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1.25ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG517289198

Shape and cutting style on the report: Round brilliant

Certificate IGI LG517289198

Diamond specifications and retailer prices

From HK$1,334 HKD
As of November 5, 2026
Save HK$6,378 HKD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$7,712 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517289198 or 517289198. Listed at 17 retailers as of November 2, 2026, with prices from HK$1,334 to HK$7,712, a HK$6,378 spread on the same certified stone. MOH London lists it at HK$7,712. 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

1.25
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517289198
Dimensions6.89 × 6.85 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.89 mm6.85 mm1.25 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517289198
Side View
Table 55.0%Crown 35.5°Girdle: MediumPavilion 40.4°Culet: NoneDepth 62.1%

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$7,712 HKD|Low: HK$1,279 HKD|High: HK$7,801 HKD|Avg: HK$3,522 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7HK$1,334 HKD
Retailer 10HK$1,491 HKD
Retailer 8HK$1,647 HKD
Retailer 4HK$2,840 HKD
Retailer 3HK$2,903 HKD
Retailer 2HK$3,240 HKD
Retailer 9HK$3,617 HKD
Retailer 5HK$5,421 HKD
Retailer 6HK$5,601 HKD
MOH LondonHK$7,712 HKD

44 data points across 10 retailers

17 retailersHK$1,334 HKD to HK$7,712 HKD

A
Cheapest Retailer
-
HK$1,334 HKD
A
Retailer 2
-
HK$1,491 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,546 HKD
View
Retailer 4
-
HK$1,647 HKD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$1,647 HKD
View
A
Retailer 6
-
HK$1,906 HKD
View
B+
Retailer 7
-
HK$2,259 HKD
View
A
Retailer 8
-
HK$2,840 HKD
View
A
Retailer 9
-
HK$2,903 HKD
View
A
Retailer 10
-
HK$3,130 HKD
View
A
Retailer 11
-
HK$3,240 HKD
View
B+
Retailer 12
-
HK$3,617 HKD
View
Retailer 13
-
HK$3,962 HKD
View
Price last confirmed 58 days ago
B
Retailer 14
-
HK$5,303 HKD
View
B
Retailer 15
-
HK$5,421 HKD
View
B
Retailer 16
-
HK$5,601 HKD
View
Most Expensive
B
MOH London
LG517289198 · Nov 2
HK$7,712 HKD
£774 GBP
View
16 more retailers have this diamond
Prices start from HK$1,334 HKDSave up to HK$6,378 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
1.25ct Round
HK$1,334 HKD