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Round|Lab Grown|IGI

1.70ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG499125820

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499125820

Diamond specifications and retailer prices

From $1,227 SGD
$960 USD
As of October 31, 2026
Save $5,025 SGD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,252 SGD at MOH London · As of November 1, 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 LG499125820 or 499125820. Listed at 12 retailers as of October 31, 2026, with prices from $1,227 to $6,252, a $5,025 spread on the same certified stone. MOH London lists it at $6,252. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499125820
Dimensions7.71 × 7.75 × 4.64 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
7.71 mm7.75 mm1.70 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499125820
Side View
Table 58.5%Crown 35.4°Girdle: THN-MEDPavilion 40.1°Culet: NoneDepth 60.0%

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: Oct 31
Current: $6,252 SGD|Low: $1,227 SGD|High: $6,327 SGD|Avg: $2,673 SGD
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
November 1, 2026
Retailer 6$1,227 SGD
Retailer 7$1,677 SGD
Retailer 11$1,826 SGD
Retailer 10$1,879 SGD
Retailer 8$1,946 SGD
Retailer 13$1,946 SGD
Retailer 3$2,167 SGD
Retailer 2$2,547 SGD
Retailer 5$2,688 SGD
Retailer 9$3,078 SGD
Retailer 4$3,627 SGD
Retailer 12$3,647 SGD
MOH London$6,252 SGD

24 data points across 13 retailers

12 retailers$1,227 SGD to $6,252 SGD

A
Cheapest Retailer
-
$1,227 SGD
$960 USD
A
Retailer 2
-
$1,677 SGD
$1,312 USD
View
B+
Retailer 3
-
$1,826 SGD
$1,428 USD
View
B+
Retailer 4
-
$1,879 SGD
$1,470 USD
View
Final sale: no returns
Retailer 5
-
$1,946 SGD
$1,522 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$1,946 SGD
$1,522 USD
View
B+
Retailer 7
-
$2,167 SGD
$1,695 USD
View
B+
Retailer 8
-
$2,547 SGD
£1,569 GBP
View
B
Retailer 9
-
$3,078 SGD
$2,408 USD
View
B
Retailer 10
-
$3,627 SGD
$2,837 USD
View
B
Retailer 11
-
$3,647 SGD
$2,853 USD
View
Most Expensive
B
MOH London
LG499125820 · Nov 1
$6,252 SGD
£3,851 GBP
View
11 more retailers have this diamond
Prices start from $1,227 SGDSave up to $5,025 SGD

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
$1,227 SGD