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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

VG • D/SI2 • IGI LG472171921

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472171921

Diamond specifications and retailer prices

From HK$5,430 HKD
$692 USD
As of October 29, 2026
Save HK$4,818 HKD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$15,512 HKD at Friendly Diamonds · As of October 28, 2026
View at Friendly Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG472171921 or 472171921. Listed at 11 retailers as of October 28, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.3°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472171921
Dimensions6.22 × 6.24 × 4.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.22 mm6.24 mm1.00 ctD / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG472171921
Side View
Table 53.5%Crown 37.3°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 64.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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$15,512 HKD|Low: HK$4,331 HKD|High: HK$25,032 HKD|Avg: HK$9,299 HKD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 4HK$5,430 HKD
Retailer 9HK$5,908 HKD
Retailer 8HK$6,073 HKD
Retailer 5HK$6,120 HKD
Retailer 6HK$6,301 HKD
Retailer 2HK$10,055 HKD
Retailer 7HK$10,247 HKD
Friendly DiamondsHK$15,512 HKD
Retailer 3HK$24,862 HKD

39 data points across 9 retailers

11 retailersHK$5,430 HKD to HK$10,247 HKD

B
Cheapest Retailer
-
HK$5,430 HKD
$692 USD
B
Retailer 2
-
HK$5,908 HKD
$753 USD
View
B
Retailer 3
-
HK$6,073 HKD
$774 USD
View
Final sale: no returns
B
Retailer 4
-
HK$6,120 HKD
$780 USD
View
B
Retailer 5
-
HK$6,301 HKD
$803 USD
View
Retailer 6
-
HK$6,301 HKD
$803 USD
View
Price last confirmed 13 days ago
B
Retailer 7
-
HK$10,055 HKD
£1,009 GBP
View
B
Retailer 8
-
HK$10,247 HKD
$1,306 USD
View
Most Expensive
Friendly Diamonds
1590707 · Oct 28
HK$15,512 HKD
$1,977 USD
View
Price under review
8 more retailers have this diamond
Prices start from HK$5,430 HKDSave up to HK$4,818 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.

B
1.00ct Round
HK$5,430 HKD