CaratHunter
Plans
Round|Lab Grown|IGI

1.57ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG407939119

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407939119

Diamond specifications and retailer prices

From HK$10,670 HKD
$1,360 USD
As of October 31, 2026
Save HK$32,773 HKD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$43,443 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407939119 or 407939119. Listed at 12 retailers as of October 29, 2026, with prices from HK$10,670 to HK$43,443, a HK$32,773 spread on the same certified stone. MOH London lists it at HK$43,443. 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

1.57
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407939119
Dimensions7.42 × 7.38 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.42 mm7.38 mm1.57 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407939119
Side View
Table 54.5%Crown 36.3°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.7%

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$43,443 HKD|Low: HK$10,670 HKD|High: HK$43,792 HKD|Avg: HK$24,385 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
October 29, 2026
Retailer 6HK$10,670 HKD
Retailer 5HK$13,047 HKD
Retailer 9HK$14,609 HKD
Retailer 7HK$15,134 HKD
Retailer 4HK$15,817 HKD
Retailer 10HK$16,476 HKD
Retailer 12HK$20,250 HKD
Retailer 8HK$23,780 HKD
Retailer 2HK$26,087 HKD
Retailer 11HK$41,599 HKD
Retailer 3HK$43,314 HKD
MOH LondonHK$43,443 HKD

16 data points across 12 retailers

12 retailersHK$10,670 HKD to HK$43,443 HKD

A
Cheapest Retailer
-
HK$10,670 HKD
$1,360 USD
B+
Retailer 2
-
HK$13,047 HKD
$1,663 USD
View
B+
Retailer 3
-
HK$14,193 HKD
$1,809 USD
View
B+
Retailer 4
-
HK$14,609 HKD
$1,862 USD
View
Final sale: no returns
B
Retailer 5
-
HK$15,134 HKD
$1,929 USD
View
Retailer 6
-
HK$15,134 HKD
$1,929 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
HK$16,476 HKD
$2,100 USD
View
B
Retailer 8
-
HK$23,780 HKD
$3,031 USD
View
B
Retailer 9
-
HK$26,087 HKD
$3,325 USD
View
B
Retailer 10
-
HK$28,362 HKD
$3,615 USD
View
B
Retailer 11
-
HK$41,599 HKD
$5,302 USD
View
Most Expensive
B
MOH London
LG407939119 · Oct 29
HK$43,443 HKD
£4,360 GBP
View
11 more retailers have this diamond
Prices start from HK$10,670 HKDSave up to HK$32,773 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
1.57ct Round
HK$10,670 HKD