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Radiant|Lab Grown|IGI

1.65ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG510184285

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG510184285

Diamond specifications and retailer prices

From HK$9,650 HKD
$1,230 USD
As of October 31, 2026
Save HK$16,970 HKD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$28,943 HKD at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 1.65ct lab-grown radiant diamond

This 1.65ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG510184285 or 510184285. Listed at 13 retailers as of October 31, 2026, with a 176% 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

1.65
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.1°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510184285
Dimensions8.16 × 6.15 × 3.88 mm
L/W Ratio1.33
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.16 mm6.15 mm1.65 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510184285
Side View
Table 68.0%Crown 39.1°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 63.1%

Caratlytics Score

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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 31
Current: HK$21,705 HKD|Low: HK$9,650 HKD|High: HK$44,689 HKD|Avg: HK$23,999 HKD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5HK$9,650 HKD
Retailer 4HK$13,314 HKD
Retailer 8HK$14,907 HKD
Retailer 6HK$15,440 HKD
Retailer 1HK$21,705 HKD
Retailer 7HK$24,251 HKD
Retailer 3HK$26,620 HKD
Retailer 9HK$42,356 HKD
Retailer 2HK$44,151 HKD

42 data points across 9 retailers

13 retailersHK$9,650 HKD to HK$26,620 HKD

B
Cheapest Retailer
-
HK$9,650 HKD
$1,230 USD
B
Retailer 2
-
HK$13,314 HKD
$1,697 USD
View
B
Retailer 3
-
HK$14,483 HKD
$1,846 USD
View
B
Retailer 4
-
HK$14,907 HKD
$1,900 USD
View
Final sale: no returns
B
Retailer 5
-
HK$15,440 HKD
$1,968 USD
View
Retailer 6
-
HK$15,440 HKD
$1,968 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
HK$16,751 HKD
$2,135 USD
View
B
Retailer 8
-
HK$21,705 HKD
£2,178 GBP
View
B
Retailer 9
-
HK$24,251 HKD
$3,091 USD
View
B
Retailer 10
-
HK$26,620 HKD
$3,393 USD
View
Most Expensive
NZ Jewellers
230c0e69-5f14-49ce-b077-d8d716cbaf8f · Nov 1
HK$28,943 HKD
$3,689 USD
View
Price under review
10 more retailers have this diamond
Prices start from HK$9,650 HKDSave up to HK$16,970 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
1.65ct Radiant
HK$9,650 HKD