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Oval|Lab Grown|IGI

1.70ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451056578

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056578

Diamond specifications and retailer prices

From HK$6,669 HKD
$850 USD
As of October 29, 2026
Save HK$14,075 HKD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$34,007 HKD at MOH London · As of October 21, 2026
View at MOH London

About this 1.7ct lab-grown oval diamond

This 1.7ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056578 or 451056578. Listed at 10 retailers as of October 29, 2026, with a 211% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056578
Dimensions9.40 × 6.73 × 4.21 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.40 mm6.73 mm1.70 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056578
Side View
Table 57.0%Crown 36.5°Girdle: MED-VTKPavilion 40.7°Culet: NoneDepth 62.6%

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 29
Current: HK$34,007 HKD|Low: HK$6,669 HKD|High: HK$34,236 HKD|Avg: HK$15,946 HKD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 21, 2026
Retailer 4HK$6,669 HKD
Retailer 2HK$9,077 HKD
Retailer 8HK$9,878 HKD
Retailer 9HK$10,160 HKD
Retailer 5HK$10,529 HKD
Retailer 11HK$15,040 HKD
Retailer 6HK$16,735 HKD
Retailer 7HK$19,740 HKD
Retailer 10HK$20,744 HKD
Retailer 3HK$23,566 HKD
MOH LondonHK$34,007 HKD

13 data points across 11 retailers

10 retailersHK$6,669 HKD to HK$20,744 HKD

A
Cheapest Retailer
-
HK$6,669 HKD
$850 USD
A
Retailer 2
-
HK$9,077 HKD
$1,157 USD
View
B+
Retailer 3
-
HK$9,878 HKD
$1,259 USD
View
B+
Retailer 4
-
HK$10,160 HKD
$1,295 USD
View
Final sale: no returns
Retailer 5
-
HK$10,529 HKD
$1,342 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
HK$10,529 HKD
$1,342 USD
View
B
Retailer 7
-
HK$16,735 HKD
$2,133 USD
View
B
Retailer 8
-
HK$19,740 HKD
$2,516 USD
View
B
Retailer 9
-
HK$20,744 HKD
$2,644 USD
View
Most Expensive
MOH London
LG451056578 · Oct 21
HK$34,007 HKD
£3,413 GBP
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from HK$6,669 HKDSave up to HK$14,075 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 Oval
HK$6,669 HKD