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Cushion|Lab Grown|GIA

1.05ct D SI1 Cushion Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From HK$8,551 HKD
As of November 5, 2026
Save HK$2,767 HKD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$11,317 HKD at Washington Diamond · As of November 6, 2026
View at Washington Diamond

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by GIA. Listed at 2 retailers as of November 5, 2026, with prices from HK$8,551 to HK$11,317, a HK$2,767 spread on the same certified stone. Washington Diamond lists it at HK$11,317. 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

1.05
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions6.06 × 5.94 × 4.02 mm
L/W Ratio1.02
Top View
6.06 mm5.94 mm1.05 ctD / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: MED-ETKPavilionCuletDepth 67.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$8,551 HKD|Low: HK$1,520 HKD|High: HK$11,317 HKD|Avg: HK$3,829 HKD|-12.7%
Retailer 1
Retailer 2
Retailer 3
Washington Diamond
November 6, 2026
Retailer 3HK$1,520 HKD
Retailer 2HK$2,861 HKD
Retailer 1HK$8,551 HKD
Washington DiamondHK$11,317 HKD

18 data points across 4 retailers

2 retailersHK$8,551 HKD to HK$11,317 HKD

B
Cheapest Retailer
-
HK$8,551 HKD
Most Expensive
C
Washington Diamond
1949230369 · Nov 6
HK$11,317 HKD
$1,444 USD
View
1 more retailer has this diamond
Prices start from HK$8,551 HKDSave up to HK$2,767 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.

B
1.05ct Cushion
HK$8,551 HKD