Round|Lab Grown|IGI

1.67ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG754510366

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754510366

Diamond specifications and retailer prices

From $199 USD
As of November 1, 2026
Save $1,331 USD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,530 USD at Brilliant Earth · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG754510366 or 754510366. Listed at 13 retailers as of November 1, 2026, with prices from $199 to $1,530, a $1,331 spread on the same certified stone. Brilliant Earth lists it at $1,530. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.67
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754510366
Dimensions7.52 × 7.44 × 4.76 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
7.52 mm7.44 mm1.67 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754510366
Side View
Table 58.0%Crown 34.1°Girdle: STK-THKPavilion 41.7°Culet: NoneDepth 63.6%

Caratlytics Score

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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 1
Current: $1,530 USD|Low: $191 USD|High: $1,530 USD|Avg: $482 USD
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
November 2, 2026
Retailer 6$199 USD
Retailer 13$231 USD
Retailer 8$247 USD
Retailer 5$250 USD
Retailer 4$420 USD
Retailer 3$431 USD
Retailer 2$452 USD
Retailer 12$510 USD
Retailer 11$539 USD
Retailer 9$795 USD
Retailer 10$798 USD
Retailer 7$1,157 USD
Brilliant Earth$1,530 USD

42 data points across 13 retailers

13 retailers$199 USD to $1,530 USD

A
Cheapest Retailer
-
$199 USD
A
Retailer 2
-
$231 USD
View
A
Retailer 3
-
$247 USD
View
Retailer 4
-
$250 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$420 USD
€400 EUR
View
B+
Retailer 6
-
$431 USD
View
B+
Retailer 7
-
$452 USD
£356 GBP
View
B+
Retailer 8
-
$510 USD
View
B+
Retailer 9
-
$539 USD
View
B
Retailer 10
-
$795 USD
View
B+
Retailer 11
-
$798 USD
View
B
Retailer 12
-
$1,157 USD
£911 GBP
View
Most Expensive
B
Brilliant Earth
18038583A · Nov 1
$1,530 USD
View
12 more retailers have this diamond
Prices start from $199 USDSave up to $1,331 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
$199 USD