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Round|Lab Grown|IGI

1.73ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG451057633

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057633

Diamond specifications and retailer prices

From HK$7,532 HKD
$960 USD
As of October 30, 2026
Save HK$16,547 HKD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$36,887 HKD at MOH London · As of October 21, 2026
View at MOH London

About this 1.73ct lab-grown round diamond

This 1.73ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057633 or 451057633. Listed at 10 retailers as of October 30, 2026, with a 220% 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

1.73
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057633
Dimensions7.67 × 7.63 × 4.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.67 mm7.63 mm1.73 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057633
Side View
Table 60.0%Crown 36.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.7%

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 30
Current: HK$36,887 HKD|Low: HK$7,532 HKD|High: HK$37,186 HKD|Avg: HK$18,378 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 30, 2026
Retailer 2HK$7,532 HKD
Retailer 5HK$11,078 HKD
Retailer 9HK$12,051 HKD
Retailer 8HK$12,404 HKD
Retailer 6HK$12,851 HKD
Retailer 3HK$14,300 HKD
Retailer 12HK$17,582 HKD
Retailer 7HK$20,273 HKD
Retailer 11HK$23,317 HKD
Retailer 10HK$24,078 HKD
Retailer 4HK$28,762 HKD
MOH LondonHK$36,887 HKD

15 data points across 12 retailers

10 retailersHK$7,532 HKD to HK$24,078 HKD

A
Cheapest Retailer
-
HK$7,532 HKD
$960 USD
B+
Retailer 2
-
HK$11,078 HKD
$1,412 USD
View
B+
Retailer 3
-
HK$12,051 HKD
$1,536 USD
View
B+
Retailer 4
-
HK$12,404 HKD
$1,581 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$12,851 HKD
$1,638 USD
View
Retailer 6
-
HK$12,851 HKD
$1,638 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
HK$20,273 HKD
$2,584 USD
View
B
Retailer 8
-
HK$23,317 HKD
$2,972 USD
View
B
Retailer 9
-
HK$24,078 HKD
$3,069 USD
View
Most Expensive
MOH London
LG451057633 · Oct 21
HK$36,887 HKD
£3,702 GBP
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from HK$7,532 HKDSave up to HK$16,547 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
1.73ct Round
HK$7,532 HKD