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Round|Lab Grown|IGI

1.70ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG447001700

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447001700

Diamond specifications and retailer prices

From $1,230 USD
As of October 29, 2026
Save $3,686 USD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,916 USD at MOH London · As of October 29, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001700 or 447001700. Listed at 12 retailers as of October 29, 2026, with prices from $1,230 to $4,916, a $3,686 spread on the same certified stone. MOH London lists it at $4,916. 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
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001700
Dimensions7.71 × 7.75 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.71 mm7.75 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001700
Side View
Table 59.5%Crown 32.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.3%

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: $4,916 USD|Low: $1,048 USD|High: $4,956 USD|Avg: $2,080 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 7$1,230 USD
Retailer 6$1,312 USD
Retailer 10$1,428 USD
Retailer 12$1,469 USD
Retailer 8$1,522 USD
Retailer 13$1,522 USD
Retailer 3$1,695 USD
Retailer 2$1,998 USD
Retailer 5$2,103 USD
Retailer 9$2,408 USD
Retailer 4$2,837 USD
Retailer 11$2,853 USD
MOH London$4,916 USD

38 data points across 13 retailers

12 retailers$1,230 USD to $4,916 USD

A
Cheapest Retailer
-
$1,230 USD
A
Retailer 2
-
$1,312 USD
View
B+
Retailer 3
-
$1,428 USD
View
B+
Retailer 4
-
$1,469 USD
View
Final sale: no returns
Retailer 5
-
$1,522 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,522 USD
View
B+
Retailer 7
-
$1,695 USD
View
B+
Retailer 8
-
$1,998 USD
£1,573 GBP
View
B
Retailer 9
-
$2,408 USD
View
B
Retailer 10
-
$2,837 USD
View
B
Retailer 11
-
$2,853 USD
View
Most Expensive
B
MOH London
LG447001700 · Oct 29
$4,916 USD
£3,871 GBP
View
11 more retailers have this diamond
Prices start from $1,230 USDSave up to $3,686 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