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1.55ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG784643985

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784643985

Diamond specifications and retailer prices

From HK$1,600 HKD
As of November 1, 2026
Save HK$8,755 HKD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$10,356 HKD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct 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 very-good cut grade and certified by IGI LG784643985 or 784643985. Listed at 14 retailers as of November 1, 2026, with prices from HK$1,600 to HK$10,356, a HK$8,755 spread on the same certified stone. Brilliant Earth lists it at HK$10,356. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784643985
Dimensions7.41 × 7.32 × 4.55 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
7.41 mm7.32 mm1.55 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG784643985
Side View
Table 59.0%Crown 37°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 61.6%

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 1
Current: HK$10,356 HKD|Low: HK$1,004 HKD|High: HK$13,180 HKD|Avg: HK$4,894 HKD|-21.4%
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 7HK$1,004 HKD
Retailer 12HK$1,600 HKD
Retailer 13HK$1,789 HKD
Retailer 3HK$1,977 HKD
Retailer 2HK$3,342 HKD
Retailer 15HK$3,428 HKD
Retailer 11HK$3,593 HKD
Retailer 4HK$3,609 HKD
Retailer 14HK$4,001 HKD
Retailer 10HK$5,311 HKD
Retailer 8HK$5,805 HKD
Retailer 6HK$6,778 HKD
Retailer 9HK$9,249 HKD
Retailer 5HK$9,446 HKD
Brilliant EarthHK$10,356 HKD

36 data points across 15 retailers

14 retailersHK$1,600 HKD to HK$10,356 HKD

A
Cheapest Retailer
-
HK$1,600 HKD
A
Retailer 2
-
HK$1,789 HKD
View
Final sale: no returns
Retailer 3
-
HK$1,953 HKD
View
Price last confirmed 52 days ago
Retailer 4
-
HK$1,977 HKD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$3,342 HKD
View
B+
Retailer 6
-
HK$3,428 HKD
View
B+
Retailer 7
-
HK$3,593 HKD
View
B+
Retailer 8
-
HK$3,609 HKD
View
B+
Retailer 9
-
HK$4,001 HKD
View
B+
Retailer 10
-
HK$5,311 HKD
View
B
Retailer 11
-
HK$5,805 HKD
View
B
Retailer 12
-
HK$6,778 HKD
View
B
Retailer 13
-
HK$9,249 HKD
View
Most Expensive
B
Brilliant Earth
20185628A · Nov 3
HK$10,356 HKD
$1,320 USD
View
13 more retailers have this diamond
Prices start from HK$1,600 HKDSave up to HK$8,755 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
1.55ct Round
HK$1,600 HKD