CaratHunter
Plans
Round|Lab Grown|IGI

1.70ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451056287

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056287

Diamond specifications and retailer prices

From HK$9,650 HKD
$1,230 USD
As of October 28, 2026
Save HK$28,921 HKD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$38,571 HKD 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 LG451056287 or 451056287. Listed at 12 retailers as of October 28, 2026, with prices from HK$9,650 to HK$38,571, a HK$28,921 spread on the same certified stone. MOH London lists it at HK$38,571. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056287
Dimensions7.57 × 7.62 × 4.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.57 mm7.62 mm1.70 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056287
Side View
Table 57.5%Crown 34.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.1%

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 28
Current: HK$38,571 HKD|Low: HK$8,222 HKD|High: HK$38,830 HKD|Avg: HK$17,631 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
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 8HK$9,650 HKD
Retailer 7HK$10,294 HKD
Retailer 11HK$11,204 HKD
Retailer 13HK$11,525 HKD
Retailer 9HK$11,941 HKD
Retailer 14HK$11,941 HKD
Retailer 3HK$13,298 HKD
Retailer 2HK$15,677 HKD
Retailer 5HK$16,500 HKD
Retailer 10HK$18,892 HKD
Retailer 4HK$22,258 HKD
Retailer 12HK$22,384 HKD
Retailer 6HK$34,167 HKD
MOH LondonHK$38,571 HKD

23 data points across 14 retailers

12 retailersHK$9,650 HKD to HK$38,571 HKD

A
Cheapest Retailer
-
HK$9,650 HKD
$1,230 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$11,525 HKD
$1,469 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$11,941 HKD
$1,522 USD
View
Retailer 6
-
HK$11,941 HKD
$1,522 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
HK$13,298 HKD
$1,695 USD
View
B+
Retailer 8
-
HK$15,677 HKD
£1,573 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
LG451056287 · Oct 29
HK$38,571 HKD
£3,871 GBP
View
11 more retailers have this diamond
Prices start from HK$9,650 HKDSave up to HK$28,921 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$9,650 HKD