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Round|Lab Grown|IGI

21.16ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG724557816

Shape and cutting style on the report: Round brilliant

Certificate IGI LG724557816

Diamond specifications and retailer prices

From HK$82,648 HKD
£8,295 GBP
As of November 2, 2026
Save HK$247,186 HKD (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$329,833 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 21.16ct lab-grown round diamond

This 21.16ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG724557816 or 724557816. Listed at 18 retailers as of October 31, 2026, with prices from HK$82,648 to HK$329,833, a HK$247,186 spread on the same certified stone. Brilliant Earth lists it at HK$329,833. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

21.16
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG724557816
Dimensions17.91 × 17.87 × 10.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.91 mm17.87 mm21.16 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG724557816
Side View
Table 58.0%Crown 33.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.6%

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: Nov 2
Current: HK$329,833 HKD|Low: HK$82,623 HKD|High: HK$339,091 HKD|Avg: HK$158,621 HKD|-2.7%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 2HK$82,648 HKD
Retailer 16HK$95,812 HKD
Retailer 14HK$96,188 HKD
Retailer 8HK$99,648 HKD
Retailer 6HK$101,202 HKD
Retailer 5HK$104,160 HKD
Retailer 4HK$111,142 HKD
Retailer 9HK$111,142 HKD
Retailer 13HK$111,174 HKD
Retailer 15HK$117,921 HKD
Retailer 3HK$118,517 HKD
Retailer 11HK$129,353 HKD
Retailer 10HK$187,134 HKD
Retailer 12HK$209,465 HKD
Retailer 17HK$234,037 HKD
Retailer 7HK$321,702 HKD
Brilliant EarthHK$329,833 HKD

35 data points across 17 retailers

18 retailersHK$82,648 HKD to HK$329,833 HKD

A
Cheapest Retailer
-
HK$82,648 HKD
£8,295 GBP
B+
Retailer 2
-
HK$95,812 HKD
$12,212 USD
View
Retailer 3
-
HK$96,188 HKD
$12,260 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
HK$99,648 HKD
$12,701 USD
View
B+
Retailer 5
-
HK$101,202 HKD
$12,899 USD
View
B+
Retailer 6
-
HK$104,160 HKD
$13,276 USD
View
B+
Retailer 7
-
HK$111,142 HKD
$14,166 USD
View
Retailer 8
-
HK$111,142 HKD
$14,166 USD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
HK$111,174 HKD
$14,170 USD
View
B+
Retailer 10
-
HK$117,921 HKD
$15,030 USD
View
B+
Retailer 11
-
HK$118,517 HKD
$15,106 USD
View
B+
Retailer 12
-
HK$129,353 HKD
£12,982 GBP
View
B
Retailer 13
-
HK$160,037 HKD
$20,398 USD
View
Final sale: no returns
B
Retailer 14
-
HK$187,134 HKD
€22,716 EUR
View
B
Retailer 15
-
HK$209,465 HKD
A$41,074 AUD
View
B
Retailer 16
-
HK$234,037 HKD
$29,830 USD
View
B
Retailer 17
-
HK$321,702 HKD
$41,004 USD
View
Most Expensive
B
Brilliant Earth
15459111A · Oct 31
HK$329,833 HKD
$42,040 USD
View
17 more retailers have this diamond
Prices start from HK$82,648 HKDSave up to HK$247,186 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
21.16ct Round
HK$82,648 HKD