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Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG700570324

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG700570324

Diamond specifications and retailer prices

From HK$1,599 HKD
As of November 6, 2026
Save HK$8,120 HKD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$9,718 HKD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart 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 LG700570324 or 700570324. Listed at 15 retailers as of November 6, 2026, with prices from HK$1,599 to HK$9,718, a HK$8,120 spread on the same certified stone. Brilliant Earth lists it at HK$9,718. 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 angle36.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700570324
Dimensions7.24 × 7.66 × 4.65 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.24 mm7.66 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700570324
Side View
Table 58.0%Crown 36.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 60.7%

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: Nov 6
Current: HK$9,718 HKD|Low: HK$1,599 HKD|High: HK$9,718 HKD|Avg: HK$4,188 HKD
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 6, 2026
Retailer 14HK$1,599 HKD
Retailer 11HK$1,850 HKD
Retailer 7HK$1,865 HKD
Retailer 4HK$1,975 HKD
Retailer 6HK$2,069 HKD
Retailer 15HK$2,665 HKD
Retailer 2HK$3,331 HKD
Retailer 8HK$3,597 HKD
Retailer 3HK$3,872 HKD
Retailer 12HK$4,420 HKD
Retailer 13HK$4,569 HKD
Retailer 10HK$5,173 HKD
Retailer 5HK$6,356 HKD
Retailer 9HK$9,225 HKD
Brilliant EarthHK$9,718 HKD

46 data points across 15 retailers

15 retailersHK$1,599 HKD to HK$9,718 HKD

A
Cheapest Retailer
-
HK$1,599 HKD
A
Retailer 2
-
HK$1,850 HKD
View
A
Retailer 3
-
HK$1,865 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$1,975 HKD
View
Retailer 5
-
HK$2,069 HKD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
HK$2,665 HKD
View
A
Retailer 7
-
HK$3,331 HKD
View
A
Retailer 8
-
HK$3,597 HKD
View
B+
Retailer 9
-
HK$3,872 HKD
View
B+
Retailer 10
-
HK$4,420 HKD
View
B+
Retailer 11
-
HK$4,569 HKD
View
B+
Retailer 12
-
HK$5,173 HKD
View
B
Retailer 13
-
HK$6,356 HKD
View
B
Retailer 14
-
HK$9,225 HKD
View
Most Expensive
B
Brilliant Earth
13883714A · Nov 6
HK$9,718 HKD
$1,240 USD
View
14 more retailers have this diamond
Prices start from HK$1,599 HKDSave up to HK$8,120 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 Heart
HK$1,599 HKD