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Round|Lab Grown|IGI

1.77ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG442066171

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442066171

Diamond specifications and retailer prices

From $1,000 USD
As of October 31, 2026
Save $4,088 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,088 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.77ct lab-grown round diamond

This 1.77ct 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 LG442066171 or 442066171. Listed at 11 retailers as of October 31, 2026, with prices from $1,000 to $5,088, a $4,088 spread on the same certified stone. MOH London lists it at $5,088. 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

1.77
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442066171
Dimensions7.72 × 7.75 × 4.81 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.72 mm7.75 mm1.77 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442066171
Side View
Table 55.0%Crown 35.8°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 62.2%

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 31
Current: $5,088 USD|Low: $1,000 USD|High: $5,149 USD|Avg: $2,186 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,000 USD
Retailer 3$1,365 USD
Retailer 6$1,529 USD
Retailer 4$1,583 USD
Retailer 7$1,583 USD
Retailer 8$1,755 USD
Retailer 10$2,179 USD
Retailer 5$2,502 USD
Retailer 9$2,951 USD
MOH London$5,088 USD

14 data points across 10 retailers

11 retailers$1,000 USD to $5,088 USD

A
Cheapest Retailer
-
$1,000 USD
B+
Retailer 2
-
$1,365 USD
View
B+
Retailer 3
-
$1,485 USD
View
B+
Retailer 4
-
$1,529 USD
View
Final sale: no returns
Retailer 5
-
$1,583 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,583 USD
View
B+
Retailer 7
-
$1,755 USD
View
B
Retailer 8
-
$2,502 USD
View
B
Retailer 9
-
$2,951 USD
View
B
Retailer 10
-
$2,968 USD
View
Most Expensive
B
MOH London
LG442066171 · Nov 1
$5,088 USD
£4,006 GBP
View
10 more retailers have this diamond
Prices start from $1,000 USDSave up to $4,088 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
1.77ct Round
$1,000 USD