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Round|Lab Grown|IGI

4.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754594164

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754594164

Diamond specifications and retailer prices

From HK$21,254 HKD
$2,709 USD
As of October 29, 2026
Save HK$124,990 HKD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$146,244 HKD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.51ct lab-grown round diamond

This 4.51ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754594164 or 754594164. Listed at 16 retailers as of October 29, 2026, with prices from HK$21,254 to HK$146,244, a HK$124,990 spread on the same certified stone. Do Amore Diamonds lists it at HK$146,244. 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

4.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594164
Dimensions10.70 × 10.74 × 6.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.70 mm10.74 mm4.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594164
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.2%

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 29
Current: HK$146,244 HKD|Low: HK$20,940 HKD|High: HK$216,855 HKD|Avg: HK$57,739 HKD|-2.6%
Do Amore Diamonds
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
October 31, 2026
Retailer 14HK$21,254 HKD
Retailer 3HK$23,129 HKD
Retailer 8HK$24,432 HKD
Retailer 15HK$24,502 HKD
Retailer 17HK$34,011 HKD
Retailer 12HK$34,207 HKD
Retailer 7HK$34,474 HKD
Retailer 16HK$36,184 HKD
Retailer 13HK$38,373 HKD
Retailer 2HK$44,320 HKD
Retailer 9HK$46,958 HKD
Retailer 4HK$56,373 HKD
Retailer 5HK$59,967 HKD
Retailer 11HK$69,360 HKD
Retailer 6HK$95,589 HKD
Retailer 10HK$111,566 HKD
Do Amore DiamondsHK$146,244 HKD

35 data points across 17 retailers

16 retailersHK$21,254 HKD to HK$146,244 HKD

A
Cheapest Retailer
-
HK$21,254 HKD
$2,709 USD
A
Retailer 2
-
HK$23,129 HKD
$2,948 USD
View
A
Retailer 3
-
HK$24,432 HKD
$3,114 USD
View
Final sale: no returns
A
Retailer 4
-
HK$24,502 HKD
$3,123 USD
View
A
Retailer 5
-
HK$34,011 HKD
$4,335 USD
View
A
Retailer 6
-
HK$34,207 HKD
$4,360 USD
View
A
Retailer 7
-
HK$34,474 HKD
$4,394 USD
View
A
Retailer 8
-
HK$36,184 HKD
$4,612 USD
View
A
Retailer 9
-
HK$38,373 HKD
$4,891 USD
View
A
Retailer 10
-
HK$44,320 HKD
€5,380 EUR
View
B+
Retailer 11
-
HK$56,373 HKD
$7,185 USD
View
Retailer 12
-
HK$59,967 HKD
A$11,759 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
HK$69,360 HKD
£6,961 GBP
View
Retailer 14
-
HK$95,589 HKD
A$18,744 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
HK$111,566 HKD
$14,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-EDBE1E8E5 · Oct 30
HK$146,244 HKD
$18,640 USD
View
15 more retailers have this diamond
Prices start from HK$21,254 HKDSave up to HK$124,990 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
4.51ct Round
HK$21,254 HKD