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Radiant|Lab Grown|IGI

1.00ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG720540640

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

Certificate IGI LG720540640

Diamond specifications and retailer prices

From HK$1,875 HKD
$239 USD
As of October 30, 2026
Save HK$13,569 HKD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$18,516 HKD at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG720540640 or 720540640. Listed at 23 retailers as of October 27, 2026, with a 724% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.9°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720540640
Dimensions7.07 × 4.87 × 3.40 mm
L/W Ratio1.45
Culet sizePointed
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
7.07 mm4.87 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG720540640
Side View
Table 65.0%Crown 39.9°Girdle: STK-THKPavilion 35.8°Culet: NoneDepth 69.8%

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$18,516 HKD|Low: HK$1,805 HKD|High: HK$19,065 HKD|Avg: HK$5,241 HKD|-2.9%
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
November 1, 2026
Retailer 14HK$1,875 HKD
Retailer 10HK$2,095 HKD
Retailer 5HK$2,181 HKD
Retailer 3HK$2,330 HKD
Retailer 6HK$2,330 HKD
Retailer 2HK$2,398 HKD
Retailer 15HK$3,138 HKD
Retailer 12HK$4,001 HKD
Retailer 7HK$4,135 HKD
Retailer 9HK$4,193 HKD
Retailer 8HK$4,373 HKD
Retailer 13HK$6,151 HKD
Retailer 4HK$7,485 HKD
Retailer 11HK$9,386 HKD
Brilliant EarthHK$18,516 HKD

43 data points across 15 retailers

23 retailersHK$1,875 HKD to HK$15,444 HKD

A
Cheapest Retailer
-
HK$1,875 HKD
$239 USD
A
Retailer 2
-
HK$2,095 HKD
$267 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,181 HKD
$278 USD
View
A
Retailer 4
-
HK$2,330 HKD
$297 USD
View
A
Retailer 5
-
HK$2,330 HKD
$297 USD
View
A
Retailer 6
-
HK$2,398 HKD
£241 GBP
View
A
Retailer 7
-
HK$2,611 HKD
View
A
Retailer 8
-
HK$3,138 HKD
$400 USD
View
A
Retailer 9
-
HK$4,001 HKD
ZAR 8,239 ZAR
View
A
Retailer 10
-
HK$4,135 HKD
$527 USD
View
A
Retailer 11
-
HK$4,193 HKD
€509 EUR
View
A
Retailer 12
-
HK$4,347 HKD
$554 USD
View
A
Retailer 13
-
HK$4,373 HKD
£439 GBP
View
B+
Retailer 14
-
HK$6,151 HKD
$784 USD
View
B+
Retailer 15
-
HK$6,270 HKD
SGD 1,080 SGD
View
B+
Retailer 16
-
HK$7,485 HKD
$954 USD
View
B
Retailer 17
-
HK$7,894 HKD
$1,006 USD
View
B
Retailer 18
-
HK$8,105 HKD
$1,033 USD
View
B
Retailer 19
-
HK$9,087 HKD
£912 GBP
View
B+
Retailer 20
-
HK$9,386 HKD
£942 GBP
View
B
Retailer 21
-
HK$10,350 HKD
$1,319 USD
View
B
Retailer 22
-
HK$15,444 HKD
£1,550 GBP
View
Most Expensive
Brilliant Earth
16383432A · Oct 16
HK$18,516 HKD
$2,360 USD
View
Price last confirmed 15 days ago
22 more retailers have this diamond
Prices start from HK$1,875 HKDSave up to HK$13,569 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
1.00ct Radiant
HK$1,875 HKD