CaratHunter
Plans
Cushion|Natural|GIA

1.05ct L SI1 Cushion Natural Diamond

EX • L/SI1 • GIA 2178228123

Certificate GIA 2178228123

Diamond specifications and retailer prices

From HK$15,455 HKD
As of November 4, 2026
Save HK$7,593 HKD (33%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$23,049 HKD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2178228123. Listed at 9 retailers as of November 4, 2026, with prices from HK$15,455 to HK$23,049, a HK$7,593 spread on the same certified stone. Cape Diamonds lists it at HK$23,049. 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

1.05
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2178228123
Dimensions6.55 × 5.49 × 3.73 mm
L/W Ratio1.19
Culet sizeNone
Top View
6.55 mm5.49 mm1.05 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2178228123
Side View
Table 65.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 67.9%

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 4
Current: HK$23,049 HKD|Low: HK$15,165 HKD|High: HK$23,210 HKD|Avg: HK$19,572 HKD|+2.7%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4HK$15,165 HKD
Retailer 5HK$17,109 HKD
Retailer 6HK$19,539 HKD
Retailer 3HK$19,978 HKD
Retailer 2HK$22,031 HKD
Cape DiamondsHK$23,049 HKD

45 data points across 6 retailers

9 retailersHK$15,455 HKD to HK$23,049 HKD

Retailer 1
-
HK$15,165 HKD
Price last confirmed 12 days ago
B
Retailer 2
-
HK$15,455 HKD
View
Retailer 3
-
HK$17,109 HKD
View
Price last confirmed 8 days ago
B
Retailer 4
-
HK$17,242 HKD
View
B
Retailer 5
-
HK$18,512 HKD
View
B
Retailer 6
-
HK$19,539 HKD
View
B
Retailer 7
-
HK$19,978 HKD
View
B
Retailer 8
-
HK$22,031 HKD
View
Most Expensive
B
Cape Diamonds
cert_2178228123 · Nov 5
HK$23,049 HKD
ZAR 47,510 ZAR
View
8 more retailers have this diamond
Prices start from HK$15,455 HKDSave up to HK$7,593 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$15,455 HKD