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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 HK$7,532 HKD
$960 USD
As of October 31, 2026
Save HK$30,840 HKD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$38,372 HKD 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 HK$7,532 to HK$38,372, a HK$30,840 spread on the same certified stone. MOH London lists it at HK$38,372. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$38,372 HKD|Low: HK$7,532 HKD|High: HK$38,830 HKD|Avg: HK$16,402 HKD
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 6HK$7,532 HKD
Retailer 7HK$10,294 HKD
Retailer 11HK$11,204 HKD
Retailer 10HK$11,533 HKD
Retailer 8HK$11,941 HKD
Retailer 13HK$11,941 HKD
Retailer 3HK$13,298 HKD
Retailer 2HK$15,630 HKD
Retailer 5HK$16,500 HKD
Retailer 9HK$18,892 HKD
Retailer 4HK$22,258 HKD
Retailer 12HK$22,384 HKD
MOH LondonHK$38,372 HKD

24 data points across 13 retailers

12 retailersHK$7,532 HKD to HK$38,372 HKD

A
Cheapest Retailer
-
HK$7,532 HKD
$960 USD
A
Retailer 2
-
HK$10,294 HKD
$1,312 USD
View
B+
Retailer 3
-
HK$11,204 HKD
$1,428 USD
View
B+
Retailer 4
-
HK$11,533 HKD
$1,470 USD
View
Final sale: no returns
Retailer 5
-
HK$11,941 HKD
$1,522 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
HK$11,941 HKD
$1,522 USD
View
B+
Retailer 7
-
HK$13,298 HKD
$1,695 USD
View
B+
Retailer 8
-
HK$15,630 HKD
£1,569 GBP
View
B
Retailer 9
-
HK$18,892 HKD
$2,408 USD
View
B
Retailer 10
-
HK$22,258 HKD
$2,837 USD
View
B
Retailer 11
-
HK$22,384 HKD
$2,853 USD
View
Most Expensive
B
MOH London
LG499125820 · Nov 1
HK$38,372 HKD
£3,851 GBP
View
11 more retailers have this diamond
Prices start from HK$7,532 HKDSave up to HK$30,840 HKD

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
HK$7,532 HKD