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Round|Lab Grown|IGI

1.70ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG496134889

Shape and cutting style on the report: Round brilliant

Certificate IGI LG496134889

Diamond specifications and retailer prices

From $1,230 USD
As of October 28, 2026
Save $3,374 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,604 USD at MOH London · As of October 27, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496134889 or 496134889. Listed at 10 retailers as of October 27, 2026, with prices from $1,230 to $4,604, a $3,374 spread on the same certified stone. MOH London lists it at $4,604. 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

1.70
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496134889
Dimensions7.57 × 7.61 × 4.71 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.57 mm7.61 mm1.70 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496134889
Side View
Table 60.0%Crown 34.4°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.0%

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 28
Current: $4,604 USD|Low: $1,230 USD|High: $4,658 USD|Avg: $2,506 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 27, 2026
Retailer 2$1,230 USD
Retailer 4$1,510 USD
Retailer 5$1,554 USD
Retailer 7$2,207 USD
Retailer 3$2,542 USD
Retailer 6$2,921 USD
Retailer 8$3,604 USD
MOH London$4,604 USD

12 data points across 8 retailers

10 retailers$1,230 USD to $4,604 USD

A
Cheapest Retailer
-
$1,230 USD
B+
Retailer 2
-
$1,388 USD
View
B+
Retailer 3
-
$1,510 USD
View
B+
Retailer 4
-
$1,554 USD
View
Final sale: no returns
Retailer 5
-
$1,610 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,610 USD
View
B
Retailer 7
-
$2,542 USD
View
B
Retailer 8
-
$2,921 USD
View
B
Retailer 9
-
$3,017 USD
View
Most Expensive
B
MOH London
LG496134889 · Oct 27
$4,604 USD
£3,625 GBP
View
9 more retailers have this diamond
Prices start from $1,230 USDSave up to $3,374 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
1.70ct Round
$1,230 USD