 USD
View
B+
Retailer 6
-
$385 USD
View
A
Retailer 7
-
$474 USD
€451 EUR
View
A
Retailer 8
-
$496 USD
£391 GBP
View
A
Retailer 9
-
$509 USD
View
A
Retailer 10
-
$536 USD
£422 GBP
View
B+
Retailer 11
-
$545 USD
View
B+
Retailer 12
-
$730 USD
View
B+
Retailer 13
-
$740 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$919 USD
View
B
Retailer 15
-
$972 USD
View
B
Retailer 16
-
$1,152 USD
£907 GBP
View
Most Expensive
B
Brilliant Earth
21313425A · Oct 22
$1,240 USD
View
16 more retailers have this diamond
Prices start from $231 USDSave up to $1,009 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
1.67ct Round
$231 USD