Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754507745

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

Certificate IGI LG754507745

Diamond specifications and retailer prices

From HK$2,275 HKD
$290 USD
As of October 30, 2026
Save HK$18,343 HKD (89%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: HK$25,577 HKD at Brilliant Earth · As of October 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754507745 or 754507745. Listed at 33 retailers as of October 30, 2026, with a 806% 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

1.51
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754507745
Dimensions5.72 × 5.72 × 3.74 mm
L/W Ratio1.00
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
5.72 mm5.72 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754507745
Side View
Table 62.0%Crown 42.8°Girdle: MED-STKPavilion 33.2°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$25,577 HKD|Low: HK$2,275 HKD|High: HK$25,577 HKD|Avg: HK$8,575 HKD
Brilliant Earth
Retailer 2
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Retailer 18
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Retailer 20
Retailer 21
Retailer 22
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Retailer 24
November 1, 2026
Retailer 6HK$2,275 HKD
Retailer 10HK$2,722 HKD
Retailer 17HK$2,809 HKD
Retailer 13HK$3,297 HKD
Retailer 24HK$4,001 HKD
Retailer 14HK$4,117 HKD
Retailer 7HK$4,394 HKD
Retailer 11HK$4,864 HKD
Retailer 19HK$5,066 HKD
Retailer 21HK$5,358 HKD
Retailer 18HK$5,566 HKD
Retailer 9HK$6,182 HKD
Retailer 12HK$7,037 HKD
Retailer 20HK$7,267 HKD
Retailer 23HK$8,677 HKD
Retailer 3HK$10,858 HKD
Retailer 15HK$11,294 HKD
Retailer 5HK$11,597 HKD
Retailer 16HK$12,047 HKD
Retailer 2HK$12,495 HKD
Retailer 8HK$12,958 HKD
Retailer 22HK$19,261 HKD
Retailer 4HK$20,242 HKD
Brilliant EarthHK$25,577 HKD

36 data points across 24 retailers

33 retailersHK$2,275 HKD to HK$20,618 HKD

A
Cheapest Retailer
-
HK$2,275 HKD
$290 USD
Retailer 2
-
HK$2,275 HKD
$290 USD
View
Price last confirmed 24 days ago
Retailer 3
-
HK$2,424 HKD
$309 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
HK$2,722 HKD
$347 USD
View
Final sale: no returns
Retailer 5
-
HK$2,809 HKD
$358 USD
View
Price last confirmed 35 days ago
Retailer 6
-
HK$2,824 HKD
$360 USD
View
Price last confirmed 29 days ago
Retailer 7
-
HK$2,966 HKD
$378 USD
View
Price last confirmed 34 days ago
A
Retailer 8
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HK$3,297 HKD
£331 GBP
View
A
Retailer 9
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HK$4,001 HKD
$510 USD
View
A
Retailer 10
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HK$4,117 HKD
View
A
Retailer 11
-
HK$4,394 HKD
$560 USD
View
A
Retailer 12
-
HK$4,864 HKD
$620 USD
View
A
Retailer 13
-
HK$5,066 HKD
€615 EUR
View
A
Retailer 14
-
HK$5,358 HKD
ZAR 11,032 ZAR
View
Retailer 15
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HK$5,501 HKD
£552 GBP
View
Price last confirmed 17 days ago
A
Retailer 16
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HK$5,566 HKD
£559 GBP
View
A
Retailer 17
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HK$6,182 HKD
$788 USD
View
A
Retailer 18
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HK$7,037 HKD
$897 USD
View
A
Retailer 19
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HK$7,267 HKD
A$1,425 AUD
View
B+
Retailer 20
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HK$8,677 HKD
$1,106 USD
View
Retailer 21
-
HK$10,019 HKD
$1,277 USD
View
Price last confirmed 22 days ago
B+
Retailer 22
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HK$10,019 HKD
$1,277 USD
View
Retailer 23
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HK$10,654 HKD
$1,358 USD
View
Price last confirmed 32 days ago
B+
Retailer 24
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HK$10,858 HKD
$1,384 USD
View
B+
Retailer 25
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HK$11,294 HKD
$1,440 USD
View
B+
Retailer 26
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HK$11,597 HKD
$1,478 USD
View
B+
Retailer 27
-
HK$12,047 HKD
SGD 2,075 SGD
View
B+
Retailer 28
-
HK$12,495 HKD
£1,254 GBP
View
Retailer 29
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HK$12,958 HKD
A$2,541 AUD
View
Price last confirmed 27 days ago
B
Retailer 30
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HK$19,261 HKD
$2,455 USD
View
B
Retailer 31
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HK$20,242 HKD
$2,580 USD
View
B
Retailer 32
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HK$20,618 HKD
$2,628 USD
View
Most Expensive
Brilliant Earth
18652671Y · Oct 6
HK$25,577 HKD
$3,260 USD
View
Price last confirmed 26 days ago
32 more retailers have this diamond
Prices start from HK$2,275 HKDSave up to HK$18,343 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
1.51ct Radiant
HK$2,275 HKD