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1.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG770669393

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770669393

Diamond specifications and retailer prices

From HK$1,749 HKD
As of November 5, 2026
Save HK$7,822 HKD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$9,571 HKD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770669393 or 770669393. Listed at 15 retailers as of November 5, 2026, with prices from HK$1,749 to HK$9,571, a HK$7,822 spread on the same certified stone. Brilliant Earth lists it at HK$9,571. 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

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770669393
Dimensions7.35 × 7.30 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.35 mm7.30 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770669393
Side View
Table 60.0%Crown 34.8°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
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: Nov 5
Current: HK$9,571 HKD|Low: HK$1,679 HKD|High: HK$9,571 HKD|Avg: HK$4,853 HKD|+0.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9HK$1,749 HKD
Retailer 10HK$2,165 HKD
Retailer 8HK$2,903 HKD
Retailer 3HK$3,350 HKD
Retailer 2HK$3,632 HKD
Retailer 4HK$3,978 HKD
Retailer 5HK$5,923 HKD
Retailer 6HK$6,002 HKD
Retailer 7HK$8,685 HKD
Brilliant EarthHK$9,571 HKD

43 data points across 10 retailers

15 retailersHK$1,749 HKD to HK$9,571 HKD

A
Cheapest Retailer
-
HK$1,749 HKD
A
Retailer 2
-
HK$2,024 HKD
View
Retailer 3
-
HK$2,165 HKD
View
Price last confirmed 12 days ago
A
Retailer 4
-
HK$2,165 HKD
View
B+
Retailer 5
-
HK$2,903 HKD
View
A
Retailer 6
-
HK$3,350 HKD
View
A
Retailer 7
-
HK$3,507 HKD
View
A
Retailer 8
-
HK$3,632 HKD
View
A
Retailer 9
-
HK$3,978 HKD
View
B+
Retailer 10
-
HK$4,739 HKD
View
B
Retailer 11
-
HK$5,923 HKD
View
B+
Retailer 12
-
HK$6,002 HKD
View
B
Retailer 13
-
HK$6,959 HKD
View
Retailer 14
-
HK$8,685 HKD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20482981A · Nov 5
HK$9,571 HKD
$1,220 USD
View
14 more retailers have this diamond
Prices start from HK$1,749 HKDSave up to HK$7,822 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 Round
HK$1,749 HKD