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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG819628770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819628770

Diamond specifications and retailer prices

From HK$1,922 HKD
As of October 30, 2026
Save HK$6,786 HKD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$9,639 HKD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 LG819628770 or 819628770. Listed at 17 retailers as of October 30, 2026, with a 353% 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819628770
Dimensions7.35 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.35 mm7.31 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819628770
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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 30
Current: HK$3,381 HKD|Low: HK$1,530 HKD|High: HK$9,639 HKD|Avg: HK$4,279 HKD|+4.6%
Retailer 1
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
Reve Diamonds
October 31, 2026
Retailer 7HK$1,600 HKD
Retailer 15HK$1,922 HKD
Retailer 9HK$1,977 HKD
Retailer 17HK$2,165 HKD
Retailer 3HK$3,201 HKD
Retailer 1HK$3,381 HKD
Retailer 13HK$3,475 HKD
Retailer 2HK$3,538 HKD
Retailer 10HK$3,781 HKD
Retailer 8HK$4,221 HKD
Retailer 14HK$4,644 HKD
Retailer 12HK$5,421 HKD
Retailer 6HK$5,962 HKD
Retailer 11HK$6,598 HKD
Retailer 4HK$7,014 HKD
Retailer 16HK$8,708 HKD
Retailer 5HK$9,304 HKD
Reve DiamondsHK$9,639 HKD

32 data points across 18 retailers

17 retailersHK$1,922 HKD to HK$8,708 HKD

Retailer 1
-
HK$1,600 HKD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$1,922 HKD
View
Retailer 3
-
HK$1,977 HKD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$3,201 HKD
View
Price last confirmed 7 days ago
A
Retailer 5
-
HK$3,381 HKD
View
A
Retailer 6
-
HK$3,475 HKD
View
B+
Retailer 7
-
HK$3,538 HKD
View
Price last confirmed 7 days ago
A
Retailer 8
-
HK$3,781 HKD
View
B+
Retailer 9
-
HK$4,221 HKD
View
B+
Retailer 10
-
HK$4,644 HKD
View
B+
Retailer 11
-
HK$5,421 HKD
View
Retailer 12
-
HK$5,962 HKD
View
Price last confirmed 12 days ago
B
Retailer 13
-
HK$6,598 HKD
View
B
Retailer 14
-
HK$7,014 HKD
View
B
Retailer 15
-
HK$8,708 HKD
View
Retailer 16
-
HK$9,304 HKD
View
Price last confirmed 8 days ago
Most Expensive
Reve Diamonds
563078C55 · Oct 30
HK$9,639 HKD
$1,229 USD
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from HK$1,922 HKDSave up to HK$6,786 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$1,922 HKD